Slag protection device for metal pipeline welding

Abstract

The invention discloses a metal pipeline welding slag protection device which comprises a shell, a slag blocking mechanism is fixedly connected to the bottom of the inner wall of the shell, a fixing mechanism is fixedly connected to the bottom of the inner wall of the shell, an annular baffle is fixedly connected to the top of the inner wall of the shell, and an elastic falling mechanism is fixedly connected to the bottom of the annular baffle. And one side of the inner wall of the shell communicates with a discharging pipe, the side, away from the shell, of the discharging pipe communicates with a collecting box, the bottom of the shell is fixedly connected with supporting legs, and the bottom of the inner wall of the shell is fixedly connected with the bottom of an elastic falling mechanism. The pulleys make contact with the inner wall of the metal pipeline to roll, friction force is reduced, the metal pipeline moves in the shell more smoothly, inner wall abrasion is reduced, the surface quality is kept, and when the hole diameter of the metal pipeline is small, the pulleys drive the telescopic blocks to extrude the contraction springs, so that the telescopic blocks slide in the rectangular sleeve blocks to adapt to different hole diameters.

Description

Technical Field

[0001] The present invention relates to the technical field of slag protection, and particularly relates to a slag protection device for metal pipe welding. Background Art

[0002] A metal pipe is a tubular structure made of metal materials, used for transporting various fluids, powdered solids or as a cable protection sleeve, etc. It has various excellent properties. Metal pipe welding is a key process for connecting two or more sections of metal pipes into a continuous whole. It forms atomic bonding at the joints of metal pipes by heating, pressurizing or both, with or without using filler materials, so as to form a firm and well-sealed connection. If the slag generated during welding remains in the weld seam, slag inclusions will be formed. The slag inclusions will reduce the effective cross-sectional area of the weld seam and decrease the load-bearing capacity of the weld seam. The slag generated during the welding process has a very high temperature and will splash onto the surrounding pipe surface. The high-temperature slag may scald the pipe surface, affecting the performance and appearance of the pipe. Moreover, the high-temperature slag may also damage the anti-corrosion coating, insulation layer and other accessory structures outside the pipe, accelerating the corrosion process of the pipe and shortening the service life of the pipe. During metal pipe welding, slag protection is a necessary measure to ensure welding quality, pipe performance and operation safety; During metal pipe welding, slag easily enters the inner wall of the pipe and causes damage to the pipe. The slag is not easy to handle after cooling and solidifying. Therefore, we propose a slag protection device for metal pipe welding. Summary of the Invention

[0003] To solve the above technical problems, the present invention provides a slag protection device for metal pipe welding, including a housing. At the bottom of the inner wall of the housing, a slag blocking mechanism is fixedly connected. At the bottom of the inner wall of the housing, a fixing mechanism is fixedly connected. At the top of the inner wall of the housing, an annular baffle is fixedly connected. At the bottom of the annular baffle, a slag dropping mechanism is fixedly connected. On one side of the inner wall of the housing, a discharge pipe is communicated. On the side of the discharge pipe away from the housing, a collection box is communicated. At the bottom of the housing, support feet are fixedly connected. The bottom of the inner wall of the housing is fixedly connected to the bottom of the slag dropping mechanism; The slag blocking mechanism includes a rectangular column. One side of the rectangular column is fixedly connected with a rectangular sleeve block. One side of the rectangular column close to the rectangular sleeve block is fixedly connected with a contraction spring. When the aperture of the metal pipe is small, the pulley drives the telescopic block to squeeze the contraction spring, so that the telescopic block slides in the rectangular sleeve block to adapt to different apertures. The end of the contraction spring away from the rectangular column is fixedly connected with a telescopic block. One side of the telescopic block is rotatably connected with a pulley through a rotating bolt. The pulley contacts and rolls on the inner wall of the metal pipe, reducing the friction force, making the metal pipe move more smoothly in the shell, reducing the wear of the inner wall, maintaining the surface quality. One side of the rectangular column is provided with a rectangular groove. The bottom of the inner wall of the rectangular groove is fixedly connected with an electric push rod I. The movable end of the electric push rod I is fixedly connected with a slider. One side of the slider is rotatably connected with a rotating rod through a rotating bolt. The end of the rotating rod away from the slider is rotatably connected with a rotating block through a rotating bolt. One end of the rotating block close to the rotating rod is provided with a chute. One side of the inner wall of the chute is fixedly connected with a compression spring. The compression spring provides a buffering force to prevent the silica gel cloth and the rubber ring from cracking or losing elasticity due to excessive extrusion. By stretching, it ensures that the silica gel cloth and the rubber ring always closely fit the inner wall of the pipe with different apertures, ensuring good sealing and protection effects, and continuously and effectively preventing slag from entering the pipe. The end of the compression spring away from the chute is fixedly connected with a rubber ring. The top of the rectangular column is fixedly connected with a cylinder. One side of the cylinder is provided with a plurality of grooves, and the plurality of grooves are distributed on the cylinder. The end of the compression spring away from the chute is fixedly connected with a rubber ring. The top of the rubber ring is fixedly connected with a silica gel cloth. When the electric push rod I is started, the rotating block is rotated through transmission to support the silica gel cloth and the rubber ring to form a plane, closing the inner wall of the pipe orifice at the welding joint of the metal pipe to prevent slag from entering. The rubber ring can enhance the slag blocking effect due to its large surface roughness. The silica gel cloth is soft and elastic, can withstand a certain high temperature, resist slag erosion, and has a good protection effect on the pipe. When the aperture changes, the silica gel cloth can shrink and fit the inner wall to maintain the seal. The bottom of the rectangular column is fixedly connected with the bottom of the inner wall of the shell. The top of the rotating block is fixedly connected with the bottom of the silica gel cloth. The inner wall of the groove is rotatably connected with the end of the rotating block away from the rotating rod through a rotating bolt.

