Protective gas delivery device for removing metal spatter

Abstract

The application relates to the technical field of gas filtration, in particular to a protective gas conveying device capable of removing metal slag, which comprises a pipeline, a fixing disc is arranged on the pipeline, a rotating disc is rotationally connected in the fixing disc, a filter screen is fixedly installed on the rotating disc, a circular groove is arranged on one side of the filter screen, a fixing column is fixedly connected to one side of the rotating disc, the fixing column penetrates through the fixing disc, the fixing column is rotationally connected with the fixing disc, and a circular convex is fixedly connected to one end of the fixing column; one end of the fixing column is rotationally connected with a limiting pipe, a straight sliding groove and a spiral sliding groove are arranged in the limiting pipe, the straight sliding groove and the spiral sliding groove are in communication with each other, and the circular convex is slidably connected with the straight sliding groove and the spiral sliding groove. In the process of using the device, the slag on the filter screen can be automatically brushed off, so that the gas conveying is not affected.

Description

Technical Field

[0001] This invention relates to the field of gas filtration technology, specifically to a protective gas delivery device capable of removing metal debris. Background Technology

[0002] In high-temperature processing such as metal cutting, welding, and smelting, protective gases are typically supplied to the processing area to isolate it from air, reduce the risk of oxidation, and prevent combustion and explosion accidents. Inevitably, solid impurities will mix into the protective gas supply pipeline. In protective gas circuits equipped with gas recirculation and recovery systems, metal slag and dust generated in the high-temperature processing zone are drawn into the recirculation system through the return gas pipeline. Once these metal slag particles enter the recovery pipeline, they not only adhere to the surfaces of heat exchangers, compressor impellers, and fine filter elements, accelerating equipment wear, but are also re-ejected with the protective gas during the recirculation process, contaminating the processing area and affecting the quality of welds or smelting.

[0003] In the process of gas recovery and transportation, existing equipment generates metal slag in the processing area, which enters the pipeline along with the gas. As the usage time increases, the metal slag will clog the filter screen, resulting in increased pipeline pressure drop and decreased gas transportation efficiency, thus affecting the normal transportation of gas. Summary of the Invention

[0004] The purpose of this invention is to provide a protective gas conveying device that can remove metal slag, thereby solving the problem mentioned in the background art where, during the gas recovery and conveying process, metal slag generated in the processing area enters the pipeline along with the gas. As the usage time increases, the metal slag will clog the filter screen, leading to increased pipeline pressure drop and decreased gas conveying efficiency, thus affecting the normal conveying of gas.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a protective gas conveying device for removing metal slag, comprising a pipe, a fixed plate disposed on the pipe, a rotating plate rotatably connected inside the fixed plate, a filter screen fixedly installed on the rotating plate, a circular groove formed on the rotating plate, the circular groove being located on one side of the filter screen, a fixed column fixedly connected to one side of the rotating plate, the fixed column passing through the fixed plate and rotatably connected to the fixed plate, and a circular protrusion fixedly connected to one end of the fixed column; One end of the fixed column is rotatably connected to a limiting tube. The limiting tube has a straight sliding groove and a spiral sliding groove inside. The straight sliding groove and the spiral sliding groove are interconnected. The round protrusion is slidably connected to the straight sliding groove and the spiral sliding groove. One end of the limiting tube is fixedly connected to a hydraulic rod. The hydraulic rod is fixedly installed on the pipeline. A collection chamber is provided below the fixed plate.

[0006] Furthermore, the fixed disk has a sliding groove inside, and a sealing tube is slidably connected inside the sliding groove. One end of the sealing tube abuts against a return spring, and the return spring is located inside the sliding groove.

[0007] Furthermore, a sealing rod is slidably connected inside the sealing tube, one end of the sealing rod is fixedly connected to the hydraulic rod, and one end of the sealing tube is fixedly connected to an air pipe.

[0008] Furthermore, a pair of sealing ring grooves are provided inside the fixed disk, and the sealing ring grooves are respectively located on both sides of the rotating disk. A sealing ring is slidably connected inside the sealing ring groove. One end of the air pipe is connected to the sealing ring groove, and the two sealing ring grooves are connected to each other through a connecting pipe.

