Smoke exhaust assembly for argon arc welding of waste cleaning vehicle

Abstract

The utility model relates to the technical field of argon arc welding smoke exhaust, and discloses a smoke exhaust assembly for argon arc welding of a waste cleaning vehicle, which comprises a movable frame, a movable multi-stage air draft part and a filtering exhaust part, and a fixed block is fixedly mounted at the top of the movable frame. By means of the multi-layer filtering structure, argon arc welding smoke conveyed from the air draft and smoke exhaust connector can be gradually and finely purified, and it is avoided that the argon arc welding smoke enters the follow-up link to cause blockage or affect the follow-up filtering effect; a mounting mode convenient to operate is realized through structures such as a sealing plate and a positioning rod, when the filter layers are used for a long time, the filtering effect of the filter layers is reduced and the filter layers need to be replaced, an operator can easily lift the sealing plate by virtue of a lifting handle on the sealing plate, and then the corresponding filter layers are pulled out along a mounting groove to be replaced; positioning and installation are facilitated through the positioning holes and the positioning rods.

Description

Technical Field

[0001] This utility model relates to the field of argon arc welding fume extraction technology, specifically a fume extraction assembly for argon arc welding of scrap vehicles. Background Technology

[0002] During argon arc welding operations on waste removal vehicles, a large amount of welding fumes are generated. These fumes contain various harmful substances, such as metal particles, ozone, and nitrogen oxides. If not treated promptly and effectively, they can cause serious harm to the health of operators. For example, long-term inhalation may lead to respiratory diseases and lung damage. They can also affect visibility in the working environment, reduce work efficiency, and may cause pollution and corrosion to the waste removal vehicle and surrounding equipment.

[0003] Traditional fume extraction systems have several shortcomings in TIG welding applications for scrap metal trucks. Some systems have fixed structures that cannot be flexibly adjusted to changes in welding position, resulting in poor fume collection. For example, when welding workpieces at different locations or heights, fixed fume hoods cannot accurately cover the welding points, allowing large amounts of fume to escape into the surrounding environment. Furthermore, in terms of fume filtration, some existing equipment uses only a single filtration layer or has low filtration efficiency. Simple filtration structures cannot effectively remove fine particles and harmful gases from the fume, failing to meet environmental and health safety requirements. Moreover, replacing the filter layer is often complex, requiring specialized tools or complicated procedures, which means that the filter layer cannot be replaced in a timely manner during actual use, further reducing the performance and lifespan of the fume extraction components. Utility Model Content

[0004] The purpose of this invention is to provide a fume extraction assembly for argon arc welding of waste trucks, in order 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 extraction assembly for argon arc welding of waste trucks, comprising a movable frame, a movable multi-stage exhaust section, and a filter exhaust section, wherein a fixing block is fixedly installed on the top of the movable frame; the movable multi-stage exhaust section is disposed between the fixing blocks; and the filter exhaust section is disposed on one side of the movable frame.

[0006] Preferably, the movable multi-stage exhaust unit specifically includes: an exhaust hood, fixedly installed between the fixed blocks; exhaust vent connectors, equidistantly connected at the top of the exhaust hood; and an electric telescopic rod, located at the bottom of the movable frame. The exhaust hood, fixedly installed between the fixed blocks, is relatively stable and can be moved as a whole by the movable frame, accurately covering the welding area of ​​the argon arc welding on the waste truck. The hood contains a primary exhaust pipe, a first secondary exhaust pipe, and a second secondary exhaust pipe, which work in conjunction with an exhaust fan. The primary exhaust pipe quickly collects most of the smoke near the welding area, while the secondary exhaust pipes further guide and collect any remaining smoke not completely collected by the primary exhaust. The synergistic effect of the multi-stage exhaust significantly improves the efficiency of smoke collection, increasing the smoke collection rate compared to a single-stage exhaust system.

[0007] Preferably, the telescopic end of the electric telescopic rod is fixedly connected to the bottom outer wall of the mobile frame, and a caster wheel is rotatably connected to the bottom outer wall of the electric telescopic rod.