[0004] Furthermore, the fixing mechanism includes an annular cylinder. On both sides of the inner wall of the annular cylinder, there are fixedly connected second electric push rods. The movable ends of the second electric push rods are fixedly connected with arc-shaped plates. When the second electric push rods are activated, they can drive the arc-shaped plates to move, thereby firmly fixing and clamping the metal pipe, effectively preventing the metal pipe from shifting. The top of the annular cylinder is fixedly connected with a contraction component, and one side of the annular cylinder is fixedly connected with a collection component. The bottom of the annular cylinder is fixedly connected with the bottom of the inner wall of the housing. The collection component is slidably connected with the inner wall of the housing. The contraction component includes a ceramic fiber board. The ceramic fiber board has a low thermal conductivity and good heat insulation performance. It can not only withstand high temperatures and effectively block molten slag to protect the metal pipe and surrounding components, but also closely fit the surfaces of pipes with different shapes due to its soft texture, playing a role in protection and molten slag diversion. The top of the ceramic fiber board is fixedly connected with a hollow plastic shell. When the motor drives the rotating rod to rotate, the contraction rope is wound, driving the hollow plastic shell to contract and fit the outside of the metal pipe, realizing the wrapping of metal pipes with different diameters. The ceramic fiber board in the hollow plastic shell then contracts inward to form an inclined plane, which can guide the molten slag to fall to the bottom along the inclined plane. An arc-shaped hole is opened at the bottom of the hollow plastic shell. The bottom of the hollow plastic shell is fixedly connected with a tightening ring through a connecting rod. The inner wall of the tightening ring is provided with a contraction rope. Both ends of the contraction rope penetrate and are fixedly connected with concave fixing blocks. The upper and lower sides of the inner wall of the concave fixing blocks are rotatably connected with a rotating rod through a rotating bolt. The bottom of the rotating rod is fixedly connected with a motor. One side of the concave fixing block away from the rotating rod is fixedly connected with a rectangular block. The bottom of the hollow plastic shell is fixedly connected with a connecting spring. The bottom of the ceramic fiber board is fixedly connected with the top of the annular cylinder. The top of the motor is fixedly connected with the bottom of the concave fixing block. The collection component includes an annular electric slide rail. The bottom of the annular electric slide rail is fixedly connected with a round rod. The bottom of the round rod is fixedly connected with a scraper. After the annular electric slide rail is activated, it drives the scraper to slide annularly with the help of the round rod. The inclined plane of the scraper is designed to fit the shape of the bottom of the inner wall of the housing, which can scrape away the molten slag accumulated at the bottom and make the molten slag fall into the collection box through the discharge pipe for collection and treatment. The top of the annular electric slide rail is fixedly connected with an inclined baffle. The inner wall of the annular electric slide rail is fixedly connected with one side of the annular cylinder. One side of the inclined baffle away from the annular electric slide rail is fixedly connected with one side of the annular cylinder close to the annular electric slide rail.

[0005] Furthermore, the slag dropping mechanism includes a corrugated protective cover. The corrugated protective cover uses this elasticity to drop the slag to the bottom of the housing, playing a role in initially blocking and removing the slag, and preventing the slag from splashing everywhere and affecting other components. A first corrugated sheet is arranged on the outer side of the corrugated protective cover. A spring is fixedly connected to the side of the first corrugated sheet away from the corrugated protective cover. The spring connects the first corrugated plate and the second corrugated plate, which can ensure that the deformation of the first corrugated sheet can effectively drive the second corrugated plate to deform synchronously, and coordinate the amount and rhythm of deformation between the two, so that the force acting on the corrugated protective cover is more uniform and can more effectively prompt it to generate appropriate deformation to remove the slag. The end of the spring away from the first corrugated sheet is fixedly connected to a second corrugated sheet. A rope buckle is fixedly connected to the side of the second corrugated sheet away from the spring. An electric telescopic rod is fixedly connected to the side of the second corrugated sheet away from the spring. A sleeve block is sleeved and fixedly connected to the movable end of the electric telescopic rod. A rope is fixedly connected to one side of the sleeve block. Under the push of the electric telescopic rod, the middle part of the first corrugated sheet first elastically deforms inward. The rope cooperates with the rope buckle, and under the action of the electric telescopic rod, the two ends of the first corrugated sheet deform, assisting the deformation of the corrugated protective cover. The second corrugated plate is connected to the first corrugated sheet through a spring, and the former deforms following the deformation of the latter and acts on the corrugated protective cover to detach and drop the slag solidified on its surface. The bottom of the corrugated protective cover is fixedly connected to the inner bottom of the housing, and the top of the corrugated protective cover is fixedly connected to the bottom of the annular baffle. The end of the electric telescopic rod away from the second corrugated sheet is fixedly connected to one side of the inner wall of the housing. The side of the rope away from the sleeve block is fixedly connected to one side of the inner wall of the housing.

