An automated welding fume abatement device
By designing an adjustable support frame and a detachable filter cartridge structure, the flexibility and maintenance problems of existing welding auxiliary fume removal devices have been solved, achieving efficient collection and purification of welding fumes and reducing maintenance costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU PROVINCE XUZHOU TECHNICIAN INST
- Filing Date
- 2025-07-09
- Publication Date
- 2026-06-09
AI Technical Summary
Existing welding fume extraction devices are difficult to adjust in terms of angle and position, resulting in untimely collection of welding fumes, poor purification effect, and cumbersome and costly maintenance.
A device comprising an exhaust fan, a filter cartridge, and a fume hood has been designed. The device is securely installed and its angle can be adjusted using hook and loop fasteners and an adjustable support frame. The filter cartridge structure is detachable for easy maintenance.
It achieves efficient collection and purification of welding fumes, reduces maintenance difficulty and cost, and provides flexibility to adapt to different welding scenarios.
Smart Images
Figure CN224333057U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of welding process auxiliary equipment, and in particular to an automated welding auxiliary fume removal device. Background Technology
[0002] In the field of automated welding, the large amount of welding fumes generated during the welding process not only pollutes the working environment, but also poses a serious threat to the health of operators, such as causing respiratory diseases and pneumoconiosis. Therefore, welding auxiliary fume removal devices have become an important piece of equipment to ensure the safe and efficient conduct of welding operations.
[0003] Existing welding fume extraction devices mostly employ fixed installations, making it difficult to flexibly adjust the angle and position of the fume hood, thus failing to meet the multi-angle welding operation requirements of automated welding equipment. When welding equipment switches between different workstations, these devices struggle to quickly and accurately follow the welding position to collect welding fumes, resulting in untimely collection of fumes in some areas and a significant reduction in purification efficiency. Furthermore, the filter components of traditional fume extraction devices are typically integrated structures, requiring complete disassembly and replacement for maintenance, which is cumbersome and costly, impacting the continuous operating efficiency and economy of the equipment. Therefore, an automated welding fume extraction device is proposed. Utility Model Content
[0004] The purpose of this invention is to solve the above problems by proposing an automated welding auxiliary fume removal device that is easy to adjust and maintain.
[0005] To achieve the above objectives, this utility model provides the following technical solution: an automated welding auxiliary fume removal device, including an exhaust fan, the air inlet of the exhaust fan is fitted with a first ventilation pipe via flange bolts, the upper end of the first ventilation pipe is welded to a filter cylinder, the front end of the filter cylinder is welded to a second ventilation pipe, the upper end of the second ventilation pipe is welded to a fume hood, a support frame is clamped on the outside of the fume hood, and hook and loop fasteners are fitted on the outer sides of the first ventilation pipe, the filter cylinder, and the second ventilation pipe near both ends.
[0006] Preferably, the filter cylinder includes a three-way cylinder welded to the upper end of a first ventilation pipe, a first rubber ring bonded and fixed inside the three-way cylinder at both ends, a cylinder cap fitted on the upper end of the three-way cylinder, a second rubber ring bonded to the inner side of the cylinder cap, and a filter element inserted into the three-way cylinder.
[0007] Preferably, the front end of the three-way cylinder is fixedly connected to and communicates with the lower end of the second ventilation pipe, and the outer sides of the two end rings of the filter element are attached to the inner sides of the first rubber ring. Both the first and second rubber rings have annular grooves on their inner sides.
[0008] Preferably, the fumigation hood includes a horn cover welded to the upper end of the second ventilation duct, and a filter screen adhered to the inside of the horn cover.
[0009] Preferably, the support frame includes a C-shaped clamping frame clamped at the lower end of the speaker cover, a connecting rod movably connected to the rear end of the C-shaped clamping frame, a first clamping plate movably connected to the rear end of the connecting rod, a first bolt passing through the C-shaped clamping frame, the through hole at the connection between the connecting rod and the first clamping plate, a rubber washer adhesively fixed to the front end of the C-shaped clamping frame and the rear end of the first clamping plate, a rubber gasket adhesively fixed to the C-shaped clamping frame, a second bolt passing through the through holes at both ends of the first clamping plate, a second clamping plate welded to the rear end of the second bolt, and a rubber pad adhesively fixed to the surfaces of the first clamping plate and the second clamping plate.
