Smoke removal device for welding operation in closed space

Abstract

The utility model discloses a smoke removal device for welding operation in a closed space, and belongs to the technical field of smoke removal devices. The smoke removal device for welding operation in the closed space comprises a smoke removal box, an HEPA filter screen and an activated carbon filter layer are arranged in the smoke removal box, a powerful fan is arranged at the end, close to the activated carbon filter layer, of the smoke removal box, and a universal guide pipe is arranged at the end, away from the powerful fan, of the smoke removal box. And the tail end of the universal guide pipe is connected with an exhaust fume collecting hood through a spherical support. According to the smoke removal device for the welding operation in the closed space, the smoke collection hood special for smoke removal is arranged, the position of the smoke collection hood is controlled through the universal guide pipe, the smoke removal device can be aligned to a smoke dust concentration area for smoke removal, the flower type adsorption hood capable of being stored is arranged at the lower end of the smoke collection hood, and when the smoke removal device is used, the flower type adsorption hood is dispersed, so that the smoke removal effect is improved. The adsorption range of the exhaust fume collecting hood is expanded, harmful gas is mainly adsorbed, harmful components are filtered, and clean gas is exhausted.

Description

Technical Field

[0001] The utility model relates to the technical field of smoke removal devices, and more specifically, to a smoke removal device for welding operations in a confined space. Background Art

[0002] At present, the traditional smoke removal device for welding is to purify and recycle the generated suspended matter by the corresponding smoke removal mechanism provided on the machine body. This smoke removal mechanism is generally composed of a pipe body and a smoke removal machine head, etc.

[0003] Chinese Patent with publication number CN220993223U discloses a smoke removal device for welding. This smoke removal device for welding supports the corresponding area of the smoke removal mechanism and is not prone to problems such as damage caused by dragging and friction of the pipe body. The welding fumes contain harmful gases. Due to the certain mass and volume of the fumes, their movement is greatly affected by the air flow and tends to move along the direction of the air flow. The harmful gases are at the molecular level and they can diffuse and mix in the air relatively quickly. The diffusion speed of gases is usually faster than that of solid particles. The existing smoke removal devices absorb the fumes and harmful gases simultaneously, and there will be a certain amount of harmful gases mixed into the air. When welding in a confined space, there is a lack of natural ventilation, so it is difficult to discharge the harmful gases. In addition, the smoke removal device requires a more powerful fan system to quickly form sufficient air flow to rapidly extract a large amount of fumes and harmful gases generated during welding, cutting, etc. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a smoke removal device for welding operations in a confined space to solve the above deficiencies.

[0005] To achieve the above purpose, the technical solution provided by the utility model is as follows:

[0006] A smoke removal device for welding operations in a confined space of the utility model includes a smoke removal box. Inside the smoke removal box, there are a HEPA filter screen and an activated carbon filter layer. At one end of the smoke removal box close to the activated carbon filter layer, there is a powerful fan. At the end of the smoke removal box far from the powerful fan, there is a universal duct. The end of the universal duct is connected to a smoke collection hood through a spherical support. A gas collection component is installed on the smoke collection hood.

[0007] Preferably, a spherical connector is fixedly connected to the upper end of the smoke collection hood, a clamping plate is fixedly connected to the outer wall of the lower end of the smoke collection hood, and a metal filter screen is arranged at the entrance of the smoke collection hood.

[0008] Preferably, the gas collection component includes a flower-shaped adsorption hood, an adjustment ring, and a gas guide frame. The flower-shaped adsorption hoods are distributed equidistantly along the adjustment ring, and the gas guide frame is communicated with the flower-shaped adsorption hoods.

[0009] Preferably, one end of the flower-shaped suction hood is provided with an air duct, the air duct penetrates through the clamping plate, and a gear is fixedly connected to the position of the air duct inside the clamping plate, and activated carbon fiber cotton is arranged at the port of the flower-shaped suction hood.

[0010] Preferably, the air guiding frame includes an annular duct, a straight duct and an air guiding bamboo joint duct. The straight ducts are arranged at equal intervals on the annular duct. The lower end of the straight duct is movably connected to the air duct. The annular duct is communicated with the air guiding bamboo joint duct, and one end of the air guiding bamboo joint duct is communicated with the smoke removal box.

