Handheld smoke suction welding gun
By using a high negative pressure fume extraction channel and a detachable handle design in a handheld fume extraction torch, the health hazards of welding fumes are solved, achieving effective fume removal and welding protection adaptable to multiple positions.
Patent Information
- Application Number
- CN202423177152.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-23
- Publication Date
- 2025-12-23
- Estimated Expiration
- 2034-12-23
AI Technical Summary
The fumes generated during welding pose a health hazard to welding workers, and existing technologies are unable to effectively remove the fumes, especially harmful particulate matter with a particle size in the range of 0.1~1μm.
A handheld fumigation welding gun was designed, which uses a high negative pressure fumigation channel to suck up welding fumes from the source before they float and spread. Combined with a detachable second handle, it can be adapted to different welding positions and improve the fumigation effect.
It effectively removes welding fumes, protects the health of welding workers, and improves the smoke extraction effect during the welding process, adapting to the needs of various welding positions.
Smart Images
Figure CN223699607U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of welding equipment technology, specifically relating to a handheld smoking welding torch. Background Technology
[0002] With the rapid development of the social economy and the improvement of industrial levels, the application of gas-shielded arc welding is becoming increasingly widespread. The welding process generates large amounts of fumes, and harmful substances in these fumes can enter the liver, lungs, cardiovascular system, and bloodstream through the respiratory tract, seriously affecting human health. Many of the fumes produced during welding have particle sizes in the range of 0.1~1μm, making them easily absorbed by the human body. Fume particles containing heavy metals and toxic substances (such as iron, manganese, potassium, and sodium) can increase the incidence of related diseases and even cause long-term harm. Therefore, a handheld fume extraction welding torch is needed to protect welding workers and purify the working environment. Utility Model Content
[0003] To address the aforementioned shortcomings, this invention proposes a handheld fumigation welding torch. While ensuring the torch can operate normally, a new handheld fumigation welding torch has been developed by combining it with a fumigation and dust removal device. It employs high negative pressure, using the internal space of the welding torch as a fumigation channel to extract welding fumes at their source before they can float and spread.
[0004] The technical solution of this utility model is: a handheld smoking welding gun, including a welding gun handle, the front end of which is equipped with a smoking bend and a smoking mouthpiece, the rear end of which is connected to one end of a movable ball joint through a handle locking ring, the other end of which is connected to one end of a smoking hose, and the other end of the smoking hose can be connected to an external smoking device.
[0005] The smoking hose, movable ball joint, welding torch handle, smoking bend, and smoking mouthpiece are all equipped with a connected smoking channel. The smoking mouthpiece is fitted onto the rear end of the nozzle opening of the welding torch nozzle, and the head end of the smoking mouthpiece has multiple smoking ports that communicate with the smoking channel. This is a smoking device that can absorb welding fumes from the welding torch nozzle to the outside through the smoking channel.
[0006] Furthermore, a welding torch switch is installed at the lower front end of the welding torch handle.
[0007] Furthermore, the welding torch handle is also provided with a detachable second handle, which includes a second switch that can activate the welding torch switch, facilitating flat welding, vertical welding and overhead welding operations.
[0008] Furthermore, the welding torch handle has crescent grooves and trapezoidal grooves on both sides, and the second handle has crescent wedges and trapezoidal wedges on both sides inside; the crescent grooves and crescent wedges cooperate, and the trapezoidal grooves and trapezoidal wedges cooperate.
[0009] A rectangular groove is provided at the lower front end of the welding torch handle, and a hook that can be adjusted for rotation by pressing a block is provided inside the second handle; when the hook and the rectangular groove are engaged, the welding torch handle and the second handle are firmly connected.
[0010] Furthermore, the highest surface of the pressing block is lower than the contour surface of the second handle. This prevents accidental pressing of the pressing block when the operator holds the second handle, improving safety during operation.
[0011] Furthermore, the second switch, hook, and press block within the second handle are integrally injection molded, making installation convenient.
[0012] The beneficial effects of this utility model are: it proposes a handheld fumigation welding torch, and, while ensuring the welding torch can operate normally, it combines a fumigation and dust removal device to develop a new handheld fumigation welding torch. It employs high negative pressure, using the internal space of the welding torch as a fumigation channel to completely extract welding fumes at their source before they float and spread.
[0013] Since the more perpendicular the welding torch nozzle is to the weld bead, the better the smoke extraction effect, using an auxiliary handle can meet the needs of various positions and efficient smoke extraction. In addition to normal operation with the handheld welding torch handle, the quick-attachment of a second handle facilitates flat, vertical, and overhead welding operations, and also improves smoke extraction during welding. Attached Figure Description
[0014] Figure 1 A schematic diagram of a handheld welding torch with a second handle installed;
[0015] Figure 2 A schematic diagram of a handheld fumigation welding torch;
[0016] Figure 3 A cross-sectional view of a handheld welding torch with a second handle attached;
[0017] Figure 4 for Figure 3 Enlarged view of A in the middle;
[0018] Figure 5 A partial structural diagram of a handheld fumigation welding torch;
[0019] Figure 6 This is a schematic diagram of the second handle.