[0010] Preferably, the nut on the first bolt is a wing nut, the nut on the second bolt is a hexagonal nut, and the protrusions at both ends of the connecting rod are engaged in the limiting hole at the tail of the first bolt.
[0011] The beneficial effects of this utility model are as follows: By setting up this auxiliary smoke removal device, the following beneficial effects are achieved:
[0012] Highly efficient smoke removal: The exhaust fan provides negative pressure, which, together with the fume hood, expands the air intake area and can quickly collect welding fumes; the filter element inside the filter cartridge can effectively intercept welding fume particles and impurities, achieving highly efficient purification and ensuring clean air discharge.
[0013] Flexible installation and adjustment: The device can be securely installed on the welding machine's robotic arm using hook and loop fasteners and an adjustable support frame. The angle and position of the fume hood can be flexibly adjusted according to the welding position to adapt to different welding scenarios.
[0014] Easy maintenance: The filter cartridge adopts a detachable design, and the cover and filter element are easy to remove and replace. The rubber ring ensures a tight seal during disassembly and assembly, reducing maintenance difficulty and cost. Attached Figure Description
[0015] Appendix Figure 1 This is a schematic diagram of the structure of this utility model;
[0016] Appendix Figure 2 This is an exploded view of the filter cartridge structure of this utility model;
[0017] Appendix Figure 3 This is an exploded view of the structure of the smoking hood of this utility model;
[0018] Appendix Figure 4 This is an exploded view of the support frame structure of this utility model;
[0019] Appendix Figure 5 This is the utility model Figure 1 Enlarged view of point A in the middle;
[0020] Appendix Figure 6 This is the utility model Figure 4 Enlarged view of point B in the middle;
[0021] Appendix Figure 7 This is the utility model Figure 4 Enlarged diagram of point C in the middle.
[0022] Legend: 1. Exhaust fan; 2. Ventilation duct No. 1; 3. Filter cartridge; 301. T-junction; 302. Rubber ring No. 1; 303. Cylinder cover; 304. Rubber ring No. 2; 305. Filter element; 4. Ventilation duct No. 2; 5. Fume hood; 501. Horn cover; 502. Filter screen; 6. Support frame; 601. C-shaped clamp; 602. Connecting rod; 603. Clamping plate No. 1; 604. Bolt No. 1; 605. Rubber washer; 606. Rubber gasket; 607. Bolt No. 2; 608. Clamping plate No. 2; 609. Rubber pad; 7. Hook and loop fastener. Detailed Implementation
[0023] 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.
[0024] See Figure 1-7 As shown in the figure, an automated welding auxiliary fume removal device in this embodiment includes an exhaust fan 1. The air inlet of the exhaust fan 1 is connected to a first ventilation pipe 2 via flange bolts. The upper end of the first ventilation pipe 2 is welded to a filter cylinder 3. The front end of the filter cylinder 3 is welded to a second ventilation pipe 4. The upper end of the second ventilation pipe 4 is welded to a fume hood 5. A support frame 6 is clamped on the outside of the fume hood 5. Hook and loop fasteners 7 are fitted on the outer sides of the first ventilation pipe 2, the filter cylinder 3, and the second ventilation pipe 4 near both ends.
[0025] Specifically, the exhaust fan 1 provides the power source and continuously draws in air to create negative pressure, drawing the welding fumes generated during welding into the ventilation system and finally expelling them from the device. The exhaust fan is then fixed to the base of the automated welding machine via the lower chassis to ensure stable operation.
[0026] Ventilation duct 2 connects exhaust fan 1 and filter cartridge 3, forming an air circulation channel to deliver filtered air to exhaust fan 1;
[0027] The second ventilation pipe 4 connects the filter cartridge 3 and the fume hood 5, and transports the welding fumes drawn in by the fume hood 5 to the filter cartridge 3 for purification.
[0028] Hook and loop fasteners 7 are respectively placed on the outer sides of ventilation pipe 2, filter cylinder 3 and ventilation pipe 4 near both ends. The ventilation system is fixed to the welding machine robotic arm by binding and wrapping, so that it can move with the robotic arm and at the same time ensure the stability of the component connection.