[0011] Preferably, the adjusting ring clamps with the clamping plate. Notches are arranged at equal intervals on the adjusting ring, and teeth are arranged on the notches, and the teeth are meshed with the gear.

[0012] Preferably, a rotating handle is arranged on one side of the adjusting ring.

[0013] Adopting the technical solution provided by the present invention, compared with the prior art, it has the following beneficial effects:

[0014] The smoke removal device for welding operation in a closed space of the present invention is provided with a smoke collecting hood for specifically removing smoke, and the position of the smoke collecting hood is controlled by a universal duct, and it can be aligned with the concentrated area of the smoke and dust for smoke removal. A flower-shaped suction hood that can be retracted is arranged at the lower end of the smoke collecting hood. When in use, the flower-shaped suction hood is dispersed to expand the suction range of the smoke collecting hood, mainly for adsorbing harmful gases. Through two-stage adsorption and filtration by activated carbon fiber cotton and an activated carbon filter layer, harmful components are filtered out, and clean gas is discharged, protecting the environment in the closed space. During non-welding time, both the flower-shaped suction hood and the universal duct can be retracted, and the smoke removal device is designed to be foldable and telescopic, which is convenient for operation and storage in a limited closed space. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is the overall structure diagram of the smoke removal device for welding operation in a closed space of the present invention;

[0016] Figure 2 It is a partial cross-sectional view of the smoke removal device for welding operation in a closed space of the present invention;

[0017] Figure 3 It is an exploded view of the smoke collecting hood and the gas collection assembly of the present invention;

[0018] Figure 4 It is an enlarged view of part A of the present invention.

[0019] In the figure: 1. Smoke extraction box; 11. HEPA filter; 12. Activated carbon filter layer; 13. Strong blower; 14. Universal duct; 2. Smoke collection hood; 21. Spherical connector; 22. Clamp; 23. Metal filter screen; 3. Gas collection assembly; 31. Flower-shaped adsorption hood; 311. Air duct; 312. Gear; 313. Activated carbon fiber cotton; 32. Adjusting ring; 321. Notch; 322. Teeth; 323. Rotating handle; 33. Air guide frame; 331. Annular duct; 332. Straight duct; 333. Air guide bamboo joint pipe. Detailed implementation mode

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0021] To further understand the content of the present invention, the present invention will be described in detail in conjunction with the accompanying drawings.

[0022] Combined with Figures 1 - 4 , in this embodiment, the smoke extraction device for welding operations in a closed space includes a smoke extraction box 1. Inside the smoke extraction box 1, there are a HEPA filter 11 and an activated carbon filter layer 12. At one end of the smoke extraction box 1 close to the activated carbon filter layer 12, there is a strong blower 13. At the end of the smoke extraction box 1 far from the strong blower 13, there is a universal duct 14. The universal duct 14 is composed of the ends of multiple hollow ducts connected by a damping universal pipe fitting connector, and can freely adjust the angle and height of the universal duct 14 to fix the smoke collection hood 2. The space enclosed by the smoke extraction box 1 and the HEPA filter 11 is communicated with the universal duct 14. The smoke and dust entering the smoke extraction box 1 from the universal duct 14 are filtered by the HEPA filter 11 and the activated carbon filter layer 12 in sequence and discharged from the strong blower 13. The HEPA filter 11 filters out fine particles, and the activated carbon filter layer 12 adsorbs harmful gases and odors. The end of the universal duct 14 is connected to a smoke collection hood 2 through a spherical support, and a gas collection assembly 3 is installed on the smoke collection hood 2.

[0023] In this embodiment, a spherical connector 21 is fixedly connected to the upper end of the smoke collecting hood 2. A conduction channel is provided in the middle of the spherical connector 21, and the conduction channel is communicated with the universal duct 14. The angle of the smoke collecting hood 2 can be rotated through the spherical connector 21 to adjust the position for welding, so that the smoke collecting hood 2 can absorb smoke and dust to the greatest extent. A clamping plate 22 is fixedly connected to the outer wall of the lower end of the smoke collecting hood 2, and a metal filter screen 23 is arranged at the entrance of the smoke collecting hood 2. The metal filter screen 23 first filters large particles to prevent large particles from entering the universal duct 14 and causing blockage.