[0008] Preferably, an exhaust filter screen is fixedly installed on the inner wall of the fume hood. A primary exhaust duct, a first secondary exhaust duct, and a second secondary exhaust duct are fixedly installed inside the fume hood. Mounting brackets are fixedly installed on the inner walls of each of the three ducts, and exhaust fans are fixedly installed on the outer walls of the mounting brackets. These exhaust fans, installed within the primary, secondary, and second exhaust ducts, form a multi-stage exhaust structure. The exhaust fan in the primary exhaust duct can quickly collect the large amount of smoke generated in the welding area. Due to its strong suction, it can initially guide the smoke into the exhaust system. The exhaust fans in the second secondary exhaust ducts further enhance the suction, further extracting any smoke not completely collected by the primary exhaust, preventing smoke residue and leakage.

[0009] Preferably, the inner walls of the secondary exhaust pipe 1 and the secondary exhaust pipe 2 are both fixedly installed with secondary ventilation screens, and the inner wall of the primary exhaust pipe is fixedly installed with a primary ventilation screen. The primary exhaust pipe, the secondary exhaust pipe 1, and the secondary exhaust pipe 2 are all connected to the exhaust and smoke discharge connector.

[0010] Preferably, the filter exhaust section specifically includes: a movable base plate, disposed on one side of the movable frame; two casters, rotatably connected to the bottom of the movable base plate; and an air pump, fixedly installed on the top outer wall of the movable base plate.

[0011] Preferably, a smoke exhaust filter box is fixedly installed on the top of the movable base plate. A sealing mounting top plate is fixedly installed on the inner wall of the smoke exhaust filter box. The sealing mounting top plate has mounting grooves and positioning mounting holes. A positioning rod is engaged with the positioning mounting holes. A sealing plate is fixedly installed on the top of the positioning rod. The smoke exhaust filter box contains a primary filter layer, a secondary filter layer, and a high-grade filter layer. Together with the exhaust filter screen, primary ventilation screen, and secondary ventilation screen in the fume hood, it forms a multi-stage filtration system. The smoke generated from the welding area first passes through the primary filtration in the fume hood to intercept large particles of smoke and dust, and then enters the smoke exhaust filter box.

[0012] Preferably, a handle is fixedly installed on the top of the sealing plate, and a primary filter layer, a secondary filter layer, and a high-grade filter layer are fixedly installed on the bottom outer wall of the sealing plate, respectively. The primary filter layer, the secondary filter layer, and the high-grade filter layer are all slidably connected to the mounting groove. A smoke inlet is connected to the outer wall of the smoke exhaust filter box, and smoke exhaust connecting pipes are equidistantly connected to the outer wall of the smoke inlet. The other end of the smoke exhaust connecting pipe is connected to the exhaust joint. The suction end of the air pump is connected to the smoke exhaust filter box. An air pump is provided to work in conjunction with the movable multi-stage exhaust unit. The first-stage exhaust pipe, the secondary exhaust pipe, and other structures in the multi-stage exhaust unit are responsible for collecting and initially guiding the smoke. The air pump enhances the pressure difference along the entire exhaust path. For example, when the exhaust fan draws the smoke to the exhaust joint, the air pump can more powerfully draw the smoke into the smoke exhaust filter box through the exhaust connecting pipe, ensuring that the smoke does not accumulate or flow back in the pipe, so that the function of the multi-stage exhaust system can be fully utilized.

[0013] This utility model provides a fume extraction assembly for argon arc welding of waste trucks. It has the following beneficial effects:

[0014] (1) This utility model forms a multi-stage exhaust channel through the design of a primary exhaust pipe, a secondary exhaust pipe I, and a secondary exhaust pipe II. The primary exhaust pipe can quickly collect a large amount of smoke near the welding area. Its internal primary ventilation screen can initially filter larger particulate impurities, preventing them from entering subsequent pipes or fans, and protecting components such as exhaust fans. The secondary exhaust pipe I and secondary exhaust pipe II further capture and guide the smoke that is not completely collected by the primary exhaust pipe. With the cooperation of the secondary ventilation screens on their respective inner walls, the smoke collection efficiency is further improved, thereby more comprehensively collecting the smoke generated by argon arc welding, reducing the residue of smoke in the waste removal vehicle's working area. The electric telescopic rod provides the possibility of adjusting the height of the exhaust hood. The universal wheel I, which is rotatably connected to the bottom outer wall of the electric telescopic rod, provides convenience for the horizontal movement of the entire movable multi-stage exhaust unit.

