A welding dust extraction and purification device

Abstract

This utility model discloses a welding dust extraction and purification device, including a purifier and a fume extraction pipe. A connecting pipe is installed at one end of the fume extraction pipe, and an air inlet hood is provided at the bottom of the connecting pipe. An annular opening is provided on the outer side of the connecting pipe, and several connecting rods are installed on the inner wall of the annular opening. An inner ring hood is rotatably connected to the bottom of the air inlet hood, and a bent pipe is installed at the bottom of the inner ring hood. A through hole corresponding to the bent pipe is opened at the bottom of the inner ring hood, and a rotating ring is installed at one end of the bent pipe, the rotating ring corresponding to the position of the annular opening. Through the rotational adjustment of the inner ring hood and the cooperative structure of the bent pipe, rotating ring, and annular opening, the deficiency of weak suction at the outer opening of traditional air inlet hoods is overcome, ensuring that metal debris will not slip due to insufficient suction. This effectively collects various pollutants generated during welding, ensuring the normal operation of welding work, protecting the health of operators, and meeting environmental emission standards.

Description

Technical Field

[0001] This utility model relates to the field of dust collection and purification technology, specifically a welding dust collection and purification device. Background Technology

[0002] Welding operations generate a large amount of pollutants, including fumes, harmful gases, and metal particles. These pollutants not only contaminate the workshop air but also seriously endanger the health of operators. Furthermore, they must meet national air pollutant emission standards. Therefore, welding dust extraction and purification devices are indispensable environmental protection equipment in welding operations. However, in practical applications, existing devices have significant technical shortcomings: to ensure coverage of a certain welding area for collecting pollutants, the air intake hood is usually designed with a large opening. However, this design results in the suction force being effective at the connection between the air intake hood and the pipe, but significantly weakening at the outer opening. When metal debris generated during welding splashes into the interior of the air intake hood, the insufficient suction at the outer opening fails to effectively draw the debris into the pipe, causing it to slide off inside the hood and fall back onto the workbench, the welded workpiece, or the tools, affecting the normal progress of the welding work.

[0003] Therefore, this utility model provides a welding dust extraction and purification device. Utility Model Content

[0004] In view of the shortcomings of the existing technology, this utility model provides a welding dust collection and purification device to solve the above problems.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a welding dust extraction and purification device, comprising a purifier and a fume extraction pipe, wherein a connecting pipe is installed at one end of the fume extraction pipe, an air inlet hood is provided at the bottom of the connecting pipe, an annular opening is provided on the outer side of the connecting pipe, a plurality of connecting rods are installed on the inner wall of the annular opening, an inner ring cover is rotatably connected to the bottom of the air inlet hood, a bent pipe is installed at the bottom of the inner ring cover, a through hole corresponding to the bent pipe is opened at the bottom of the inner ring cover, and a rotating ring is installed at one end of the bent pipe, the rotating ring corresponding to the position of the annular opening.

[0006] Preferably, two limiting rings are installed on the side wall of the connecting pipe, and the rotating ring is rotatably connected between the two limiting rings. Both ends of the rotating ring are provided with a damping coating to increase the friction between it and the limiting rings.

[0007] Preferably, a connecting ring is installed at the top of the inner ring cover, and the connecting ring is rotatably connected to the inner wall of the air intake cover.

[0008] Preferably, two scrapers are provided between the inner ring cover and the air intake cover, and both scrapers are rotatably connected to the inner side of the inner ring cover.

[0009] Preferably, a rotating rod is provided inside the air intake shroud, and three fan blades and two drive rods are installed on the side wall of the rotating rod. One end of each of the two drive rods is respectively installed on the top of the corresponding scraper.

[0010] Preferably, a support ring is rotatably connected to the outer side of the rotating rod, and support rods are installed on both sides of the support ring, with both support rods installed inside the inner ring cover.

[0011] Beneficial effects

[0012] Compared with the prior art, the present invention has the following advantages:

[0013] This invention overcomes the weakness of traditional air intake hoods by adjusting the rotation of the inner ring cover and the combination of the bent tube, rotating ring and annular opening. It ensures that metal debris will not slip due to insufficient suction, thereby effectively collecting various pollutants generated during welding, ensuring the normal progress of welding work, protecting the health of operators and meeting environmental emission standards. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0015] Figure 2 This is an enlarged cross-sectional structural diagram of the connecting pipe in this utility model;

[0016] Figure 3 This is the utility model Figure 2 A magnified view of the structure at point A in the middle;

[0017] Figure 4 This is the utility model Figure 2 A magnified schematic diagram of the structure at point B in the middle.

[0018] In the diagram: 1. Purifier; 11. Suction pipe; 2. Connecting pipe; 21. Air intake hood; 22. Annular opening; 221. Connecting rod; 23. Limiting ring; 3. Inner ring cover; 31. Bend; 32. Rotating ring; 33. Connecting ring; 34. Scraper; 4. Rotating rod; 41. Fan blade; 42. Drive rod; 43. Support ring; 44. Support rod. Detailed Implementation

[0019] 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.