[0009] Furthermore, the fixed plate is provided with an arc-shaped sliding groove, and the two ends of the arc-shaped sliding groove are provided with guide straight grooves, and the two ends of the guide straight grooves are connected by a guide wave groove.

[0010] Furthermore, a sliding ball is slidably connected inside the guide straight groove and the guide wave groove. A guide rod is fixedly connected to one side of the sliding ball. The guide rod is slidably connected to the arc-shaped groove. A brush is fixedly connected to one end of the guide rod. A control gear is fixedly installed on the guide rod. The control gear meshes with an arc rack. The arc rack is located on one side of the arc-shaped groove.

[0011] Furthermore, an arc-shaped guide groove is provided on the lower side of the fixed plate, and a limiting post is slidably connected inside the arc-shaped guide groove. A fixing rod is fixedly connected to one end of the limiting post.

[0012] Furthermore, a ball slider is slidably connected inside one end of the fixed rod. The ball slider is used to engage with the circular groove. A limiting spring is provided between the ball slider and the inside of the fixed rod. The ball slider abuts against one side of the rotating disk.

[0013] Furthermore, a limiting rod is fixedly connected to one end of the fixing rod, the limiting rod is sleeved on the guide rod, and the guide rod and the limiting rod are rotatably connected.

[0014] The technical solution provided by this invention has the following advantages compared with the known prior art: 1. In this invention, after the ball slider engages with the circular groove, the rotation of the rotating disk drives the guide rod and brush to slide along the arc-shaped groove. The sliding ball enters the guide wave groove from the guide straight groove. The curve of the wave groove continuously pushes the brush to squeeze and approach the filter screen, so that the bristles are inserted into the filter holes. At the same time, the control gear meshes with the arc rack to automatically drive the brush to rotate. When the hydraulic rod pulls the limiting tube to slide to the right, the rotating disk reverses and the brush rotates in the opposite direction to perform secondary cleaning. The forward and reverse bidirectional coverage ensures that all debris inside and outside the filter holes is removed. II. This invention restricts the switching between straight and spiral grooves inside the tube. In the straight groove stage, the round protrusion slides in a straight line, the fixed column does not rotate, and the sealing ring retracts synchronously. When switching to the spiral groove stage, the round protrusion slides along the spiral trajectory, automatically driving the rotating disk and filter screen to rotate, and the cleaning mechanism starts synchronously. The same hydraulic rod also achieves air extraction and sealing ring retraction and air inflation sealing in sequence through the cooperation of the sealing rod and sealing tube. The sequence of all actions is automatically determined by the shape of the groove, the spring force, and the locking structure. No sensors or additional control systems are required, resulting in fewer failure points, simple maintenance, and low cost. Third, before the rotating disk rotates, the hydraulic rod first pushes the limiting tube to slide to the left. The sealing rod slides inside the sealing tube to generate negative pressure. The gas in the sealing ring groove is drawn in through the air pipe, so that the sealing ring is completely retracted and separated from the rotating disk. There is zero friction during rotation. After cleaning, the hydraulic rod pulls the limiting tube to slide to the right. The sealing tube slides to the right synchronously with the sealing rod under the action of the return spring. The gas inside the tube is not squeezed. The gas is squeezed into the sealing ring groove only after the sealing tube returns to its original position, pushing the sealing ring to smoothly fit the rotating disk and restore the seal. The sealing ring and the rotating disk only switch between complete fit and complete separation. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the hydraulic rod structure of the present invention; Figure 3 This is a schematic diagram of the brush structure of the present invention; Figure 4 This is a schematic diagram of the cross-sectional structure of the pipeline of the present invention; Figure 5 For the present invention Figure 4 Enlarged structural diagram at point A in the middle; Figure 6 For the present invention Figure 4Enlarged structural diagram at point B; Figure 7 This is a schematic cross-sectional view of the limiting tube structure of the present invention; Figure 8 This is a schematic diagram of the limiting rod structure of the present invention; Figure 9 This is a schematic cross-sectional view of the fixing rod structure of the present invention; Figure 10 This is a schematic diagram of the arc-shaped guide groove structure of the present invention; Figure 11 This is a schematic diagram of the unfolded structure of the arc-shaped groove of the present invention.

