A smoke purification device for underwater dry welding equipment

Abstract

The utility model provides a kind of underwater dry-method welding equipment smoke purification device, it is related to underwater welding auxiliary equipment technical field, including absorption tank and support, the absorption tank is installed above inside the support, the fan is equipped in the below of inside the support;The absorption tank includes outer layer, primary filter cotton, middle filter cotton and inner layer, the primary filter cotton is located at the inboard of outer layer, the middle filter cotton is located at the inboard of primary filter cotton, the inner layer is located at the inboard of middle filter cotton, the hole is equipped in the outer layer and inner layer, the inboard of inner layer is connected with fan;The utility model passes through fan forced drive closed space airflow circulation, fast dilution smoke concentration;Again through the hierarchical filtering structure of outer layer, primary filter cotton, middle filter cotton, inner layer composition, accurately remove the key smoke dust particles that influence camera field of view, ensure that welding process can be monitored in real time, avoid the operation interruption caused by smoke shielding, significantly improve welding work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of underwater welding auxiliary equipment technology, and in particular to a fume purification device for underwater dry welding equipment. Background Technology

[0002] In deep-sea underwater operations, robotic underwater dry welding is a key construction process. This welding method must be carried out in a closed high-pressure environment of ≥3MPa to ensure welding quality and operational safety. During the welding process, a large amount of fumes with diameters ranging from 0.1µm to 10µm are rapidly generated. Among them, fumes larger than 1µm tend to accumulate quickly, forming visual obstructions. This makes it impossible for welding monitoring cameras to clearly capture the welding process, directly affecting the precise control of welding operations and the continuity of work. Currently, the industry lacks fume purification devices specifically designed for this high-pressure, high-salinity marine environment. Most rely on conventional dust removal structures used in land or shallow water welding, or depend on natural airflow in enclosed spaces for fume diffusion. Conventional dust removal devices have filter structures that cannot accurately intercept critical fume particles larger than 1µm, resulting in excessive airflow resistance, low purification efficiency, and an inability to quickly eliminate visual obstruction from camera equipment, leading to welding interruptions or quality control issues. Furthermore, some devices are bulky, occupying limited enclosed space around the welding equipment, and have poor mobility, making it difficult to meet the actual operational needs of underwater dry welding equipment. Therefore, this utility model proposes a fume purification device for underwater dry welding equipment to solve the problems existing in the prior art. Summary of the Invention

[0003] To address the aforementioned problems, this utility model proposes an underwater dry welding equipment fume purification device. This device uses a fan to force airflow circulation within a sealed space, rapidly diluting the fume concentration. Then, through a graded filtration structure consisting of an outer layer, primary filter cotton, intermediate filter cotton, and an inner layer, key fume particles that affect the camera's field of vision are precisely removed, ensuring real-time monitoring of the welding process, avoiding work interruptions caused by fume obstruction, and significantly improving welding efficiency.

[0004] To achieve the purpose of this utility model, the utility model is implemented through the following technical solution: a fume purification device for underwater dry welding equipment, including an absorption tank and a support, wherein the absorption tank is installed at the top inside the support, and a fan is provided at the bottom inside the support; The absorption tank includes an outer layer, a primary filter cotton, a secondary filter cotton, and an inner layer. The primary filter cotton is located inside the outer layer, the secondary filter cotton is located inside the primary filter cotton, and the inner layer is located inside the secondary filter cotton. Both the outer and inner layers have holes, and the fan communicates with the inner side of the inner layer.

[0005] A further improvement is that the absorption tank is provided with a top cover, and a handle is provided at the middle position of the top of the top cover.

[0006] A further improvement is that the top cover and the outer side of the absorption tank are fixed together by buckles, and three sets of buckles are provided at equal angles around the center of the top cover.

[0007] A further improvement is that the lower part of the outer side of the absorption tank is fixed to the support by threads, and a silicone rubber ring is provided between the bottom of the absorption tank and the support.

[0008] A further improvement is that a connecting bracket is provided below the inner hole of the bracket, and an adapter is provided on the fan. The adapter and the connecting bracket are fixed together by pan head screws and nuts, and a spring washer is provided between the nut and the connecting bracket.

[0009] A further improvement is that: both ends of one side of the bracket are provided with support frames, and the support frames are provided with mounting holes.

[0010] Further improvements are made as follows: the outer layer is made of 316 stainless steel plate and serves as external support and to block foreign objects ≥2mm; the primary filter cotton is used to filter and adsorb particles in welding fumes larger than 5um; the intermediate filter cotton is used to filter and adsorb particles in welding fumes larger than 1um; the inner layer serves as structural support for the primary and intermediate filter cottons, and the inner layer is a cylindrical or pleated structure.

[0011] The beneficial effects of this utility model are as follows: 1. This utility model uses a fan to force airflow circulation in a closed space, which quickly dilutes the concentration of smoke and dust. Then, through a graded filtration structure consisting of an outer layer, a primary filter cotton, a middle filter cotton, and an inner layer, key smoke and dust particles that affect the camera's field of vision are precisely removed, ensuring that the welding process can be monitored in real time, avoiding work interruptions caused by smoke and dust obscuring the view, and significantly improving welding efficiency.

[0012] 2. This utility model achieves sealing through a silicone rubber ring between the absorption tank and the support, and with the addition of salt-resistant and cold-resistant stainless steel, it can resist the erosion of the high-salt and low-temperature marine environment; with the watertight electrical connector socket using rubber molded plug sealing and tapered thread installation, it can stably withstand high pressure ≥MPa, avoid water and air leakage, and ensure long-term stable operation of the equipment in the high-pressure environment of the deep sea.