[0024] In this embodiment, the gas collection assembly 3 includes a flower-shaped adsorption hood 31, an adjustment ring 32 and a gas guide frame 33. The flower-shaped adsorption hoods 31 are distributed at equal intervals along the adjustment ring 32. When the flower-shaped adsorption hoods 31 are combined, they can block the opening of the smoke collecting hood 2. When the flower-shaped adsorption hoods 31 are dispersed, they are distributed in a flower shape along the opening of the smoke collecting hood 2. The smoke collecting hood 2 collects smoke and dust, while the flower-shaped adsorption hoods 31 expand the adsorption area to adsorb the air around the smoke and dust and filter harmful gases mixed in the air. The gas guide frame 33 is communicated with the flower-shaped adsorption hood 31 and is used to provide suction force for the flower-shaped adsorption hood 31.

[0025] In this embodiment, a gas guide pipe 311 is arranged at one end of the flower-shaped adsorption hood 31. The gas guide pipe 311 penetrates through the clamping plate 22, and a gear 312 is fixedly connected to the position of the gas guide pipe 311 inside the clamping plate 22. An activated carbon fiber cotton 313 is arranged at the port of the flower-shaped adsorption hood 31. The gas guide pipe 311 sucks air into the flower-shaped adsorption hood 31, causing a negative pressure inside the flower-shaped adsorption hood 31. Harmful gases are adsorbed by the activated carbon fiber cotton 313 to remove harmful substances.

[0026] In this embodiment, the gas guide frame 33 includes an annular duct 331, a straight duct 332 and a gas guide joint pipe 333. Straight ducts 332 are arranged at equal intervals on the annular duct 331. The lower end of the straight duct 332 is movably connected to the gas guide pipe 311, and the gas guide pipe 311 is communicated with the gas guide pipe 311. At the same time, the gas guide pipe 311 can rotate inside the gas guide pipe 311. The annular duct 331 is communicated with the gas guide joint pipe 333. One end of the gas guide joint pipe 333 is communicated with the smoke removal box 1. The space enclosed by the HEPA filter screen 11, the activated carbon filter layer 12 and the smoke removal box 1 is communicated with the gas guide joint pipe 333. The gas entering the gas guide joint pipe 333 is not filtered by the HEPA filter screen 11 and is discharged after being secondarily filtered for harmful components by the activated carbon filter layer 12, reducing the filtration level and accelerating the passage of gas, which can improve the adsorption efficiency of harmful gases.

[0027] In this embodiment, the adjusting ring 32 is clamped by the clamping plate 22. The clamping plate 22 plays a fixing role on the adjusting ring 32. The adjusting ring 32 can only rotate on the clamping plate 22. Notches 321 are equidistantly arranged on the adjusting ring 32. Clamping teeth 322 are arranged on the notches 321. The clamping teeth 322 are engaged with the gear 312. When the adjusting ring 32 rotates, it can drive the clamping teeth 322 to move positions, drive the gear 312 to rotate, and then control the rotation of the flower-shaped suction hood 31, facilitating the storage of the flower-shaped suction hood 31. A rotating handle 323 is arranged on one side of the adjusting ring 32. The rotating handle 323 is used to control the rotation of the adjusting ring 32. The adjusting ring 32 is manually controlled to rotate, saving driving force. A driving structure can also be set to control the rotation of the adjusting ring 32 to flexibly adjust the position of the flower-shaped suction hood 31.

