A smoke purification device for steel structure welding
By integrating fume purification equipment next to the welding torch, the problem of low fume treatment efficiency during welding has been solved, achieving efficient fume purification and environmental protection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XINJIANG XINYE BUILDING INTEGRATION TECH CO LTD
- Filing Date
- 2025-06-17
- Publication Date
- 2026-07-21
AI Technical Summary
Existing welding equipment is inefficient in terms of fume treatment and the equipment is separate, making it impossible to capture the fumes generated during the welding process in a timely and effective manner, which pollutes the environment and threatens the health of workers.
Design a fume purification device integrated next to a welding torch, including an air intake pipe, a suction fan, a filter screen, and a three-way catalytic converter. The air intake pipe is directly connected to the welding torch, the suction fan draws out the fume, the filter screen filters out particulate matter, and the three-way catalytic converter treats harmful gases.
It enables timely handling of fumes during welding, improves purification efficiency, protects the environment and worker health, and reduces equipment space requirements.
Smart Images
Figure CN224524276U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of steel structure welding technology, specifically to a fume purification device for steel structure welding. Background Technology
[0002] The welding process of steel structures generates a large amount of fumes. These fumes contain various harmful substances, such as metal oxide particles and harmful gases (e.g., carbon monoxide, nitrogen oxides). On the one hand, if these fumes are directly released into the air, they will seriously pollute the environment, adversely affecting the surrounding air quality and exacerbating air pollution problems, especially in densely populated urban areas or industrial clusters. On the other hand, for welding workers, long-term exposure to an environment containing large amounts of fumes can easily lead to respiratory and lung diseases, such as pneumoconiosis, seriously threatening the health of welding workers.
[0003] Traditional welding equipment typically focuses solely on welding functionality and has limited capacity to handle the fumes generated during the welding process. While some welding workshops are equipped with independent fume purification systems, these systems are often separate from the welding equipment, occupying significant workshop space and exhibiting poor fume collection efficiency, failing to capture the fumes generated during welding in a timely and effective manner, resulting in low purification efficiency. Utility Model Content
[0004] The purpose of this invention is to provide a fume purification device for steel structure welding to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a fume purification device for steel structure welding, comprising:
[0006] Connecting components, intake pipe, exhaust fan, filter screen, exhaust pipe, and three-way catalytic converter;
[0007] The suction pipe is hollow and open at the bottom. The connecting component is connected to the suction pipe and is used to connect the suction pipe to the welding gun.
[0008] One end of the air outlet pipe is connected to the upper side of the side wall of the air intake pipe, the filter screen is installed on the lower side of the inner cavity of the air intake pipe, the suction fan is installed on the air outlet pipe, and the end of the air outlet pipe away from the air intake pipe is connected to the three-way catalytic converter.
[0009] Preferably, the connecting assembly includes a welding torch connecting sleeve, a connecting rod, and a pipe sleeve. The pipe sleeve is fixedly fitted onto the outer wall of the suction pipe. The two ends of the connecting rod are respectively connected to the welding torch connecting sleeve and the pipe sleeve. Fastening screws are screwed onto the outer wall of the welding torch connecting sleeve.
[0010] Preferably, one end of the connecting rod is configured as a universal adjustable gooseneck rod.
[0011] Preferably, there are two filter screens, which are arranged parallel to each other vertically, and the mesh diameter of the upper filter screen is smaller than that of the lower filter screen.
[0012] Preferably, the outer edge of the filter screen is covered with an anti-slip rubber ring, which is tightly attached between the outer wall of the filter screen and the inner wall of the air intake pipe.
[0013] Preferably, the inner wall of the air intake pipe is provided with a limiting ring, and the upper filter plate is supported under the limiting ring.
[0014] Preferably, an inner support rod is fixedly connected between the two filter screens, and the bottom end of the inner support rod extends downward to the lower side of the lower filter screen.
[0015] Compared with the prior art, the beneficial effects of this utility model are:
[0016] When in use, this solution involves directly installing components such as the air intake pipe, exhaust fan, filter screen, air outlet pipe, and three-way catalytic converter next to the welding torch via a connecting assembly. This allows for air extraction, filtration, and catalytic reaction at the welding point without affecting the normal operation of the welding torch.