[0020] In the diagram: 1. Welding torch nozzle, 2. Smoke mouthpiece, 3. Smoke bend, 4. Welding torch handle, 41. Handle locking ring, 42. Moving ball joint, 43. Welding torch switch, 44. Crescent groove, 45. Trapezoidal groove, 46. Rectangular groove, 47. Inclined surface, 5. Smoke hose, 6. Second handle, 61. Second switch, 611. Plastic spring, 612. Pin, 62. Crescent wedge, 63. Trapezoidal wedge, 64. Pressing block, 65. Hook, 66. Support column, 67. Swing rod, 68. Stop block, 7. Torsion spring, 8. Large limit block, 81. Large stop block, 9. Small limit block, 91. Small stop block, 10. Fume channel, 11. Welding fumes, 12. Smoke extraction equipment. Detailed Implementation
[0021] 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.
[0022] It should be noted that the directional terms such as left, right, up, down, front, and back in the embodiments of this utility model are only relative concepts or are based on the normal use state of the product, i.e., the direction of the product's movement, and should not be considered as limiting.
[0023] In addition, it should be noted that the dynamic terms such as "relative motion" mentioned in the embodiments of this utility model not only refer to changes in position, but also include movements such as rotation and rolling in which the position does not change relative to the position, but the state changes.
[0024] Finally, it should be noted that when a component is said to be "located on" or "set on" another component, it can be on the other component or may have an intervening component at the same time. When a component is said to be "connected to" another component, it can be directly connected to the other component or may have an intervening component at the same time.
[0025] like Figures 1 to 6The diagram shows a handheld fumigation welding torch. The front end of the torch handle 4 is equipped with a fumigation bend 3 and a fumigation mouthpiece 2. A welding torch switch 43 is located below the front end of the torch handle 4. The rear end of the torch handle 4 is equipped with a handle locking ring 41, a movable ball joint 42, and a fumigation hose 5. The torch handle 4 can also be assembled with a (detachable) second handle 6, which includes a second switch 61 and a torsion spring 7. The fumigation hose 5, movable ball joint 42, torch handle 4, fumigation bend 3, and fumigation mouthpiece 2 are internally connected to a fumigation channel 10. The fumigation mouthpiece 2 is fitted onto the rear end of the nozzle opening of the torch nozzle 1, and its head end has multiple fumigation ports communicating with the fumigation channel 10. During welding, under high negative pressure inside the torch, the welding fumes are drawn through the fumigation mouthpiece 2 into the fumigation equipment, filtered, and then discharged into the atmosphere, thus achieving the purpose of protecting workers and purifying the working environment.
[0026] In this embodiment, when welding is performed manually by holding the welding torch handle 4, the closer the angle between the welding torch nozzle 1 and the workpiece is to 90°, the better the smoke extraction effect. The second handle 6 is selected for installation or removal based on the specific welding position to improve the smoke extraction effect. When welding is performed manually by holding the welding torch handle 4, the welding operation begins by pressing the welding torch switch 43, and the smoke extraction device starts extracting smoke. The second switch 61 in the second handle 6 is an extension of the welding torch switch 43; the welding operation begins by pressing the second switch 61, and the smoke extraction device starts extracting smoke.
[0027] The welding torch handle 4 is connected to the second handle 6. The welding torch handle 4 has crescent grooves 44 and trapezoidal grooves 45 on both sides. The second handle 6 has grooves on both sides inside.
[0028] The crescent wedge 62 and the trapezoidal wedge 63. The crescent groove (on both sides) 44 mates with the crescent wedge (on both sides) 62, the trapezoidal groove (on both sides) 45 mates with the trapezoidal wedge (on both sides) 63, and the hook 65 mates with the rectangular groove 46, so as to achieve a firm connection between the welding gun handle 4 and the second handle 6.
[0029] In this embodiment, the crescent wedge 62 of the second handle 6 is first inserted into the crescent groove 44 of the welding gun handle 4. Then, the crescent wedge 62 rotates clockwise along the crescent groove 44, and the trapezoidal wedge 63 is inserted into the trapezoidal groove 45. Finally, the hook 65 is engaged in the rectangular groove 46 of the welding gun handle 4, thereby connecting the welding gun handle 4 with the second handle 6.
[0030] The second handle 6 is equipped with a torsion spring 7, a rocker arm 67, a support column 66, a hook 65, a large limit block 8, and a large stop block 81. The torsion spring 7 applies a torque to the rocker arm 67, and the large limit block 8 restricts the large stop block 81 from rotating around the support column 66 within a certain range.