[0006] The beneficial effects of the present invention are as follows: 1. In the present invention, the pulley rolls in contact with the inner wall of the metal pipe, reducing the friction force, making the metal pipe move more smoothly in the housing, reducing the wear of the inner wall, and maintaining the surface quality. When the aperture of the metal pipe is small, the pulley drives the telescopic block to squeeze and compress the spring, so that the telescopic block slides in the rectangular sleeve block to adapt to different apertures. When the first electric push rod is started, the rotating block is driven to rotate through transmission, supporting the silica gel cloth and the rubber ring to form a plane, closing the inner wall of the welded joint of the metal pipe to prevent slag from entering. When the second electric push rod is started, it can drive the arc plate to move, thereby firmly fixing and clamping the metal pipe, effectively preventing the metal pipe from shifting. The motor drives the rotating rod to rotate, causing the contraction rope to wind, driving the hollow plastic shell to contract and fit the outer side of the metal pipe, realizing the wrapping of metal pipes with different diameters. The corrugated protective cover uses this elasticity to drop the slag to the bottom of the housing, playing a role in initially blocking and removing the slag, and preventing the slag from splashing everywhere and affecting other components.

[0007] 2. The present invention reduces the friction by arranging a slag blocking mechanism, where the pulley rolls in contact with the inner wall of the metal pipe, making the movement of the metal pipe in the shell smoother, reducing the wear of the inner wall, maintaining the surface quality. When the aperture of the metal pipe is small, the pulley drives the telescopic block to squeeze the compression spring, causing the telescopic block to slide within the rectangular sleeve block to adapt to different apertures. When the electric push rod 1 starts, it drives the rotating block to rotate through transmission, propping up the silica gel cloth and the rubber ring to form a flat surface, closing the inner wall of the welded joint of the metal pipe to prevent slag from entering. The rubber ring can enhance the slag blocking effect due to its large surface roughness. The silica gel cloth is soft and elastic, can withstand a certain high temperature, resist slag erosion, and has a good protective effect on the pipe. When the aperture changes, the silica gel cloth can shrink and fit the inner wall to maintain the seal. The compression spring provides a buffering force to prevent the silica gel cloth and the rubber ring from cracking or losing elasticity due to excessive extrusion. By stretching and contracting, it ensures that the silica gel cloth and the rubber ring always closely fit the inner wall of the pipe with different apertures, ensuring good sealing and protective effects, and continuously and effectively preventing slag from entering the pipe.

[0008] 3. The present invention arranges a fixing mechanism. When the electric push rod 2 starts, it can drive the arc-shaped plate to move, thereby firmly fixing and clamping the metal pipe, effectively preventing the metal pipe from shifting. The motor drives the rotating rod to rotate, causing the contraction rope to wind, driving the hollow plastic shell to contract and fit the outer side of the metal pipe, achieving the wrapping of metal pipes with different diameters. The ceramic fiber board in the hollow plastic shell shrinks inward to form an inclined plane. On the one hand, it can guide the slag to fall to the bottom along the inclined plane. On the other hand, the ceramic fiber board has a low thermal conductivity and good heat insulation performance. It can not only withstand high temperatures and effectively block slag to protect the metal pipe and surrounding components, but also closely fit the surface of pipes with different shapes due to its soft texture, playing a role in protection and slag diversion. After the annular electric slide rail starts, with the help of the round rod, the scraper slides annularly. The inclined plane of the scraper is designed to fit the shape of the bottom of the inner wall of the shell, which can scrape away the slag accumulated at the bottom and make the slag fall into the collection box through the discharge pipe for collection and treatment.

[0009] 4. The present invention arranges an elastic dropping mechanism. The corrugated protective cover uses this elasticity to bounce the slag to the bottom of the shell, playing a role in initially blocking and removing the slag, avoiding the slag splashing everywhere and affecting other components. Under the push of the electric telescopic rod, the middle part of the corrugated sheet 1 first undergoes elastic deformation inward. The rope and the rope buckle cooperate, and under the action of the electric telescopic rod, the two ends of the corrugated sheet 1 deform, assisting the deformation of the corrugated protective cover. The corrugated plate 2 is connected to the corrugated sheet 1 by a spring. The former deforms following the deformation of the latter and acts on the corrugated protective cover to detach and bounce off the slag solidified on its surface. The spring connects the corrugated sheet 1 and the corrugated plate 2, which can ensure that the deformation of the corrugated sheet 1 can effectively drive the corrugated plate 2 to deform synchronously, and coordinate the amount and rhythm of deformation between the two, making the force acting on the corrugated protective cover more uniform and more effectively promoting it to produce appropriate deformation to remove the slag. Description of the Drawings