[0017] Promptly treat welding gases to ensure the quality of the surrounding environment. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the structure of this utility model;
[0019] Figure 2 This is a schematic diagram of the internal structure of the suction tube of this utility model;
[0020] Figure 3 This is a schematic diagram of the structure of this utility model in use.
[0021] In the diagram: 1. Welding torch connecting sleeve; 2. Fastening screw; 3. Connecting rod; 4. Universal adjusting gooseneck rod; 5. Pipe sleeve; 6. Suction pipe; 7. Exhaust fan; 8. Limiting ring; 9. Filter screen; 10. Inner support rod; 11. Anti-slip rubber ring; 12. Exhaust pipe; 13. Three-way catalytic converter. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0023] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0024] Example 1:
[0025] Please see Figure 1-3 This utility model provides a technical solution: a fume purification device for steel structure welding, comprising: a connecting component, an air suction pipe 6, an exhaust fan 7, a filter screen 9, an air outlet pipe 12, and a three-way catalytic converter 13;
[0026] The intake pipe 6 is hollow and open at the bottom. The connecting component is connected to the intake pipe 6 and is used to connect the intake pipe 6 to the welding gun. One end of the exhaust pipe 12 is connected to the upper side of the side wall of the intake pipe 6. The filter plate 9 is installed on the lower side of the inner cavity of the intake pipe 6. The suction fan 7 is installed on the pipeline of the exhaust pipe 12. The end of the exhaust pipe 12 away from the intake pipe 6 is connected to the three-way catalytic converter 13.
[0027] Analysis of the above content: such as Figure 3As shown, this is one of the welding devices used in this application (this device roughly reflects existing technology; since it is not the subject of protection of this application, it is only shown in a simplified drawing). The suction pipe 6 is installed to the welding torch of the welding device via a connecting assembly (the welding torch adopts existing technology, including its operation and feeding methods). The welding torch moves with the upper drive moving assembly to weld the steel structure to be welded on the lower side. At this time, the fume purification device moves with the welding torch. The fumes generated during the welding process are drawn into the suction pipe from the lower side by the suction fan 7. Inside the intake pipe 6, the upper part of the intake pipe 6 is closed. Then, the air enters the exhaust pipe 12 and the three-way catalytic converter 13 from the intake pipe 6. When entering the intake pipe 6, solid particles are filtered by the filter screen plate 9. The mesh size of the filter screen plate 9 is set according to the size of the dust particles generated during the welding process. The filtered flue gas enters the three-way catalytic converter 13. The three-way catalytic converter 13 treats carbon monoxide and nitrogen oxides in the flue gas (carbon monoxide and nitrogen oxides are the main harmful substances in the flue gas. If there are other harmful gases, corresponding treatment equipment can be connected in series after the three-way catalytic converter 13).
[0028] Example 2:
[0029] Please see Figure 1-3 This utility model provides a technical solution based on Embodiment 1: the connecting assembly includes a welding gun connecting sleeve 1, a connecting rod 3 and a pipe sleeve 5. The pipe sleeve 5 is fixedly sleeved on the outer wall of the suction pipe 6. The two ends of the connecting rod 3 are respectively connected to the welding gun connecting sleeve 1 and the pipe sleeve 5. A fastening screw 2 is screwed onto the outer wall of the welding gun connecting sleeve 1. One end of the connecting rod 3 is set as a universal adjusting gooseneck rod 4.
[0030] Analysis of the above content: The universal adjustable gooseneck rod 4 is a metal rod that can be adjusted at multiple angles. It is used in practice, such as in some adjustable-angle desk lamps, and will not be elaborated here. The dimensions of the welding torch connecting sleeve 1 and the pipe sleeve 5 are set according to the specific dimensions of the suction pipe 6 and the outer wall of the welding torch, so that the welding torch connecting sleeve 1 and the pipe sleeve 5 can be fitted onto them.
[0031] Example 3:
[0032] Please see Figure 1-3 Based on Embodiment 1, this utility model provides a technical solution: two filter screens 9 are provided, and the two filter screens 9 are arranged in parallel vertically, and the mesh diameter of the upper filter screen 9 is smaller than that of the lower filter screen 9.
[0033] Analysis of the above content: The smoke and dust pass through two filter plates 9 from bottom to top. Large particles in the smoke and dust are filtered first, followed by small particles. As the airflow continues to flow upward, the particles are not easily pushed off the filter plates 9 by the airflow, and therefore are not likely to fall onto the steel structure surface (this can also be proven by contradiction: if the particles were to fall onto the steel structure, they would not rise with the airflow at the beginning, although a very few exceptions may exist). After each use, the filter plates 9 can be removed for cleaning.