[0017] In the diagram: 1. Pipe; 2. Fixed disc; 3. Rotating disc; 4. Filter screen; 5. Circular groove; 6. Fixed column; 7. Circular protrusion; 8. Restricting tube; 9. Straight slide groove; 10. Spiral slide groove; 11. Hydraulic rod; 12. Sliding groove; 13. Sealing rod; 14. Sealing tube; 15. Return spring; 16. Air pipe; 17. Sealing ring groove; 18. Sealing ring; 19. Connecting pipe; 20. Arc-shaped slide groove; 21. Guide straight groove; 22. Guide wave groove; 23. Sliding ball; 24. Guide rod; 25. Brush; 26. Control gear; 27. Arc rack; 28. Arc-shaped guide groove; 29. ​​Restricting column; 30. Fixed rod; 31. Circular slider; 32. Restricting spring; 33. Restricting rod; 34. Collection chamber. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0019] The present invention will be further described below with reference to embodiments.

[0020] Example: A protective gas delivery device for removing metal debris, such as... Figures 1-11 As shown, it includes a pipe 1, a fixed plate 2 is provided on the pipe 1, a rotating plate 3 is rotatably connected inside the fixed plate 2, a filter screen 4 is fixedly installed on the rotating plate 3, a circular groove 5 is opened on the rotating plate 3, the circular groove 5 is located on one side of the filter screen 4, a fixed post 6 is fixedly connected to one side of the rotating plate 3, the fixed post 6 passes through the fixed plate 2 and is rotatably connected to the fixed plate 2, and a circular protrusion 7 is fixedly connected to one end of the fixed post 6; One end of the fixed column 6 is rotatably connected to a limiting tube 8. The limiting tube 8 has a straight sliding groove 9 and a spiral sliding groove 10 inside. The straight sliding groove 9 and the spiral sliding groove 10 are interconnected. The round protrusion 7 is slidably connected to the straight sliding groove 9 and the spiral sliding groove 10. Through the design of the slidable connection between the round protrusion 7 and the spiral sliding groove 10, when the limiting tube 8 drives the spiral sliding groove 10 to slide, the round protrusion 7 and the fixed column 6 can rotate together under the guidance of the spiral sliding groove 10. The rotation of the fixed column 6 can drive the rotating disk 3 and the filter screen 4 to rotate together, thereby cleaning the filter screen 4. One end of the limiting tube 8 is fixedly connected to a hydraulic rod 11. The hydraulic rod 11 is fixedly installed on the pipe 1. Through the design of the hydraulic rod 11, it can drive the limiting tube 8 to slide. A collection chamber 34 is provided below the fixed disk 2. Through the design of the collection chamber 34, metal slag can be collected.

[0021] The fixed plate 2 has a sliding groove 12 inside, and a sealing tube 14 is slidably connected inside the sliding groove 12. The design of the sliding groove 12 can provide sufficient sliding space for the sealing tube 14. One end of the sealing tube 14 abuts against a return spring 15, which is located inside the sliding groove 12.

[0022] A sealing rod 13 is slidably connected inside the sealing tube 14. One end of the sealing rod 13 is fixedly connected to the hydraulic rod 11. One end of the sealing tube 14 is fixedly connected to the air pipe 16. It should be noted that an air hole is opened at one end of the sealing tube 14 to prevent the sealing rod 13 from getting stuck during the sliding process inside the sealing tube 14.

[0023] The fixed disk 2 has a pair of sealing ring grooves 17 inside, which are located on both sides of the rotating disk 3. A sealing ring 18 is slidably connected inside the sealing ring groove 17. One end of the air pipe 16 is connected to the sealing ring groove 17. The two sealing ring grooves 17 are connected to each other through a connecting pipe 19. Through the design of the connecting pipe 19, the sealing rings 18 on both sides of the filter screen 4 can be controlled to open or close synchronously.