[0010] Figure 1 Structural schematic diagram of the slag protection device for metal pipe welding of the present invention; Figure 2 Cross-sectional structural schematic diagram of the slag protection device for metal pipe welding of the present invention; Figure 3 Structural schematic diagram of the slag blocking mechanism of the present invention; Figure 4 Enlarged structural schematic diagram at position A of the slag blocking mechanism of the present invention; Figure 5 Partial structural schematic diagram of the slag blocking mechanism of the present invention; Figure 6 Structural schematic diagram of the fixing mechanism of the present invention; Figure 7 Cross-sectional structural schematic diagram of the fixing mechanism of the present invention; Figure 8 Structural schematic diagram of the contraction assembly of the present invention; Figure 9 Structural schematic diagram of the collection assembly of the present invention; Figure 10 Structural schematic diagram of the ejection mechanism of the present invention; Figure 11 Partial structural schematic diagram of the ejection mechanism of the present invention; In the figure: 1, housing; 2, slag blocking mechanism; 3, fixing mechanism; 4, annular baffle; 5, ejection mechanism; 6, discharge pipe; 7, collection box; 8, support feet; 21, rectangular column; 22, rectangular sleeve block; 23, contraction spring; 24, telescopic block; 25, pulley; 26, rectangular groove; 27, electric push rod 1; 28, slider; 29, rotating rod; 210, rotating block; 211, chute; 212, compression spring; 213, cylinder; 214, groove; 215, rubber ring; 216, silica gel cloth; 31, annular cylinder; 32, electric push rod 2; 33, arc-shaped plate; 34, contraction assembly; 35, collection assembly; 341, ceramic fiber board; 342, hollow plastic shell; 343, arc-shaped hole; 344, tightening ring; 345, contraction rope; 346, concave fixing block; 347, rotating rod; 348, motor; 349, rectangular block; 3410, connecting spring; 351, annular electric slide rail; 352, round rod; 353, scraper; 354, inclined baffle; 51, corrugated protective cover; 52, corrugated sheet 1; 53, spring; 54, corrugated sheet 2; 55, rope buckle; 56, electric telescopic rod; 57, sleeve block; 58, rope. Detailed implementation manners

[0011] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are given for purposes of illustration and description, and are not exhaustive or limit the present invention to the disclosed form. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and design various embodiments with various modifications suitable for specific purposes.

[0012] For the first embodiment, please refer to Figures 1 - 5 , the present invention is a slag protection device for metal pipe welding, including a housing 1. The bottom of the inner wall of the housing 1 is fixedly connected with a slag blocking mechanism 2. The bottom of the inner wall of the housing 1 is fixedly connected with a fixing mechanism 3. The top of the inner wall of the housing 1 is fixedly connected with an annular baffle 4. The bottom of the annular baffle 4 is fixedly connected with a slag dropping mechanism 5. One side of the inner wall of the housing 1 is communicated with a discharge pipe 6. The side of the discharge pipe 6 away from the housing 1 is communicated with a collection box 7. The bottom of the housing 1 is fixedly connected with support feet 8. The bottom of the inner wall of the housing 1 is fixedly connected with the bottom of the slag dropping mechanism 5; The slag blocking mechanism 2 includes a rectangular column 21. One side of the rectangular column 21 is fixedly connected with a rectangular sleeve block 22. One side of the rectangular column 21 close to the rectangular sleeve block 22 is fixedly connected with a contraction spring 23. One end of the contraction spring 23 away from the rectangular column 21 is fixedly connected with a telescopic block 24. One side of the telescopic block 24 is rotationally connected with a pulley 25 through a rotating bolt. One side of the rectangular column 21 is provided with a rectangular groove 26. The bottom of the inner wall of the rectangular groove 26 is fixedly connected with an electric push rod 27. The movable end of the electric push rod 27 is fixedly connected with a slider 28. One side of the slider 28 is rotationally connected with a rotating rod 29 through a rotating bolt. One end of the rotating rod 29 away from the slider 28 is rotationally connected with a rotating block 210 through a rotating bolt. One end of the rotating block 210 close to the rotating rod 29 is provided with a chute 211. One side of the inner wall of the chute 211 is fixedly connected with a compression spring 212. One end of the compression spring 212 away from the chute 211 is fixedly connected with a rubber ring 215. The top of the rectangular column 21 is fixedly connected with a cylinder 213. One side of the cylinder 213 is provided with a plurality of grooves 214, and the plurality of grooves 214 are distributed on the cylinder 213. One end of the compression spring 212 away from the chute 211 is fixedly connected with a rubber ring 215. The top of the rubber ring 215 is fixedly connected with a silica gel cloth 216. The bottom of the rectangular column 21 is fixedly connected with the bottom of the inner wall of the housing 1. The top of the rotating block 210 is fixedly connected with the bottom of the silica gel cloth 216. The inner wall of the groove 214 is rotationally connected with one end of the rotating block 210 away from the rotating rod 29 through a rotating bolt. When in use, the metal pipe is placed downward from the gap at the top of the slag blocking mechanism 2 and the fixing mechanism 3. During the placement process, the slag blocking mechanism 2 reduces the friction between it and the metal pipe, preventing damage to the inner wall of the metal pipe. After the metal pipe is placed at the bottom of the inner wall of the housing 1, the slag blocking mechanism 2 closes the pipe orifice at the top of the metal pipe, preventing slag from entering the pipe interior during welding. The fixing mechanism 3 is activated to fix the metal pipe. The top of the fixing mechanism 3 contracts to closely adhere to the outer side of the metal pipe. During welding, the slag rolls along the inclined plane to between the fixing mechanism 3 and the slag ejecting mechanism 5. When the slag contacts the slag ejecting mechanism 5, it will be bounced off and fall to the bottom of the housing 1. If the slag splashes, it will be blocked by the annular baffle 4, preventing the slag from splashing outside the housing 1. If the welding slag cools and solidifies on the surface of the slag ejecting mechanism 5, the slag ejecting mechanism 5 is activated and undergoes elastic deformation, causing the slag on the surface to break away and bounce off, falling to the bottom. The slag falling to the bottom is scraped off by the fixing mechanism 3 and enters the collection box 7 through the discharge pipe 6 for collection. When the metal pipe is placed in the housing 1, the metal pipe contacts the pulley 25, and the pulley 25 rolls, reducing the friction with the inner wall of the metal pipe, enabling the metal pipe to move more smoothly, and at the same time reducing the possible wear on the inner wall of the metal pipe, better protecting the surface quality of the inner wall of the pipe. If the aperture of the metal pipe is small, the pulley 25 is squeezed, driving the telescopic block 24 to be squeezed, and the contraction spring 23 begins to contract, causing the telescopic block 24 to slide inward in the inner wall of the rectangular sleeve block 22, which can better adapt to metal pipes with different apertures. After the metal pipe is placed at the bottom of the inner wall of the housing 1,The electric push rod 27 starts, drives the slider 28 to slide upward along the chute 211, drives the rotating rod 29 to rotate, makes the rotating block 210 rotate to support the silica gel cloth 216 and the rubber ring 215 to form a plane, closes the inner wall of the pipe orifice at the welding joint of the metal pipe, and prevents the slag from entering the inside of the pipe. Due to the relatively large surface roughness of the rubber ring 215 itself, it more effectively plays a role in blocking the slag. The silica gel cloth 216 is soft and elastic, can withstand a certain high temperature, can resist the erosion of the slag, and will not be damaged after contacting the slag. If the aperture of the metal pipe is small, the silica gel cloth 216 shrinks inward and closely fits the inner wall of the pipe. At the same time, the rubber ring 215 deforms and fits the inner wall to adapt to metal pipes with different apertures. At the same time, the compression spring 212 undergoes elastic deformation to provide a buffering force to prevent the silica gel cloth 216 and the rubber ring 215 from cracking or losing elasticity due to excessive extrusion force. At the same time, through the expansion and contraction of the compression spring, it always ensures that the silica gel cloth 216 and the rubber ring 215 can closely fit the inner wall of the pipe, ensuring that the device has good sealing and protection effects on metal pipes with different apertures and effectively preventing the slag from entering the pipe.,