[0015] (2) This utility model uses a primary filter layer, a middle filter layer and a high filter layer. This multi-layer filtration structure can gradually and finely purify the argon arc welding fume delivered from the exhaust port, preventing it from entering subsequent stages and causing blockage or affecting the subsequent filtration effect. Each filter layer is slidably connected to the mounting groove, and the installation method is easy to operate through the sealing plate, positioning rod and other structures. When the filter layer has been used for a long time and its filtration effect has decreased to the point that it needs to be replaced, the operator can easily lift the sealing plate with the handle on the sealing plate, and then pull out the corresponding filter layer along the mounting groove for replacement. The positioning hole and positioning rod facilitate positioning and installation. Attached Figure Description

[0016] Figure 1 This is a frontal perspective view of the overall structure of this utility model;

[0017] Figure 2 This is a partial view of the movable multi-stage exhaust unit of this utility model;

[0018] Figure 3 This is a partial view of the exhaust fan of this utility model;

[0019] Figure 4 This is a partial view of the filter exhaust section of this utility model.

[0020] In the diagram: 1. Movable frame; 2. Fixed block; 3. Movable multi-stage exhaust unit; 311. Exhaust hood; 312. Exhaust and smoke vent connector; 313. Electric telescopic rod; 314. Casters I; 315. Primary exhaust pipe; 316. Secondary exhaust pipe I; 317. Secondary exhaust pipe II; 318. Mounting frame; 319. Exhaust fan; 3111. Secondary ventilation screen; 3112. Primary ventilation screen; 3113. Exhaust filter; 4. Filter and exhaust unit; 411. Movable base plate; 412. Exhaust pump; 413. Casters II; 414. Smoke vent filter box; 415. Sealed mounting top plate; 416. Positioning mounting hole; 417. Mounting groove; 418. Sealing plate; 419. High-grade filter layer; 4111. Primary filter layer; 4112. Intermediate filter layer; 4113. Positioning rod; 4114. Smoke inlet; 4115. Exhaust connecting pipe. 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] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0023] Example 1:

[0024] A preferred embodiment of the exhaust fume assembly for argon arc welding of waste trucks provided by this utility model is as follows: Figure 1-4 As shown: A fume extraction assembly for argon arc welding of waste trucks includes a movable frame 1, a movable multi-stage exhaust unit 3, and a filter exhaust unit 4. A fixing block 2 is fixedly installed on the top of the movable frame 1; the movable multi-stage exhaust unit 3 is arranged between the fixing blocks 2; and the filter exhaust unit 4 is arranged on one side of the movable frame 1.

[0025] The movable multi-stage exhaust unit 3 specifically includes: an exhaust hood 311, which is fixedly installed between the fixed blocks 2; an exhaust and smoke venting connector 312, which is equidistantly connected to the top of the exhaust hood 311; and an electric telescopic rod 313, which is installed at the bottom of the movable frame 1.

[0026] The telescopic end of the electric telescopic rod 313 is fixedly connected to the bottom outer wall of the movable frame 1, and the bottom outer wall of the electric telescopic rod 313 is rotatably connected to a universal wheel 314.

[0027] An exhaust filter 3113 is fixedly installed on the inner wall of the exhaust hood 311. A primary exhaust pipe 315, a secondary exhaust pipe 316, and a secondary exhaust pipe 317 are fixedly installed inside the exhaust hood 311. A mounting bracket 318 is fixedly installed on the inner wall of each of the primary exhaust pipe 315, the secondary exhaust pipe 316, and the secondary exhaust pipe 317. An exhaust fan 319 is fixedly installed on the outer wall of the mounting bracket 318.