[0029] See appendix Figure 1-2 As shown, the filter cylinder 3 includes a three-way cylinder 301 fused to the upper end of the first ventilation pipe 2, a first rubber ring 302 bonded and fixed inside the three-way cylinder 301 at both ends, a cylinder cover 303 fitted onto the upper end of the three-way cylinder 301, a second rubber ring 304 bonded to the inner side of the cylinder cover 303, and a filter element 305 inserted into the three-way cylinder 301.
[0030] The front end of the three-way cylinder 301 is fixedly connected to and communicates with the lower end of the second ventilation pipe 4. The outer sides of the two end rings of the filter element 305 are attached to the inner side of the first rubber ring 302. Both the first rubber ring 302 and the second rubber ring 304 have annular grooves on their inner sides.
[0031] Specifically, the three-way cylinder 301 is fused between the first ventilation pipe 2 and the second ventilation pipe 4 to form a cavity for air diversion and filtration; the first rubber ring 302 is bonded to both ends inside the three-way cylinder 301 to seal the gap between the filter element 305 and the cylinder wall, preventing unfiltered air leakage and providing anti-slip function; the cylinder cover 303 is fitted onto the upper end of the three-way cylinder 301 to seal the filter cylinder 3, and can be removed when replacing the filter element 305; the second rubber ring 304 is bonded to the inside of the cylinder cover 303 to enhance the sealing effect between the cylinder cover 303 and the three-way cylinder 301; the filter element 305 is inserted into the three-way cylinder 301, the core filtration component, which intercepts particulate impurities in welding fumes through its internal structure, purifying the air;
[0032] Filtration logic: Welding fumes enter the three-way cylinder 301 from the second ventilation duct 4, and are filtered from the outside to the inside by the filter element 305. Impurities are intercepted, and clean air enters the first ventilation duct 2.
[0033] See appendix Figure 1-3 As shown, the fumigation hood 5 includes a horn cover 501 welded to the upper end of the second ventilation pipe 4, and a filter screen 502 glued inside the horn cover 501.
[0034] Specifically, the horn cover 501 is fused to the upper end of the second ventilation pipe 4, expanding the suction area in a horn shape, covering the area above the welding torch, and efficiently collecting the welding fumes generated during welding; the filter screen 502 is bonded inside the horn cover 501, initially filtering large-volume debris to prevent it from entering the ventilation pipe and filter cylinder 3, thus protecting the internal components.
[0035] See appendix Figure 1-7As shown, the support frame 6 includes a C-shaped clamping frame 601 clamped at the lower end of the speaker cover 501, a connecting rod 602 movably connected to the rear end of the C-shaped clamping frame 601, a first clamping plate 603 movably connected to the rear end of the connecting rod 602, a first bolt 604 passing through the through hole at the connection between the C-shaped clamping frame 601, the connecting rod 602 and the first clamping plate 603, a rubber washer 605 bonded and fixed to the front end of the C-shaped clamping frame 601 and the rear end of the first clamping plate 603, a rubber gasket 606 bonded and fixed inside the C-shaped clamping frame 601, a second bolt 607 passing through the through holes at both ends of the first clamping plate 603, a second clamping plate 608 welded and connected to the rear end of the second bolt 607, and a rubber pad 609 bonded and fixed to the surface of the first clamping plate 603 and the second clamping plate 608.
[0036] The nut on the first bolt 604 is a wing nut, and the nut on the second bolt 607 is a hexagonal nut. The protrusions at both ends of the connecting rod 602 are inserted into the limiting hole at the tail of the first bolt 604.
[0037] Specifically, the C-shaped clamp 601 is clamped at the lower end of the horn cover 501 to fix the position of the fume hood 5. The rubber gaskets 605 and 606 at the front end and inside are used for anti-slip and cushioning. The connecting rod 602 movably connects the C-shaped clamp 601 and the first clamping plate 603, which can adjust the tilt angle of the fume hood 5 to adapt to different welding positions. The first clamping plate 603 and the second clamping plate 608 work together to clamp the welding machine robotic arm. The rubber pad 609 on the surface prevents wear on the robotic arm. The first bolt 604 passes through the C-shaped clamp 601, the connecting rod 602 and the first clamping plate 603. The wing nut makes it easy to manually adjust the angle of the connecting rod 602. The protrusion on the connecting rod 602 restricts the rotation of the first bolt 604 and makes it easy to tighten the wing nut. The second bolt 607 passes through both ends of the first clamping plate 603. After the hexagonal nut is tightened, the first clamping plate 603 and the second clamping plate 608 clamp the robotic arm and fix the entire support frame 6.