[0013] For the second embodiment, please refer to Figures 1 - 11, the present invention provides a slag protection device for metal pipe welding: The fixing mechanism 3 includes an annular cylinder 31. Both sides of the inner wall of the annular cylinder 31 are fixedly connected with electric push rods II 32. The movable ends of the electric push rods II 32 are fixedly connected with arc-shaped plates 33. The top of the annular cylinder 31 is fixedly connected with a contraction component 34. One side of the annular cylinder 31 is fixedly connected with a collection component 35. The bottom of the annular cylinder 31 is fixedly connected with the bottom of the inner wall of the housing 1. The collection component 35 is slidably connected with the inner wall of the housing 1. The contraction component 34 includes a ceramic fiber board 341. The top of the ceramic fiber board 341 is fixedly connected with a hollow plastic shell 342. An arc-shaped hole 343 is opened at the bottom of the hollow plastic shell 342. The bottom of the hollow plastic shell 342 is fixedly connected with a tightening ring 344 through a connecting rod. A contraction rope 345 is arranged on the inner wall of the tightening ring 344. Both ends of the contraction rope 345 penetrate and are fixedly connected with concave fixing blocks 346. The upper and lower sides of the inner wall of the concave fixing block 346 are rotatably connected with a rotating rod 347 through a rotating bolt. The bottom of the rotating rod 347 is fixedly connected with a motor 348. One side of the concave fixing block 346 away from the rotating rod 347 is fixedly connected with a rectangular block 349. The bottom of the hollow plastic shell 342 is fixedly connected with a connecting spring 3410. The bottom of the ceramic fiber board 341 is fixedly connected with the top of the annular cylinder 31. The top of the motor 348 is fixedly connected with the bottom of the concave fixing block 346. The collection component 35 includes an annular electric slide rail 351. The bottom of the annular electric slide rail 351 is fixedly connected with a round rod 352. The bottom of the round rod 352 is fixedly connected with a scraper 353. The top of the annular electric slide rail 351 is fixedly connected with an inclined baffle 354. The inner wall of the annular electric slide rail 351 is fixedly connected with one side of the annular cylinder 31. One side of the inclined baffle 354 away from the annular electric slide rail 351 is fixedly connected with one side of the annular cylinder 31 close to the annular electric slide rail 351; The bouncing mechanism 5 includes a corrugated protective cover 51. On the outer side of the corrugated protective cover 51, there is a first corrugated sheet 52. On the side of the first corrugated sheet 52 away from the corrugated protective cover 51, a spring 53 is fixedly connected. At the end of the spring 53 away from the first corrugated sheet 52, a second corrugated sheet 54 is fixedly connected. On the side of the second corrugated sheet 54 away from the spring 53, a rope buckle 55 is fixedly connected. On the side of the second corrugated sheet 54 away from the spring 53, an electric telescopic rod 56 is fixedly connected. The movable end of the electric telescopic rod 56 is sleeved and fixedly connected with a sleeve block 57. On one side of the sleeve block 57, a rope 58 is fixedly connected. The bottom of the corrugated protective cover 51 is fixedly connected to the bottom of the inner wall of the housing 1, and the top of the corrugated protective cover 51 is fixedly connected to the bottom of the annular baffle 4. The end of the electric telescopic rod 56 away from the second corrugated sheet 54 is fixedly connected to one side of the inner wall of the housing 1. When in use, after the metal pipe is placed at the bottom of the inner wall of the housing 1, the second electric push rod 32 is started to drive the arc-shaped plate 33 to move, so as to fix and clamp the metal pipe to prevent the metal pipe from shifting. The two contraction ropes 345 are arranged inside the hollow plastic shell 342 and are symmetrically arranged on the left and right. The two ends of the two contraction ropes 345 are respectively extended from the arc-shaped holes, tightened and combined into one rope through the tightening ring 344, and penetrate through the top of the concave fixing block 346, wind around the surface of the rotating rod 347, and are fixedly connected to the bottom of the inner wall of the concave fixing block 346. When the driving shaft of the motor 348 rotates, it drives the rotating rod 347 to rotate, so that the number of turns of the contraction rope 345 wound around the surface of the rotating rod 347 increases. The contraction rope 345 drives the hollow plastic shell 342 to contract, fit the outer side of the metal pipe, and drive the ceramic fiber board 341 to contract inward to form an inclined plane, so that the slag can fall along the inclined plane to the bottom. The ceramic fiber board 341 has a low thermal conductivity, good heat insulation performance, can withstand high temperatures, effectively blocks the slag, and is soft in texture and can fit the surfaces of different shapes. When the slag falls to the bottom, the annular electric slide rail 351 is started, and the scraping plate 353 is driven to slide annularly through the round rod 352. The inclined plane of the scraping plate 353 fits the shape of the bottom of the inner wall of the housing 1, and the slag at the bottom is scraped away to the discharge pipe 6, so that the slag falls into the collection box 7 for internal collection and treatment. When the splashing slag contacts the corrugated protective cover 51, the elasticity on the surface of the corrugated protective cover 51 will bounce the slag to the bottom of the housing 1. If the slag cools and solidifies on the surface of the corrugated protective cover 51, the electric telescopic rod 56 pushes the first corrugated sheet 52, and the middle part of the first corrugated sheet 52 elastically deforms inward. The rope 58 passes through the rope buckle 55. When the electric telescopic rod 56 moves, the sleeve block 57 drives the rope 58 to move, and the rope buckle 55 moves obliquely backward, causing the two ends of the first corrugated sheet 52 to elastically deform. The first corrugated sheet 52 is connected to the second corrugated sheet 54 through the spring 53, and the second corrugated sheet 54 elastically deforms accordingly, acting on the corrugated protective cover 51 to cause the corrugated protective cover 51 to deform and detach and bounce the solidified slag on the surface.