[0024] The fixed plate 2 has an arc-shaped slide groove 20, and the two ends of the arc-shaped slide groove 20 are provided with guide straight grooves 21, and the two guide straight grooves 21 are connected by a guide wave groove 22.

[0025] A sliding ball 23 is slidably connected inside the guide straight groove 21 and the guide wave groove 22. A guide rod 24 is fixedly connected to one side of the sliding ball 23. The guide rod 24 is slidably connected to the arc-shaped slide groove 20. Through this design, the arc-shaped slide groove 20 can guide and restrict the position of the guide rod 24, preventing the guide rod 24 from shifting position during rotation. A brush 25 is fixedly connected to one end of the guide rod 24. The brush 25 can clean the filter screen 4. A control gear 26 is fixedly installed on the guide rod 24. The control gear 26 meshes with an arc rack 27. The arc rack 27 is located on one side of the arc-shaped slide groove 20. Through the design of the control gear 26 and the arc rack 27, the guide rod 24 can be driven to rotate, thereby realizing the rotation of the brush 25.

[0026] An arc-shaped guide groove 28 is provided on the lower side of the fixed plate 2. A limiting post 29 is slidably connected inside the arc-shaped guide groove 28. A fixing rod 30 is fixedly connected to one end of the limiting post 29. Through the design of the arc-shaped guide groove 28, the position of the limiting post 29 can be restricted to prevent positional deviation.

[0027] A ball slider 31 is slidably connected inside one end of the fixed rod 30. The ball slider 31 is used to engage with the circular groove 5. A limiting spring 32 is provided between the ball slider 31 and the fixed rod 30. The ball slider 31 abuts against one side of the rotating disk 3. The design of the ball slider 31 can reduce the friction between it and the rotating disk 3.

[0028] One end of the fixed rod 30 is fixedly connected to a limiting rod 33, which is sleeved on the guide rod 24 and rotatably connected to the guide rod 24 and the limiting rod 33. This design can limit the position of the guide rod 24, so that the guide rod 24 can operate within a predetermined trajectory and prevent shaking.

[0029] As the equipment is used for a longer period of time, a significant amount of metal debris will become stuck in the filter holes of filter screen 4. When filter screen 4 needs cleaning, first activate hydraulic rod 11, see... Figure 4The hydraulic rod 11 pushes the limiting tube 8 to slide to the left. As the limiting tube 8 slides to the left, it can drive the straight slide groove 9 and the spiral slide groove 10 to slide together, so that the round protrusion 7 slides in the straight slide groove 9 first. At this time, the fixed column 6 will not rotate. As the hydraulic rod 11 slides to the left, it will drive the sealing rod 13 to slide together, so that the sealing rod 13 slides in the sealing tube 14. As the sealing rod 13 slides in the sealing tube 14, the sealing tube 14 is pushed by the return spring 15, so that the sealing rod 13 will not push the sealing tube 14 to slide together when it slides in the sealing tube 14. When the sealing rod 13 slides in the sealing tube 14, a negative pressure is generated inside the sealing tube 14, so that the air pipe 16 can suck the inside of the sealing ring groove 17. Through the adsorption in the sealing ring groove 17, the gas in the sealing ring groove 17 can be sucked into the sealing tube 14. While the gas in the sealing ring groove 17 is being drawn in, the connecting pipe 19 also draws the gas from both sides of the sealing ring groove 17 into the sealing pipe 14. Simultaneously, the gas in the sealing ring groove 17 is drawn in, causing the sealing rings 18 on both sides of the rotating disk 3 to move away from the rotating disk 3, preventing the surface of the sealing rings 18 from contacting the filter screen 4. This design reduces friction between the sealing rings 18 and the rotating disk 3 during subsequent rotation, increasing the service life of the sealing rings 18. When the gas in the sealing ring grooves 17 on both sides is completely drawn in, the sealing rod 13 continues to move with the hydraulic rod 1. 1. When the air tube 16 slides to the left, air no longer enters the sealing tube 14. This causes the sealing rod 13 to slide to the left, which in turn drives the sealing tube 14 to slide to the left. It should be noted that the length of the air tube 16 is sufficient to slide with the sealing tube 14 without excessive pulling. This causes the return spring 15 to deform, providing power for the subsequent reset of the sealing tube 14. It should also be noted that the round protrusion 7 of the sealing tube 14 will slide from the straight groove 9 into the spiral groove 10 after sliding. This design ensures that the rotating disk 3 will only rotate when the sealing ring 18 is completely retracted into the sealing ring groove 17.