[0038] Adjustment logic: Loosening bolt 604 (number 1) adjusts the angle of the fume hood (number 5); loosening bolt 607 (number 2) allows for the removal and installation of the support frame (number 6). Rubber components enhance stability and protection.
[0039] Summary of device workflow
[0040] Ventilation power: The operation of the exhaust fan 1 generates negative pressure, which forms an airflow channel through the first ventilation pipe 2, the filter cartridge 3, and the second ventilation pipe 4.
[0041] Welding fume collection: The horn cover 501 of the fume hood 5 covers the welding torch, the filter screen 502 initially filters out large particles of debris, and the welding fume is drawn into the second ventilation pipe 4.
[0042] Purification and filtration: Welding fumes enter the filter cartridge 3 and are filtered from the outside to the inside by the filter element 305. Impurities are intercepted, and clean air enters the first ventilation pipe 2.
[0043] Air exhaust: The purified air enters the exhaust fan 1 through ventilation pipe 2 and is finally exhausted outside the device.
[0044] Maintenance and replacement: Pull the top cover 303 upwards to remove the filter element 305 for replacement. Rubber ring 302 and rubber ring 304 ensure a tight seal during disassembly and assembly.
[0045] The operation process of this utility model is as follows: When fixing the exhaust fan 1, the exhaust fan 1 is fixed to the base of the automatic welding machine with bolts through the lower chassis to ensure the machine body is stable and avoid vibration during operation;
[0046] When fixing the ventilation system to the robotic arm, hook and loop fasteners 7 are put on the outer sides of ventilation pipe 2, filter cylinder 3, and ventilation pipe 4 near both ends. The components are fixed to the welding machine robotic arm by binding and wrapping to ensure stability and no shaking when moving with the robotic arm.
[0047] When installing the support frame 6 and fixing the fume hood 5, clamp the C-shaped clamp 601 at the lower end of the horn cover 501. The rubber gasket 606 inside the C-shaped clamp is in close contact with the outer wall of the horn cover to prevent slippage. Adjust the angle of the connecting rod 602 so that the horn cover 501 of the fume hood 5 is aligned with the area above the welding torch to ensure that the suction area covers the welding point. Fix the connection between the connecting rod 602 and the C-shaped clamp 601 and the first clamp plate 603 by the wing nut on the first bolt 604. Tighten the nut to fix the angle of the fume hood.
[0048] Fix the support frame 6 to the robotic arm, press the first clamping plate 603 against the welding machine robotic arm, connect the second clamping plate 608 with the second bolt 607, so that the two clamping plates clamp the robotic arm, tighten the hexagonal nut of the second bolt 607, and ensure that the rubber pads 609 on the surface of the first clamping plate 603 and the second clamping plate 608 are in close contact with the robotic arm to prevent wear and fix it firmly;
[0049] When starting the exhaust fan 1, the power supply of the exhaust fan 1 is connected, the equipment is started, the exhaust fan runs and generates negative pressure, which forms an airflow channel through the first ventilation pipe 2, the filter cartridge 3, and the second ventilation pipe 4.
[0050] Welding fume collection and preliminary filtration: The horn cover 501 of the fume hood 5 covers the welding torch. Welding fumes are drawn into the horn cover 501 by negative pressure. The filter screen 502 inside the horn cover 501 preliminarily filters large-volume debris to prevent it from entering the ventilation duct.
[0051] During purification filtration and air exhaust, welding fumes enter the three-way cylinder 301 of the filter cylinder 3 through the second ventilation pipe 4, and are filtered from the outside of the filter element 305 inward. Particulate impurities are intercepted on the outer surface of the filter element 305. Clean air enters the first ventilation pipe 2, and the purified air enters the exhaust fan 1 through the first ventilation pipe 2, and is finally discharged from the exhaust port of the exhaust fan.