[0028] Secondary ventilation screens 3111 are fixedly installed on the inner walls of secondary exhaust pipe 316 and secondary exhaust pipe 317. Primary ventilation screens 3112 are fixedly installed on the inner wall of primary exhaust pipe 315. Primary exhaust pipe 315, secondary exhaust pipe 316 and secondary exhaust pipe 317 are all connected to exhaust and smoke venting connector 312.

[0029] In this embodiment, the exhaust fan 319 is started, generating negative pressure in the area of ​​the exhaust hood 311. The welding fumes are collected by the exhaust hood 311 under the action of negative pressure. Large particles of impurities are first intercepted by the exhaust filter 3113. Then, the fumes enter the primary exhaust pipe 315, the secondary exhaust pipe 316, and the secondary exhaust pipe 317. Under the continuous action of the exhaust fan 319, after further filtration by the primary ventilation screen 3112 and the secondary ventilation screen 3111, the fumes are discharged through the exhaust vent connector 312. In the fumes transmission stage, the fumes discharged from the exhaust vent connector 312 enter the smoke inlet 4114 of the exhaust filter box 414 through the exhaust connecting pipe 4115. With the cooperation of the secondary ventilation screens on their respective inner walls, the fumes collection efficiency is further improved, thereby more comprehensively collecting the fumes generated by argon arc welding and reducing the residue of fumes in the waste removal vehicle working area.

[0030] Example 2:

[0031] Based on Embodiment 1, a preferred embodiment of the exhaust fume assembly for argon arc welding of waste trucks provided by this utility model is as follows: Figure 1-4 As shown: The filter exhaust unit 4 specifically includes: a movable base plate 411, which is set on one side of the movable frame 1; a universal wheel 413, which is rotatably connected to the bottom of the movable base plate 411; and an air pump 412, which is fixedly installed on the top outer wall of the movable base plate 411.

[0032] A smoke exhaust filter box 414 is fixedly installed on the top of the movable base plate 411. A sealing mounting top plate 415 is fixedly installed on the inner wall of the smoke exhaust filter box 414. The sealing mounting top plate 415 is provided with a mounting groove 417 and a positioning mounting hole 416. A positioning rod 4113 is engaged in the positioning mounting hole 416. A sealing plate 418 is fixedly installed on the top of the positioning rod 4113.

[0033] A handle is fixedly installed on the top of the sealing plate 418. A primary filter layer 4111, a secondary filter layer 4112, and a high-grade filter layer 419 are fixedly installed on the bottom outer wall of the sealing plate 418. The primary filter layer 4111, the secondary filter layer 4112, and the high-grade filter layer 419 are all slidably connected to the mounting groove 417. A smoke inlet 4114 is connected to the outer wall of the smoke exhaust filter box 414. Smoke exhaust connecting pipes 4115 are equidistantly connected to the outer wall of the smoke inlet 4114. The other end of the smoke exhaust connecting pipe 4115 is connected to the exhaust pipe 312. The suction end of the air pump 412 is connected to the smoke exhaust filter box 414.

[0034] In this embodiment, the sealing plate 418 is placed back on top of the smoke exhaust filter box 414, the positioning rod 4113 is aligned with the positioning mounting hole 416, and the sealing plate 418 is pressed down until the sealing plate 418 is completely attached to the sealing mounting top plate 415, forming a new sealing state to prevent smoke leakage. When the filter layer has been used for a long time and its filtration effect has decreased to the point that it needs to be replaced, the operator can easily lift the sealing plate with the handle on the sealing plate, and then pull out the corresponding filter layer along the mounting groove for replacement. The positioning hole and positioning rod facilitate positioning and installation.