[0031] In this embodiment, the torsion spring 7 in the second handle 6 applies a torque to the swing arm 67, the swing arm 67 rotates around the support column 66, the large stop block 81 abuts against the large limit block 8, and the highest surface of the pressing block 64 is lower than the contour surface of the second handle 6, so that the pressing block 64 will not be accidentally pressed when the second handle 6 is held manually, thus improving the safety during operation.
[0032] In this embodiment, the crescent wedge 62 of the second handle 6 is inserted into the crescent groove 44 of the welding torch handle 4. Then, the crescent wedge 62 rotates clockwise along the crescent groove 44, and the hook 65 is pushed open by the inclined surface 47. The torsion spring 7 applies a torque to the swing rod 67, and the swing rod 67 rotates around the support column 66. The swing rod 67 drives the hook 65 until the hook 65 is engaged in the rectangular groove 46 of the welding torch handle 4. The torque applied by the torsion spring 7 to the swing rod 67 extends to the hook 65, so that the hook 65 is firmly embedded in the rectangular groove 46, realizing a convenient, quick, and reliable connection between the second handle 6 and the welding torch handle 4.
[0033] In this embodiment, when the pressing block 64 is pressed down, the swing arm 67 rotates around the support column 66. The swing arm 67 drives the hook 65 to disengage from the rectangular groove 46. Then, the crescent wedge 62 rotates counterclockwise along the crescent groove 44, so that the second handle 6 can quickly disengage from the welding gun handle 4.
[0034] The above embodiments enable quick connection and quick disconnection between the second handle 6 and the welding torch handle 4.
[0035] The second handle 6 is equipped with a small limit block 9, a small stop block 91, a second switch 61, a plastic spring 611, and a pin 612. The second switch 61 rotates around the pin 612, and the plastic spring 611 applies a spring force to the second switch 61.
[0036] In this embodiment, under normal conditions, the plastic spring 611 applies elastic force to the second switch 61, causing the second switch 61 to rotate counterclockwise around the pin 612. The small stop 91 abuts against the small limit block 9, ensuring that the second switch 61 will not contact the welding gun switch 43 under normal conditions. When the second switch 61 is pressed, the second switch 61 rotates clockwise around the pin 612, and the second switch 61 abuts against the welding gun switch 43 to control the start and stop of welding.
[0037] In this embodiment, the hook 65, swing rod 67, pressing block 64, large stop block 81, plastic spring 611, small limit block 9, small stop block 91, second switch 61, and pin 612 are integrally injection molded, making installation convenient.
[0038] In this embodiment, while performing normal operations with the handheld welding torch handle 4, the quick installation of a second handle 6 on the welding torch handle 4 facilitates flat welding, vertical welding, and overhead welding operations, and also improves the smoke extraction effect during welding.
[0039] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.
Claims
1. A handheld fumigation welding torch, characterized in that: The welding torch handle (4) is equipped with a smoking bend (3) and a smoking mouthpiece (2) at the front end. The rear end of the welding torch handle (4) is connected to one end of a movable ball joint (42) through a handle locking ring (41). The other end of the movable ball joint (42) is connected to one end of a smoking hose (5). The other end of the smoking hose (5) can be connected to an external smoking device (12). The smoking hose (5), movable ball joint (42), welding torch handle (4), smoking bend (3) and smoking mouthpiece (2) are provided with a connected smoking channel (10); the smoking mouthpiece (2) is sleeved on the rear end of the nozzle opening of the welding torch nozzle (1), and the head end of the smoking mouthpiece (2) is provided with multiple smoking ports connected to the smoking channel (10); the smoking device (12) can absorb the welding fumes at the welding torch nozzle (1) through the smoking channel (10) to the outside.
2. The handheld fumigation welding torch according to claim 1, characterized in that: The welding torch handle (4) is equipped with a welding torch switch (43) located below the front end.
3. A handheld fumigation welding torch according to claim 2, characterized in that: The welding torch handle (4) is also provided with a detachable second handle (6), which includes a second switch (61) that can activate the welding torch switch (43) to facilitate flat welding, vertical welding and overhead welding operations.
4. A handheld fumigation welding torch according to claim 3, characterized in that: The welding torch handle (4) has crescent grooves (44) and trapezoidal grooves (45) on both sides, and the second handle (6) has crescent wedges (62) and trapezoidal wedges (63) on both sides inside; the crescent grooves (44) and crescent wedges (62) are engaged, and the trapezoidal grooves (45) and trapezoidal wedges (63) are engaged; A rectangular groove (46) is provided at the lower front end of the welding gun handle (4), and a hook (65) is provided inside the second handle (6) that can be adjusted by pressing block (64) to rotate; after the hook (65) and the rectangular groove (46) are engaged, the welding gun handle (4) and the second handle (6) are firmly connected.
5. A handheld fumigation welding torch according to claim 4, characterized in that: The highest surface of the pressing block (64) is lower than the contour surface of the second handle (6).
6. A handheld fumigation welding torch according to claim 4, characterized in that: The second switch (61), hook (65) and pressing block (64) inside the second handle (6) are integrally injection molded.