[0030] When the round protrusion 7 slides into the spiral groove 10, the hydraulic rod 11 will continue to push the limiting tube 8 to slide to the left, causing the fixed column 6 to rotate under the cooperation of the round protrusion 7 and the spiral groove 10. Simultaneously, the rotating disk 3 can drive the filter screen 4 and the round groove 5 to rotate together. Figure 4 and Figure 5 The circular groove 5 is positioned directly above the filter screen 4. When the circular groove 5 rotates with the rotating disk 3 to the position of the spherical slider 31, see... Figure 9The limiting spring 32 is in a charged state at this time. When the circular groove 5 slides to the spherical slider 31, the limiting spring 32 will apply a pushing force to the spherical slider 31, so that the spherical slider 31 can be locked into the circular groove 5. At this time, the brush 25 is aligned with the filter screen 4. The spherical slider 31 can be engaged with the circular groove 5, so that when the rotating disk 3 continues to drive the filter screen 4 and the circular groove 5 to rotate, the spherical slider 31, the fixed rod 30, the limiting post 29, the limiting rod 33, the guide rod 24, the brush 25 and the sliding ball 23 can move together in an arc shape under the action of the spherical slider 31 and the circular groove 5. The movement allows the sliding ball 23 and guide rod 24 to slide within the arc-shaped groove 20. As the guide rod 24 slides within the arc-shaped groove 20, it drives the control gear 26 to rotate. Simultaneously, under the action of the arc rack 27, the control gear 26 drives the guide rod 24 and brush 25 to rotate, enabling the brush 25 to clean the filter screen 4. At this time, the limiting post 29 slides within the arc-shaped guide groove 28. Through the design of the limiting post 29, it can provide support for the guide rod 24 and brush 25, preventing the guide rod 24 and brush 25 from tilting or swaying during the movement. It should be noted that when the ball slider 31 engages with the circular groove 5, the rotating disk 3 has already driven the filter screen 4 to rotate out of the fixed disk 2. With this design, when the brush 25 cleans the filter screen 4, the debris on the filter screen 4 can fall directly into the collection chamber 34 for convenient centralized processing.

[0031] As the guide rod 24 slides within the arc-shaped groove 20, it drives the sliding ball 23 to slide as well. The sliding ball 23 first slides within the guide straight groove 21. With the continuous rotation of the rotating disk 3, the ball slider 31, the sliding ball 23, and the guide rod 24 move continuously, allowing the sliding ball 23 to slide from the guide straight groove 21 into the guide wave groove 22. This allows the sliding ball 23 to push the guide rod 24 and the brush 25 towards the filter screen 4, squeezing them together. This design allows the bristles of the brush 25 to penetrate into the filter holes of the filter screen 4, enabling the brush 25 to clean the inside of the filter holes while rotating, dislodging debris stuck in the filter holes and further improving the cleaning effect on the filter screen 4.