[0034] Example 4:
[0035] Please see Figure 1-3 Based on Embodiment 3, this utility model provides a technical solution: the outer edge of the filter screen plate 9 is covered with an anti-slip rubber ring 11, and the anti-slip rubber ring 11 is tightly attached between the outer wall of the filter screen plate 9 and the inner wall of the air intake pipe 6.
[0036] Analysis of the above content: The anti-slip rubber ring 11 makes the filter screen 9 tightly connected to the inner wall of the air intake pipe 6 through friction, so that it will not fall off. It can also be fixed to the filter screen 9 from the outside by screws, which pass through the air intake pipe 6 and are connected to the outer wall of the filter screen 9.
[0037] Example 5:
[0038] Please see Figure 1-3 This utility model provides a technical solution based on embodiment three: the inner wall of the air intake pipe 6 is provided with a limiting ring 8, and the upper filter plate 9 is supported on the lower part of the limiting ring 8.
[0039] Analysis of the above content: The setting of the limiting ring 8 limits the filter screen 9 and prevents the upper filter screen 9 from being blown up by the airflow.
[0040] Example 6:
[0041] Please see Figure 1-3 This utility model provides a technical solution based on any one of Embodiment 3, Embodiment 4 or Embodiment 5: an inner support rod 10 is fixedly connected between two filter screens 9, and the bottom end of the inner support rod 10 extends downward to the lower side of the lower filter screen 9.
[0042] Analysis of the above content: The inner support rod 10 connects and fixes the upper and lower filter screens 9. The inner support rod 10 extends to the lower side, which facilitates the downward movement and removal of the inner support rod 10 and the filter screen 9.
[0043] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It is obvious to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description. Therefore, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this utility model, and no reference numerals in the claims should be considered as limiting the scope of the claims.
[0044] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A fume purification device for steel structure welding, characterized in that, include: Connecting components, intake pipe (6), suction fan (7), filter screen (9), exhaust pipe (12) and three-way catalytic converter (13); The suction pipe (6) is hollow and open at the bottom. The connecting component is connected to the suction pipe (6) and is used to connect the suction pipe (6) to the welding gun. One end of the air outlet pipe (12) is connected to the upper side of the side wall of the air intake pipe (6), the filter screen plate (9) is installed on the lower side of the inner cavity of the air intake pipe (6), the suction fan (7) is installed on the pipe of the air outlet pipe (12), and the end of the air outlet pipe (12) away from the air intake pipe (6) is connected to the three-way catalytic converter (13).
2. The fume purification equipment for steel structure welding according to claim 1, characterized in that: The connecting assembly includes a welding torch connecting sleeve (1), a connecting rod (3), and a pipe sleeve (5). The pipe sleeve (5) is fixedly sleeved on the outer wall of the suction pipe (6). The two ends of the connecting rod (3) are respectively connected to the welding torch connecting sleeve (1) and the pipe sleeve (5). A fastening screw (2) is screwed onto the outer wall of the welding torch connecting sleeve (1).
3. The fume purification equipment for steel structure welding according to claim 2, characterized in that: One section of the connecting rod (3) is configured as a universal adjustable gooseneck rod (4).
4. The fume purification equipment for steel structure welding according to claim 1, characterized in that: There are two filter screens (9), and the two filter screens (9) are arranged in parallel, with the mesh diameter of the upper filter screen (9) being smaller than that of the lower filter screen (9).
5. The fume purification equipment for steel structure welding according to claim 4, characterized in that: The outer edge of the filter screen (9) is covered with an anti-slip rubber ring (11), which is tightly attached between the outer wall of the filter screen (9) and the inner wall of the air intake pipe (6).
6. The fume purification equipment for steel structure welding according to claim 4, characterized in that: The inner wall of the air intake pipe (6) is provided with a limiting ring (8), and the filter screen plate (9) on the upper side is supported on the lower part of the limiting ring (8).
7. A fume purification device for steel structure welding according to any one of claims 4-6, characterized in that: An inner support rod (10) is fixedly connected between the two filter screens (9), and the bottom end of the inner support rod (10) extends downward to the lower side of the lower filter screen (9).