[0014] When the present invention is in operation, the metal pipe is placed downward through the gap at the top of the slag blocking mechanism 2 and the fixing mechanism 3. During the placement process, the slag blocking mechanism 2 reduces the frictional force between the metal pipe, preventing damage to the inner wall of the metal pipe. After the metal pipe is placed at the bottom of the inner wall of the housing 1, the slag blocking mechanism 2 closes the pipe orifice at the top of the metal pipe to prevent slag from entering the pipe during welding. Then the fixing mechanism 3 is activated to fix the metal pipe. The top of the fixing mechanism 3 contracts to closely adhere to the outer side of the metal pipe. During welding, the slag rolls along the inclined plane to between the fixing mechanism 3 and the ejection mechanism 5. When the slag contacts the ejection mechanism 5, it will be bounced off and fall to the bottom of the housing 1. If the slag splashes, it will be blocked by the annular baffle 4 to prevent the slag from splashing outside the housing 1. If the welding slag cools and solidifies on the surface of the ejection mechanism 5, the ejection mechanism 5 is activated to undergo elastic deformation, causing the slag on the surface to break away and bounce off, falling to the bottom. The slag at the bottom is scraped off by the fixing mechanism 3 and enters the collection box 7 through the discharge pipe 6 for collection. When the metal pipe is placed in the housing 1, it contacts the pulley 25, and the pulley 25 rolls, reducing the frictional force with the inner wall of the metal pipe, enabling the metal pipe to move more smoothly, while reducing the possible wear on the inner wall of the metal pipe and better protecting the surface quality of the inner wall of the pipe. If the aperture of the metal pipe is small, the pulley 25 is squeezed, driving the telescopic block 24 to be squeezed, and the compression spring 23 starts to contract, causing the telescopic block 24 to slide inward within the inner wall of the rectangular sleeve block 22, which can better adapt to metal pipes with different apertures. After the metal pipe is placed at the bottom of the inner wall of the housing 1, the electric push rod 1 27 is activated, driving the slider 28 to slide upward along the chute 211, driving the rotating rod 29 to rotate, and causing the rotating block 210 to rotate to support the silica gel cloth 216 and the rubber ring 215 to form a plane, closing the inner wall of the pipe orifice at the welding joint of the metal pipe to prevent slag from entering the pipe. Due to the relatively large surface roughness of the rubber ring 215 itself, it more effectively blocks the slag. The silica gel cloth 216 is soft and elastic, can withstand a certain high temperature, can resist the erosion of the slag, and will not be damaged after contacting the slag. If the aperture of the metal pipe is small, the silica gel cloth 216 contracts inward, closely fitting the inner wall of the pipe, and the rubber ring 215 deforms simultaneously to fit the inner wall, adapting to metal pipes with different apertures. At the same time, the compression spring 212 undergoes elastic deformation to provide a buffering force to prevent the silica gel cloth 216 and the rubber ring 215 from cracking or losing elasticity due to excessive extrusion force. At the same time, through the expansion and contraction of the compression spring, it always ensures that the silica gel cloth 216 and the rubber ring 215 can closely fit the inner wall of the pipe, ensuring that the device has a good sealing and protection effect on metal pipes with different apertures and effectively preventing slag from entering the pipe. After the metal pipe is placed at the bottom of the inner wall of the housing 1, the electric push rod 2 32 is activated, driving the arc-shaped plate 33 to move to fix and clamp the metal pipe to prevent the metal pipe from shifting. The contraction ropes 345 are arranged inside the hollow plastic shell 342 and are symmetrically arranged left and right. The two ends of the two contraction ropes 345 are respectively extended from the arc-shaped holes.The tightening ring 344 is tightened to form a rope, which passes through the top of the concave fixing block 346, is wound around the surface of the rotating rod 347, and is fixed to the bottom of the inner wall of the concave fixing block 346. When the driving shaft of the motor 348 rotates, it drives the rotating rod 347 to rotate, so that the number of turns of the shrinkage rope 345 wrapped around the surface of the rotating rod 347 increases, and the shrinkage rope 345 drives the hollow plastic shell 342 to shrink and fit the outside of the metal pipe, and drives the ceramic fiber board 341 to shrink inward to form an inclined surface, so that the slag can fall to the bottom along the inclined surface. The ceramic fiber board 341 has low thermal conductivity and good thermal insulation performance. It can withstand high temperature and effectively block the slag. It is also soft and can fit surfaces of different shapes. When the slag falls to the bottom, the annular electric slide rail 351 is started, and the scraper 353 is driven to slide in an annular manner through the round rod 352, and the scraper 353 is fitted with the inclined surface. The bottom shape of the inner wall of the shell 1 scrapes the slag at the bottom to the discharge pipe 6, so that the slag falls into the collection box 7 for collection and treatment. When the slag splashes and contacts the corrugated protective cover 51, the elasticity of the surface of the corrugated protective cover 51 will bounce the slag to the bottom of the shell 1. If the slag cools and solidifies on the surface of the corrugated protective cover 51, the electric telescopic rod 56 pushes the corrugated sheet 1 52, and the middle part of the corrugated sheet 1 52 elastically deforms inward. The rope 58 passes through the rope buckle 55. When the electric telescopic rod 56 moves, the sleeve block 57 drives the rope 58 to move, and the rope buckle 55 moves obliquely backward, so that the two ends of the corrugated sheet 1 52 are elastically deformed. The corrugated sheet 1 52 is connected to the corrugated sheet 2 54 through the spring 53, and the corrugated sheet 2 54 is elastically deformed accordingly, acting on the corrugated protective cover 51, so that the corrugated protective cover 51 is deformed, and the slag solidified on the surface is separated and bounced off.