[0052] When adjusting the angle of the fume hood 5, if the welding position changes, loosen the wing nut of bolt 604, manually adjust the tilt angle of the connecting rod 602, so that the horn cover 501 is re-aligned with the welding point, and tighten the nut to fix it after adjustment.
[0053] When the smoke hood 5 is moved, if the position of the support frame 6 on the robotic arm needs to be moved, loosen the hex nut of bolt 607, slide clamp 603 and clamp 608 to the target position, and then tighten the nut to fix it.
[0054] When maintaining and replacing the filter element 305, pull up the cap 303 that is fitted onto the upper end of the three-way cylinder 301. The second rubber ring 304 on the inner side of the cap 303 will disengage simultaneously. Pull the filter element 305 out of the three-way cylinder 301. The two end rings of the filter element 305 will separate from the first rubber ring 302. Check the surface of the filter element 305 for the accumulation of impurities. If it is severely clogged, it needs to be replaced. Align the two end rings of the new filter element 305 with the first rubber ring 302 inside the three-way cylinder and insert it until the outer side of the ring is in contact with the inner surface of the first rubber ring 302 to ensure a seal. Put the cap 303 back onto the upper end of the three-way cylinder 301. The second rubber ring 304 will be inserted into the port of the three-way cylinder 301 to ensure that the cap 303 and the three-way cylinder 301 are tightly sealed to prevent unfiltered air from leaking out.
[0055] 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. An automated welding auxiliary fume removal device, characterized in that: The device includes an exhaust fan (1), the air inlet of which is connected to a first ventilation pipe (2) via flange bolts. The upper end of the first ventilation pipe (2) is welded to a filter cylinder (3), the front end of the filter cylinder (3) is welded to a second ventilation pipe (4), the upper end of the second ventilation pipe (4) is welded to a fumigation hood (5), and a support frame (6) is clamped on the outside of the fumigation hood (5). The first ventilation pipe (2), the filter cylinder (3), and the second ventilation pipe (4) are all fitted with hook and loop fasteners (7) near both ends on the outside of each other.
2. The automated welding auxiliary fume removal device according to claim 1, characterized in that: The filter cylinder (3) includes a three-way cylinder (301) fused to the upper end of the first ventilation pipe (2), a first rubber ring (302) bonded and fixed inside the three-way cylinder (301) at both ends, a cylinder cover (303) fitted on the upper end of the three-way cylinder (301), a second rubber ring (304) bonded to the inside of the cylinder cover (303), and a filter element (305) inserted into the three-way cylinder (301).
3. The automated welding auxiliary fume removal device according to claim 2, characterized in that: The front end of the three-way cylinder (301) is fixedly connected to the lower end of the second ventilation pipe (4) and communicates with it. The outer sides of the two end rings of the filter element (305) are attached to the inner side of the first rubber ring (302). The inner sides of the first rubber ring (302) and the second rubber ring (304) are both provided with annular grooves.
4. The automated welding auxiliary fume removal device according to claim 3, characterized in that: The smoking hood (5) includes a horn cover (501) welded to the upper end of the second ventilation pipe (4), and a filter screen (502) glued inside the horn cover (501).
5. An automated welding auxiliary fume removal device according to claim 4, characterized in that: The support frame (6) includes a C-shaped clamping frame (601) clamped at the lower end of the horn cover (501), a connecting rod (602) movably connected to the rear end of the C-shaped clamping frame (601), a first clamping plate (603) movably connected to the rear end of the connecting rod (602), a first bolt (604) passing through the through hole at the connection between the C-shaped clamping frame (601), the connecting rod (602) and the first clamping plate (603), a rubber washer (605) bonded and fixed to the front end of the C-shaped clamping frame (601) and the rear end of the first clamping plate (603), a rubber gasket (606) bonded and fixed in the C-shaped clamping frame (601), a second bolt (607) passing through the through holes at both ends of the first clamping plate (603), a second clamping plate (608) welded and connected to the rear end of the second bolt (607), and a rubber pad (609) bonded and fixed to the surface of the first clamping plate (603) and the second clamping plate (608).
6. An automated welding auxiliary fume removal device according to claim 5, characterized in that: The nut on the first bolt (604) is a wing nut, and the nut on the second bolt (607) is a hexagonal nut. The protrusions at both ends of the connecting rod (602) are inserted into the limiting hole at the tail of the first bolt (604).