[0032] When the sliding ball 23 slides into the guide groove 21 at the other end, the guide rod 24 has already slid to the end of the arc-shaped groove 20, and the limiting post 29 has also slid to the end of the arc-shaped guide groove 28. At this time, the hydraulic rod 11 will pull the limiting tube 8 back to slide, so that the rotating disk 3 can reverse, so that the brush 25 can reverse along with the rotating disk 3. At the same time, the brush 25 can rotate in the opposite direction under the action of the control gear 26 and the arc rack 27, so that the brush 25 can clean the filter screen 4 again, further improving the cleaning effect of the filter screen 4. When the guide rod 24 and the limiting post 29 slide to their initial positions, the guide rod 24 slides to the end of the arc-shaped groove 20, and the limiting post 29 slides to the end of the arc-shaped guide groove 28. At this time, the limiting tube 8 will continue to slide back, causing the rotating disk 3 to continue to reverse. Meanwhile, the guide rod 24 and the limiting post 29 can no longer continue to reverse with the rotating disk 3. This will cause the ball slider 31 to be subjected to greater pressure, causing the ball slider 31 to slide into the fixed rod 30 under the compression of the circular groove 5. At the same time, the limiting spring 32 will deform, preparing for the next cleaning. As the limiting tube 8 continues to slide back, when the filter screen 4 rotates to the pipe 1, the circular protrusion 7 will slide from the spiral groove 10 into the straight groove 9. As the hydraulic rod 11 continues to pull, it will drive the sealing rod 13 to slide to the right. While the sealing rod 13 slides to the right, the sealing tube 14 will be under the action of the return spring 15. As the sealing rod 13 slides together, this design prevents the sealing rod 13 from compressing the gas in the sealing tube 14 when it resets with the hydraulic rod 11, thus avoiding wear on the sealing ring 18 in contact with the rotating disk 3. After the sealing tube 14 slides back to its initial position, the sealing rod 13 will slide within the sealing tube 14 only after the hydraulic rod 11 continues to pull. At this time, the rotating disk 3 has already driven the filter screen 4 to reset. While compressing the gas in the sealing tube 14, the gas in the sealing tube 14 will enter the air pipe 16 and the sealing ring groove 17. Under the action of the gas, the sealing ring 18 will slide together, allowing the sealing ring 18 to seal around the filter screen 4 and prevent gas leakage. It should be noted that the entire cleaning process is short and will not have a significant impact on the recovery of normal gas. The filter screen 4 can also be cleaned during the intervals between work breaks.

[0033] In this embodiment: Driven by a single hydraulic rod 11, the automatic cleaning and sealing reset of the filter screen 4 are completed in a strict sequence: First, the hydraulic rod 11 pushes the limiting tube 8 to slide to the left, the round protrusion 7 slides in the straight slide groove 9, the fixed column 6 does not rotate, and at the same time, the sealing rod 13 slides in the sealing tube 14 to generate negative pressure, which draws gas from the sealing ring groove 17 through the air pipe 16, causing the sealing ring 18 to retract and disengage from the rotating disk 3, avoiding friction and wear during subsequent rotation; after the gas is drawn out, the sealing tube 14 is driven to slide to the left, and the reset spring 15 stores energy; then the round protrusion 7 enters the spiral slide groove 10, the spiral groove 10 guides its rotation, driving the rotating disk 3 and the filter screen 4 to rotate out, the round groove 5 engages with the ball slider 31, and transmits the rotational motion of the rotating disk 3 to the brush 25 cleaning mechanism, the sliding... The moving ball 23 enters the guide wave groove 22 through the guide straight groove 21, pushing the brush 25 to squeeze and approach the filter screen 4. At the same time, the control gear 26 meshes with the arc rack 27 to drive the brush 25 to rotate, realizing a composite cleaning of surface cleaning and deep cleaning inside the filter holes. The limiting column 29 slides in the arc guide groove 28 to provide support and prevent shaking. After cleaning, the hydraulic rod 11 pulls the limiting tube 8 to slide to the right, the filter screen 4 reverses to perform secondary cleaning, the ball slider 31 is compressed back into the fixed rod 30, the limiting spring 32 stores energy, the round protrusion 7 returns to the straight sliding groove 9, and the filter screen 4 is smoothly reset. Finally, the sealing tube 14 slides to the right synchronously under the drive of the reset spring 15, squeezing the gas in the tube into the air tube 16 and the sealing ring groove 17, pushing the sealing ring 18 to re-attach to the rotating disk 3 to restore the seal. The entire process uses a single hydraulic rod 11 as the sole power source. By switching between the straight slide groove 9 and the spiral slide groove 10, guiding the squeezing of the wave groove 22, and controlling the linkage between the gear 26 and the arc rack 27, the orderly connection of four major functions—protection of the sealing ring 18, rotation of the filter screen 4, deep cleaning of the brush 25, and automatic reset—is achieved. This not only avoids interference between components but also significantly extends the life of the sealing ring 18 and ensures thorough cleaning.