[0035] Working Principle: Fume Hood 311: The fume hood 311 is fixedly installed between the fixed blocks 2 and is an important component for collecting welding fumes. Its position is fixed above the welding area of ​​the waste removal vehicle, effectively covering the welding points and preventing fume diffusion. Fume Exhaust Connectors 312: These connectors are equidistantly connected at the top of the fume hood 311. These connectors connect the exhaust duct and the fume vent, allowing fumes to be smoothly discharged from the fume hood 311 and enter the subsequent filtration and exhaust stage. Electric Telescopic Rod 313: Located at the bottom of the movable frame 1, the telescopic end of the electric telescopic rod 313 is fixedly connected to the bottom outer wall of the movable frame 1. A caster wheel 314 is rotatably connected to the bottom outer wall of the rod. The entire movable frame 1 can be adjusted by extending and retracting the electric telescopic rod 313. The height of the multi-stage exhaust unit 3 is adjusted to accommodate welding operations at different heights. Simultaneously, the installation of casters 314 facilitates the movement of the entire exhaust unit within the waste removal vehicle's working area, allowing for more flexible targeting of the welding fume source. During argon arc welding, the exhaust fan 319 of the movable multi-stage exhaust unit 3 is activated, generating negative pressure in the fume hood 311 area. Welding fumes are collected by the fume hood 311 under this negative pressure. Large particles are first intercepted by the exhaust filter 3113. Then, the fumes enter the primary exhaust duct 315, secondary exhaust duct 316, and secondary exhaust duct 317. Under the continuous action of the exhaust fan 319, the fumes are further filtered by the primary ventilation screen 3112 and the secondary ventilation screen 3111. Afterwards, the smoke is discharged through the exhaust vent 312. During the smoke transmission stage: the smoke discharged from the exhaust vent 312 enters the smoke inlet 4114 of the smoke filter box 414 through the exhaust connecting pipe 4115. During the filtration and exhaust stage: the suction pump 412 operates, causing the smoke entering the smoke filter box 414 to pass sequentially through the primary filter layer 4111, the intermediate filter layer 4112, and the advanced filter layer 419 for filtration. The primary filter layer 4111 removes larger particles and some smoke dust, the intermediate filter layer 4112 further filters smaller particles, and the advanced filter layer 419 purifies harmful gases and fine particles. The clean air after multiple layers of filtration is finally discharged from the outlet of the suction pump 412, completing the entire smoke exhaust and purification process. During the process, the movable multi-stage exhaust unit 3 can be adjusted in position via the electric telescopic rod 313 and the first universal wheel 314, while the filter exhaust unit 4 can be moved via the second universal wheel 413. The two work together to ensure effective smoke extraction during argon arc welding operations on scrap vehicles. When the filter layer needs to be replaced, the operation of the smoke extraction components must first be stopped to ensure the entire system is in a safe, power-free state. This prevents injury or disruption to the replacement operation due to the operation of equipment such as the exhaust pump 412 or the exhaust fan 319. By pushing the movable base plate 411 with the second universal wheel 413, the filter exhaust unit 4 is moved to a suitable operating position for easy operation of the smoke extraction filter box 414. The operator holds the handle at the top of the sealing plate 418 and lifts it upwards.The positioning rod 4113 at the bottom of the sealing plate 418 disengages from the positioning mounting hole 416 of the sealing mounting top plate 415, thereby opening the sealing plate 418 and exposing the primary filter layer 4111, the intermediate filter layer 4112, and the advanced filter layer 419. Since the primary filter layer 4111, the intermediate filter layer 4112, and the advanced filter layer 419 are all slidably connected to the mounting groove 417 on the sealing mounting top plate 415 inside the smoke exhaust filter box 414, the old filter layers can be pulled out sequentially along the mounting groove 417. During the extraction process, care should be taken to avoid scattering accumulated dust or impurities from the filter layers; a suitable collection container can be used to catch them from below. The sealing plate 418 is then placed back on top of the smoke exhaust filter box 414, aligning the positioning rod 4113 with the positioning mounting hole 416. The sealing plate 418 is then pressed down until it is completely fitted onto the sealing mounting top plate 415, re-sealing the filter and preventing smoke leakage.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0037] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A fume extraction assembly for argon arc welding of scrap vehicles, comprising a movable frame (1), a movable multi-stage exhaust unit (3), and a filter exhaust unit (4), characterized in that, The top of the mobile frame (1) is fixedly installed with a fixing block (2); the movable multi-stage exhaust unit (3) is arranged between the fixing blocks (2); the filter exhaust unit (4) is arranged on one side of the mobile frame (1).