[0015] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A slag protection device for metal pipeline welding, comprising a housing (1), characterized in that: The bottom of the inner wall of the shell (1) is fixedly connected to a slag blocking mechanism (2), the bottom of the inner wall of the shell (1) is fixedly connected to a fixing mechanism (3), the top of the inner wall of the shell (1) is fixedly connected to an annular baffle (4), the bottom of the annular baffle (4) is fixedly connected to a drop mechanism (5), one side of the inner wall of the shell (1) is connected to a discharge pipe (6), the side of the discharge pipe (6) away from the shell (1) is connected to a collection box (7), and the bottom of the shell (1) is fixedly connected to a supporting foot (8); the bottom of the inner wall of the shell (1) is fixedly connected to the bottom of the drop mechanism (5); The slag blocking mechanism (2) comprises a rectangular column (21), one side of the rectangular column (21) is fixedly connected to a rectangular sleeve block (22), the side of the rectangular column (21) close to the rectangular sleeve block (22) is fixedly connected to a contraction spring (23), the end of the contraction spring (23) away from the rectangular column (21) is fixedly connected to a telescopic block (24), one side of the telescopic block (24) is rotatably connected to a pulley (25) via a rotating bolt, a rectangular groove (26) is provided on one side of the rectangular column (21), an electric push rod (27) is fixedly connected to the bottom of the inner wall of the rectangular groove (26), a slider (28) is fixedly connected to the movable end of the electric push rod (27), one side of the slider (28) is rotatably connected to a rotating rod (29) via a rotating bolt, and the rotating rod (29) is far away from the rectangular column (21). One end of the sliding block (28) is rotatably connected to a rotating block (210) via a rotating bolt, and one end of the rotating block (210) close to the rotating rod (29) is provided with a sliding groove (211), and one side of the inner wall of the sliding groove (211) is fixedly connected to a compression spring (212), and one end of the compression spring (212) away from the sliding groove (211) is fixedly connected to a rubber ring (215), and the top of the rectangular column (21) is fixedly connected to a cylinder (213), and one side of the cylinder (213) is provided with a plurality of grooves (214), and the plurality of grooves (214) are distributed on the cylinder (213), and one end of the compression spring (212) away from the sliding groove (211) is fixedly connected to a rubber ring (215), and the top of the rubber ring (215) is fixedly connected to a silicone cloth (216).