[0020] Please see Figure 1-4 A welding dust extraction and purification device includes a purifier 1 and a smoke extraction pipe 11. A connecting pipe 2 is installed at one end of the smoke extraction pipe 11. An air inlet hood 21 is provided at the bottom of the connecting pipe 2. An annular opening 22 is provided on the outer side of the connecting pipe 2. Several connecting rods 221 are installed on the inner wall of the annular opening 22. An inner ring cover 3 is rotatably connected to the bottom of the air inlet hood 21. A bent pipe 31 is installed at the bottom of the inner ring cover 3. A through hole corresponding to the bent pipe 31 is opened at the bottom of the inner ring cover 3. A rotating ring 32 is installed at one end of the bent pipe 31. The rotating ring 32 corresponds to the position of the annular opening 22.

[0021] Specifically, after the purifier 1 is started, it generates negative pressure, forming a suction field through the smoke pipe 11 and connecting pipe 2. The air intake hood 21 is used to collect welding fumes, harmful gases, and metal particles over a wide area. At the same time, the inner ring hood 3 can rotate relative to the air intake hood 21. The curved pipe 31 at its bottom, in conjunction with the rotating ring 32 and the annular opening 22, can adjust the distribution and guidance of the suction. The connecting pipe 2 applies suction to the inside of the inner ring hood 3 through the annular opening 22 and the curved pipe 31. When pollutants generated from welding gather towards the air intake hood 21, not only can the strong suction at the connection between the air intake hood 21 and the connecting pipe 2 capture the pollutants, but the rotation of the inner ring hood 3 also adjusts the suction between the curved pipe 31 and the annular opening 22. The combination of 22 can also enhance the suction at the outer opening of the air intake hood, so that metal debris splashed into the inner space of the air intake hood can be intercepted between the inner ring hood 3 and the air intake hood 21. Then, the metal debris is sucked into the bent pipe 31, and then enters the purifier 1 through the connecting pipe 2 and the smoke pipe 11 to complete the filtration and purification. Through the rotation adjustment of the inner ring hood 3 and the cooperation structure of the bent pipe 31, the rotating ring 32 and the annular opening 22, the defect of weak suction at the outer opening of the traditional air intake hood is made up for, ensuring that metal debris will not slip due to insufficient suction, thereby effectively collecting various pollutants generated by welding, ensuring the normal operation of welding work, protecting the health of operators and meeting environmental emission standards.

[0022] In one embodiment of this utility model, such as Figures 1-4 As shown, two limiting rings 23 are installed on the side wall of the connecting pipe 2, and the rotating ring 32 is rotatably connected between the two limiting rings 23. Both ends of the rotating ring 32 are provided with damping coatings to increase the friction between it and the limiting rings 23.

[0023] Specifically, the two limiting rings 23 on the side wall of the connecting pipe 2 provide rotational support for the rotating ring 32. The damping coating at both ends of the rotating ring 32 increases the friction between it and the limiting rings 23, so that the rotating ring 32 can remain stable after being adjusted to a suitable angle and will not rotate arbitrarily.

[0024] In one embodiment of this utility model, such as Figures 1-4 As shown, a connecting ring 33 is installed at the top of the inner ring cover 3, and the connecting ring 33 is rotatably connected to the inner wall of the air intake cover 21.

[0025] Specifically, the connecting ring 33 at the top of the inner ring cover 3 is rotatably connected to the inner wall of the air intake cover 21, providing a stable rotational support structure for the inner ring cover 3, allowing the inner ring cover 3 to rotate flexibly within the air intake cover 21, thereby adjusting the angle and position of the bent pipe 31 and the rotating ring 32.

[0026] In one embodiment of this utility model, such as Figures 1-4 As shown, two scrapers 34 are provided between the inner ring cover 3 and the air intake cover 21, and both scrapers 34 are rotatably connected to the inner side of the inner ring cover 3.

[0027] Specifically, the scraping action of the scraper 34 can promptly remove metal debris that may be stuck between the inner ring cover 3 and the air intake cover 21. At the same time, the scraped debris can be sucked into the bend pipe 31, avoiding the impact of debris accumulation on the suction force of the air intake cover. This prevents debris from getting stuck, ensuring the continuity of welding operations and the effectiveness of contaminant collection.

[0028] In one embodiment of this utility model, such as Figures 1-4 As shown, a rotating rod 4 is provided inside the air intake shroud 21. Three fan blades 41 and two drive rods 42 are installed on the side wall of the rotating rod 4. One end of each drive rod 42 is installed on the top of the corresponding scraper 34.