[0028] Working process: By adjusting the position of the universal duct 14, the smoke collecting hood 2 is controlled to move near the welding position. The smoke collecting hood 2 is oriented towards the welding position. The adjusting ring 32 is manually controlled to rotate, and the flower-shaped suction hood 31 is driven to disperse by the clamping teeth 322. During welding, the powerful blower 13 works. Through the universal duct 14 and the air guiding bamboo joint pipe 333, air is sucked into the smoke removal box 1. The smoke and dust are absorbed by the smoke collecting hood 2. The large particles are first filtered by the metal filter screen 23. The smoke and dust entering the smoke removal box 1 from the universal duct 14 are sequentially filtered by the HEPA filter screen 11 and the activated carbon filter layer 12. The harmful gas diffuses quickly. The flower-shaped suction hood 31 adsorbs the air in a circle around the periphery of the smoke and dust. The harmful gas is adsorbed by the activated carbon fiber cotton 313. After quickly removing the harmful substances, it is secondarily filtered by the activated carbon filter layer 12, and finally the clean gas is discharged through the powerful blower 13.

[0029] In summary: The smoke removal device for welding operations in a confined space of the present utility model is provided with a dedicated smoke collecting hood 2 for smoke removal, and the position of the smoke collecting hood 2 is controlled by the universal duct 14, which can be aligned with the concentrated area of the smoke and dust for smoke removal. A flower-shaped suction hood 31 that can be stored is arranged at the lower end of the smoke collecting hood 2. When in use, the flower-shaped suction hood 31 is dispersed to expand the adsorption range of the smoke collecting hood 2, mainly for adsorbing harmful gases. Through two adsorptions and filtrations by the activated carbon fiber cotton 313 and the activated carbon filter layer 12, the harmful components are filtered, and clean gas is discharged to protect the environment in the confined space. During non-welding time, both the flower-shaped suction hood 31 and the universal duct 14 can be stored. The smoke removal device is designed as a foldable and telescopic structure, which is convenient for operation and storage in a limited confined space.

[0030] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variation thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0031] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A smoke removal device for welding operations in a confined space, comprising a smoke removal box (1), characterized in that: Inside the smoke removal box (1), there is a HEPA filter screen (11) and an activated carbon filter layer (12). At one end of the smoke removal box (1) close to the activated carbon filter layer (12), there is a powerful blower (13). At the end of the smoke removal box (1) away from the powerful blower (13), there is a universal duct (14). The end of the universal duct (14) is connected with a smoke collection hood (2) through a spherical support. A gas collection component (3) is installed on the smoke collection hood (2).

2. The fume removal device for welding operations in a confined space according to claim 1, wherein: At the upper end of the smoke collection hood (2), there is a spherical connector (21) fixedly connected. On the outer wall at the lower end of the smoke collection hood (2), there is a clamping plate (22) fixedly connected. At the entrance of the smoke collection hood (2), there is a metal filter screen (23).

3. The smoke removal device for welding operations in a confined space according to claim 2, wherein: The gas collection component (3) includes a flower-shaped adsorption hood (31), an adjustment ring (32), and a gas guide frame (33). The flower-shaped adsorption hoods (31) are distributed equidistantly along the adjustment ring (32). The gas guide frame (33) is communicated with the flower-shaped adsorption hood (31).

4. The fume removal device for welding operations in a confined space according to claim 3, characterized in that: At one end of the flower-shaped adsorption hood (31), there is a gas guide pipe (311). The gas guide pipe (311) penetrates through the clamping plate (22), and a gear (312) is fixedly connected at the position of the gas guide pipe (311) inside the clamping plate (22). At the port of the flower-shaped adsorption hood (31), there is activated carbon fiber cotton (313).

5. The fume removal device for welding operations in a confined space according to claim 4, wherein: The gas guide frame (33) includes an annular duct (331), a straight duct (332), and a gas guide bamboo joint pipe (333). Straight ducts (332) are arranged equidistantly on the annular duct (331). The lower end of the straight duct (332) is movably connected with the gas guide pipe (311). The annular duct (331) is communicated with the gas guide bamboo joint pipe (333). One end of the gas guide bamboo joint pipe (333) is communicated with the smoke removal box (1).

6. The fume removal device for welding operations in a confined space according to claim 3, wherein: The adjustment ring (32) is clamped with the clamping plate (22). Notches (321) are opened equidistantly on the adjustment ring (32). On the notches (321), there are tooth catches (322). The tooth catches (322) are meshed with the gear (312).

7. The fume removal device for welding operations in an enclosed space according to claim 6, characterized in that: On one side of the adjustment ring (32), there is a rotating handle (323).

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