2. The slag protection device for metal pipeline welding according to claim 1, characterized in that: The bottom of the rectangular column (21) is fixedly connected to the bottom of the inner wall of the housing (1), the top of the rotating block (210) is fixedly connected to the bottom of the silicone cloth (216), and the inner wall of the groove (214) is rotatably connected to an end of the rotating block (210) away from the rotating rod (29) via a rotating bolt.

3. The slag protection device for metal pipeline welding according to claim 1, characterized in that: The fixing mechanism (3) comprises an annular cylinder (31), both sides of the inner wall of the annular cylinder (31) are fixedly connected to electric push rods 2 (32), the movable end of the electric push rods 2 (32) is fixedly connected to an arc plate (33), the top of the annular cylinder (31) is fixedly connected to a contraction component (34), and one side of the annular cylinder (31) is fixedly connected to a collection component (35).

4. The slag protection device for metal pipeline welding according to claim 3, characterized in that: The bottom of the annular cylinder (31) is fixedly connected to the bottom of the inner wall of the shell (1), and the collecting assembly (35) is slidably connected to the inner wall of the shell (1).

5. The slag protection device for metal pipeline welding according to claim 3, characterized in that: The shrinkage component (34) comprises a ceramic fiber board (341), the top of the ceramic fiber board (341) is fixedly connected to a hollow plastic shell (342), the bottom of the hollow plastic shell (342) is provided with an arc-shaped hole (343), the bottom of the hollow plastic shell (342) is fixedly connected to a tightening ring (344) via a connecting rod, the inner wall of the tightening ring (344) is provided with a shrinkage rope (345), both ends of the shrinkage rope (345) pass through and are fixedly connected to a concave fixing block (346), the upper and lower sides of the inner wall of the concave fixing block (346) are rotatably connected to a rotating rod (347) via a rotating bolt, the bottom of the rotating rod (347) is fixedly connected to a motor (348), the side of the concave fixing block (346) away from the rotating rod (347) is fixedly connected to a rectangular block (349), and the bottom of the hollow plastic shell (342) is fixedly connected to a connecting spring (3410).

6. The slag protection device for metal pipeline welding according to claim 5, characterized in that: The bottom of the ceramic fiber plate (341) is fixedly connected to the top of the annular cylinder (31), and the top of the motor (348) is fixedly connected to the bottom of the concave fixing block (346).

7. The slag protection device for metal pipeline welding according to claim 3, characterized in that: The collecting assembly (35) comprises an annular electric slide rail (351), the bottom of the annular electric slide rail (351) is fixedly connected to a round rod (352), the bottom of the round rod (352) is fixedly connected to a scraper (353), and the top of the annular electric slide rail (351) is fixedly connected to an oblique baffle (354).

8. The slag protection device for metal pipeline welding according to claim 7, characterized in that: The inner wall of the annular electric slide rail (351) is fixedly connected to one side of the annular cylinder (31), and the side of the inclined baffle (354) away from the annular electric slide rail (351) is fixedly connected to the side of the annular cylinder (31) close to the annular electric slide rail (351).

9. The slag protection device for metal pipeline welding according to claim 1, characterized in that: The drop mechanism (5) comprises a corrugated protective cover (51), a corrugated sheet 1 (52) is arranged on the outer side of the corrugated protective cover (51), a side of the corrugated sheet 1 (52) away from the corrugated protective cover (51) is fixedly connected to a spring (53), an end of the spring (53) away from the corrugated sheet 1 (52) is fixedly connected to a corrugated sheet 2 (54), a side of the corrugated sheet 2 (54) away from the spring (53) is fixedly connected to a rope buckle (55), a side of the corrugated sheet 2 (54) away from the spring (53) is fixedly connected to an electric telescopic rod (56), a sleeve block (57) is sleeved and fixedly connected to the movable end of the electric telescopic rod (56), and a rope (58) is fixedly connected to one side of the sleeve block (57).

10. The slag protection device for metal pipeline welding according to claim 9, characterized in that: The bottom of the corrugated protective cover (51) is fixedly connected to the bottom of the inner wall of the shell (1), the top of the corrugated protective cover (51) is fixedly connected to the bottom of the annular baffle (4), one end of the electric telescopic rod (56) away from the corrugated sheet 2 (54) is fixedly connected to one side of the inner wall of the shell (1), and the side of the rope (58) away from the sleeve block (57) is fixedly connected to one side of the inner wall of the shell (1).

Images