[0029] Specifically, when the purifier 1 starts and generates negative pressure, the airflow enters the connecting pipe 2 through the air intake hood 21. The airflow drives the three fan blades 41 on the side wall of the rotating rod 4 inside the air intake hood 21 to rotate. The fan blades 41 drive the rotating rod 4 to rotate synchronously. Since two drive rods 42 are also installed on the side wall of the rotating rod 4, and one end of the drive rod 42 is connected to the top of the corresponding scraper 34, the rotating rod 4 transmits power through the drive rods 42, causing the two scrapers 34 to perform scraping action relative to the gap area between the inner ring cover 3 and the air intake hood 21. Automatic scraping of the scraper 34 can be achieved without an additional power source.

[0030] In one embodiment of this utility model, such as Figures 1-4 As shown, a support ring 43 is rotatably connected to the outer side of the rotating rod 4, and support rods 44 are installed on both sides of the support ring 43. Both support rods 44 are installed inside the inner ring cover 3.

[0031] Specifically, the support ring 43, which is rotatably connected to the outer side of the rotating rod 4, is fixedly connected to the inner side of the inner ring cover 3 through the support rods 44 installed on both sides, forming a stable support structure for the rotating rod 4. When the airflow drives the fan blades 41 on the rotating rod 4 to rotate, causing the rotating rod 4 to rotate as a whole, the support ring 43 remains fixed, allowing the rotating rod 4 to rotate smoothly only on its inner side. This prevents the rotating rod 4 from shifting or shaking due to high-speed rotation or uneven force, ensuring the stable operation of the linkage structure between the rotating rod 4, the drive rod 42, and the scraper 34.

[0032] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0033] Working principle: After the purifier 1 is started, it generates negative pressure, which forms a suction field through the smoke pipe 11 and the connecting pipe 2. The air intake hood 21 is used to collect welding fumes, harmful gases and metal particles over a wide area. The top of the inner ring cover 3 is rotatably connected to the inner wall of the air intake hood 21 through the connecting ring 33, which can flexibly adjust the angle. Its bottom bend 31 corresponds to the outer annular opening 22 of the connecting pipe 2. The two limiting rings 23 on the side wall of the connecting pipe 2 support the rotating ring 32, and the damping coating at both ends of the rotating ring 32 makes it stable after the angle is adjusted. By rotating the inner ring cover 3, the bend 31 and the annular opening 22 cooperate to enhance the suction of the outer opening of the air intake hood and prevent metal debris from slipping due to insufficient suction. Simultaneously, when the airflow enters, it drives the fan blades 41 on the inner rotating rod 4 of the air intake hood 21 to rotate. The rotating rod 4 is stably supported by the outer support ring 43 and the support rod 44. Its rotation drives the scraper 34 between the inner ring cover 3 and the air intake hood 21 through the drive rod 42 to scrape and clean the metal debris stuck in the gap in time. The scraped debris and other pollutants enter the purifier 1 through the bend pipe 31, the connecting pipe 2, and the smoke pipe 11 to complete the filtration and purification, realize the efficient collection of pollutants, and ensure the normal operation of welding work.

[0034] 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.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A welding dust extraction and purification device, comprising a purifier (1) and a fume extraction pipe (11), characterized in that, A connecting pipe (2) is installed at one end of the smoking pipe (11). An air intake hood (21) is provided at the bottom of the connecting pipe (2). An annular opening (22) is provided on the outside of the connecting pipe (2). Several connecting rods (221) are installed on the inner wall of the annular opening (22). An inner ring cover (3) is rotatably connected to the bottom of the air intake hood (21). A bent pipe (31) is installed at the bottom of the inner ring cover (3). A through hole corresponding to the bent pipe (31) is opened at the bottom of the inner ring cover (3). A rotating ring (32) is installed at one end of the bent pipe (31). The rotating ring (32) is positioned corresponding to the annular opening (22).

2. The welding dust extraction and purification device according to claim 1, characterized in that, The connecting pipe (2) has two limiting rings (23) installed on its side wall. The rotating ring (32) is rotatably connected between the two limiting rings (23). Both ends of the rotating ring (32) are provided with damping coatings to increase the friction between it and the limiting rings (23).

3. The welding dust extraction and purification device according to claim 2, characterized in that, A connecting ring (33) is installed at the top of the inner ring cover (3), and the connecting ring (33) is rotatably connected to the inner wall of the air intake cover (21).

4. The welding dust extraction and purification device according to claim 3, characterized in that, Two scrapers (34) are provided between the inner ring cover (3) and the air intake cover (21), and both scrapers (34) are rotatably connected to the inner side of the inner ring cover (3).

5. The welding dust extraction and purification device according to claim 4, characterized in that, The air intake shroud (21) is provided with a rotating rod (4) on its inner side. The rotating rod (4) has three fan blades (41) and two drive rods (42) installed on its side wall. One end of each of the two drive rods (42) is installed on the top of the corresponding scraper (34).

6. The welding dust extraction and purification device according to claim 5, characterized in that, The outer side of the rotating rod (4) is rotatably connected to a support ring (43), and support rods (44) are installed on both sides of the support ring (43). Both support rods (44) are installed inside the inner ring cover (3).

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