[0034] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A protective gas conveying device for removing metal slag, comprising a pipeline (1), characterized in that: A fixed plate (2) is provided on the pipe (1). A rotating plate (3) is rotatably connected inside the fixed plate (2). A filter screen (4) is fixedly installed on the rotating plate (3). A circular groove (5) is opened on the rotating plate (3). The circular groove (5) is located on one side of the filter screen (4). A fixed column (6) is fixedly connected to one side of the rotating plate (3). The fixed column (6) passes through the fixed plate (2) and is rotatably connected to the fixed plate (2). A circular protrusion (7) is fixedly connected to one end of the fixed column (6). One end of the fixed column (6) is rotatably connected to a limiting tube (8). The limiting tube (8) has a straight sliding groove (9) and a spiral sliding groove (10) inside. The straight sliding groove (9) and the spiral sliding groove (10) are interconnected. The round protrusion (7) is slidably connected to the straight sliding groove (9) and the spiral sliding groove (10). One end of the limiting tube (8) is fixedly connected to a hydraulic rod (11). The hydraulic rod (11) is fixedly installed on the pipe (1). A collection chamber (34) is provided below the fixed plate (2).

2. The protective gas conveying device for removing metal slag according to claim 1, characterized in that: The fixed plate (2) has a sliding groove (12) inside, and a sealing tube (14) is slidably connected inside the sliding groove (12). One end of the sealing tube (14) abuts against a return spring (15), and the return spring (15) is located inside the sliding groove (12).

3. The protective gas conveying device for removing metal slag according to claim 2, characterized in that: The sealing tube (14) is internally slidably connected to a sealing rod (13), one end of which is fixedly connected to the hydraulic rod (11), and one end of the sealing tube (14) is fixedly connected to an air pipe (16).

4. The protective gas conveying device for removing metal slag according to claim 3, characterized in that: The fixed disk (2) has a pair of sealing ring grooves (17) inside. The sealing ring grooves (17) are located on both sides of the rotating disk (3). A sealing ring (18) is slidably connected inside the sealing ring groove (17). One end of the air pipe (16) is connected to the sealing ring groove (17). The two sealing ring grooves (17) are connected to each other through a connecting pipe (19).

5. A protective gas conveying device for removing metal slag according to claim 1, characterized in that: The fixed plate (2) is provided with an arc-shaped slide groove (20), and the two ends of the arc-shaped slide groove (20) are provided with guide straight grooves (21), and the two ends of the guide straight grooves (21) are connected by a guide wave groove (22).

6. The protective gas conveying device for removing metal slag according to claim 5, characterized in that: A sliding ball (23) is slidably connected inside the guide straight groove (21) and the guide wave groove (22). A guide rod (24) is fixedly connected to one side of the sliding ball (23). The guide rod (24) is slidably connected to the arc-shaped slide groove (20). A brush (25) is fixedly connected to one end of the guide rod (24). A control gear (26) is fixedly installed on the guide rod (24). The control gear (26) meshes with an arc rack (27). The arc rack (27) is located on one side of the arc-shaped slide groove (20).

7. A protective gas conveying device for removing metal slag according to claim 6, characterized in that: An arc-shaped guide groove (28) is provided on the lower side of the fixed plate (2), and a limiting post (29) is slidably connected inside the arc-shaped guide groove (28). A fixing rod (30) is fixedly connected to one end of the limiting post (29).

8. A protective gas conveying device for removing metal slag according to claim 7, characterized in that: A ball slider (31) is slidably connected inside one end of the fixed rod (30). The ball slider (31) is used to engage with the circular groove (5). A limiting spring (32) is provided between the ball slider (31) and the inside of the fixed rod (30). The ball slider (31) abuts against one side of the rotating disk (3).

9. A protective gas conveying device for removing metal slag according to claim 8, characterized in that: One end of the fixed rod (30) is fixedly connected to a limiting rod (33), the limiting rod (33) is sleeved on the guide rod (24), and the guide rod (24) and the limiting rod (33) are rotatably connected.

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