2. The fume extraction assembly for argon arc welding of scrap vehicles according to claim 1, characterized in that, The movable multi-stage exhaust unit (3) specifically includes: The exhaust hood (311) is fixedly installed between the fixed blocks (2); The exhaust vent connector (312) is equidistantly connected to the top of the exhaust hood (311); An electric telescopic rod (313) is installed at the bottom of the mobile frame (1).

3. The exhaust fume assembly for argon arc welding of scrap vehicles according to claim 2, characterized in that, The telescopic end of the electric telescopic rod (313) is fixedly connected to the bottom outer wall of the movable frame (1), and a universal wheel (314) is rotatably connected to the bottom outer wall of the electric telescopic rod (313).

4. The exhaust fume assembly for argon arc welding of scrap vehicles according to claim 3, characterized in that, The inner wall of the fume hood (311) is fixedly equipped with a fume filter (3113). The interior of the fume hood (311) is fixedly equipped with a primary exhaust pipe (315), a secondary exhaust pipe one (316), and a secondary exhaust pipe two (317). The inner walls of the primary exhaust pipe (315), the secondary exhaust pipe one (316), and the secondary exhaust pipe two (317) are all fixedly equipped with mounting brackets (318). The outer wall of the mounting brackets (318) is fixedly equipped with an exhaust fan (319).

5. The exhaust fume assembly for argon arc welding of scrap vehicles according to claim 4, characterized in that, The inner walls of the secondary exhaust pipe 1 (316) and the secondary exhaust pipe 2 (317) are fixedly equipped with secondary ventilation screens (3111), and the inner wall of the primary exhaust pipe (315) is fixedly equipped with a primary ventilation screen (3112). The primary exhaust pipe (315), the secondary exhaust pipe 1 (316) and the secondary exhaust pipe 2 (317) are all connected to the exhaust and smoke connection (312).

6. The fume extraction assembly for argon arc welding of scrap vehicles according to claim 1, characterized in that, The filter exhaust section (4) specifically includes: A movable base plate (411) is set on one side of the movable frame (1); The second omnidirectional wheel (413) is rotatably connected to the bottom of the movable base plate (411); An air pump (412) is fixedly installed on the top outer wall of the movable base plate (411).

7. The fume extraction assembly for argon arc welding of scrap vehicles according to claim 6, characterized in that, A smoke exhaust filter box (414) is fixedly installed on the top of the movable base plate (411). A sealing mounting top plate (415) is fixedly installed on the inner wall of the smoke exhaust filter box (414). The sealing mounting top plate (415) is provided with a mounting groove (417) and a positioning mounting hole (416). A positioning rod (4113) is engaged in the positioning mounting hole (416). A sealing plate (418) is fixedly installed on the top of the positioning rod (4113).

8. The fume extraction assembly for argon arc welding of scrap vehicles according to claim 7, characterized in that, A handle is fixedly installed on the top of the sealing plate (418). A primary filter layer (4111), a secondary filter layer (4112), and a high-grade filter layer (419) are fixedly installed on the bottom outer wall of the sealing plate (418). The primary filter layer (4111), the secondary filter layer (4112), and the high-grade filter layer (419) are all slidably connected to the mounting groove (417). The outer wall of the smoke exhaust filter box (414) is connected to a smoke inlet (4114). The outer wall of the smoke inlet (4114) is equidistantly connected to a smoke exhaust connecting pipe (4115). The other end of the smoke exhaust connecting pipe (4115) is connected to a ventilation and smoke exhaust connector (312). The suction end of the suction pump (412) is connected to the smoke exhaust filter box (414).

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