[0013] 3. The overall design of this utility model is small and compact. Through the support frame and mounting holes on one side of the bracket, it can be quickly disassembled and fixed to various dry welding equipment without occupying too much enclosed space, making it suitable for the narrow working environment of underwater welding equipment.

[0014] 4. The top cover of the absorption tank of this utility model is fixed by three sets of buckles and can be quickly opened with the handle, facilitating the replacement of the primary and secondary filter cotton. Both types of filter cotton are readily available, significantly reducing maintenance difficulty and operating costs. Meanwhile, the inner layer adopts a cylindrical or pleated structure, which increases the filtration area, reduces airflow resistance, and prevents localized deformation of the filter cotton due to uneven air pressure, extending the service life of the filter components and further improving the economy and practicality of the device. 5. This utility model can be fixed to the welding equipment through the mounting holes of the support frame. The fan is firmly connected to the connecting frame through pan head screws, spring washers, and nuts. The overall assembly process is simple, without complicated debugging, and can be put into operation quickly, reducing the labor intensity of on-site construction. Attached Figure Description

[0015] Figure 1 This is the front view of the present invention; Figure 2 This is a schematic diagram of the internal structure of the absorption tank of this utility model; Figure 3 This is a schematic diagram of the internal structure of the bracket of this utility model; Figure 4 This is a schematic diagram of the support frame of this utility model.

[0016] The components are: 1. Absorption tank; 2. Support frame; 3. Fan; 4. Outer layer; 5. Primary filter cotton; 6. Secondary filter cotton; 7. Inner layer; 8. Holes; 9. Top cover; 10. Handle; 11. Buckle; 12. Silicone rubber ring; 13. Connecting frame; 14. Pan head screw; 15. Spring washer; 16. Nut; 17. Support frame. Detailed Implementation

[0017] To deepen the understanding of this utility model, the following detailed description will be provided in conjunction with embodiments. These embodiments are only used to explain this utility model and do not constitute a limitation on the scope of protection of this utility model. Example 1

[0018] according to Figure 1 , 2 As shown in Figures 3 and 4, this embodiment proposes a fume purification device for underwater dry welding equipment, including an absorption tank 1 and a support 2. The absorption tank 1 is installed at the top inside the support 2, and a fan 3 is provided at the bottom inside the support 2. The absorption tank 1 includes an outer layer 4, a primary filter cotton 5, a secondary filter cotton 6, and an inner layer 7. The primary filter cotton 5 is located inside the outer layer 4, the secondary filter cotton 6 is located inside the primary filter cotton 5, and the inner layer 7 is located inside the secondary filter cotton 6. Both the outer layer 4 and the inner layer 7 have holes 8. The fan 3 connects to the inner side of the inner layer 7. The bracket 2 provides installation support for the entire device. The absorption tank 1 serves as the core carrier for dust filtration. After the fan 3 is started, it generates negative pressure driving force, which drives the dust-laden gas in the sealed high-pressure environment into the absorption tank 1 through the holes 8 of the outer layer 4. The gas is then passed through the primary filter cotton 5 and the secondary filter cotton 6 for graded interception. The holes 8 of the inner layer 7 ensure smooth airflow and provide structural support for the filter cotton. Finally, the purified gas is discharged through the fan 3. This method effectively removes dust particles larger than 1μm, avoids obstruction of camera equipment, and is suitable for underwater operation environments with pressures ≥3MPa.

[0019] The absorption tank 1 is provided with a top cover 9, and a handle 10 is provided at the middle position of the top of the top cover 9. The top cover 9 provides a sealing and protection function for the primary filter cotton 5 and the intermediate filter cotton 6 inside the absorption tank 1, preventing foreign objects from entering or air leakage under high pressure. The handle 10 provides a convenient gripping point for opening and closing the top cover 9, facilitating quick disassembly and assembly for replacement and maintenance of the filter cotton.

[0020] The upper cover 9 and the outer side of the absorption tank 1 are fixed together by buckles 11, and three sets of buckles 11 are arranged at equal angles around the center of the upper cover 9. The three sets of buckles 11 distributed at equal angles can apply a uniform locking force to the upper cover 9, ensuring that the upper cover 9 and the absorption tank 1 fit tightly together, ensuring the internal sealing performance of the absorption tank 1, avoiding air leakage under high pressure that would affect the purification efficiency, and at the same time, the connection method of the buckles 11 facilitates quick unlocking and improves the convenience of filter cotton replacement.

[0021] The absorption tank 1 is fixed to the support 2 at its lower outer side by threads, and a silicone rubber ring 12 is provided between the bottom of the absorption tank 1 and the support 2. The threaded connection ensures a stable assembly of the absorption tank 1 and the support 2, ensuring that the connection between the two does not loosen under high pressure. The silicone rubber ring 12 fills the gap between the two, forming a reliable sealing barrier to prevent seawater from seeping into the device and damaging the components. At the same time, the silicone rubber ring 12's salt corrosion resistance and cold resistance are suitable for marine operating environments.

[0022] A connecting bracket 13 is provided below the inner hole of the bracket 2, and an adapter is provided on the fan 3. The adapter and the connecting bracket 13 are fixed together by a pan head screw 14 and a nut 16. A spring washer 15 is provided between the nut 16 and the connecting bracket 13. The connecting bracket 13 provides a precise installation support point for the fan 3. The pan head screw 14 and the nut 16 cooperate to achieve a tight connection between the fan 3 adapter and the connecting bracket 13. The spring washer 15 plays a role in preventing loosening, avoiding loosening of the connection due to vibration during underwater operation, and ensuring stable operation of the fan 3 to continuously provide a large flow rate of airflow driving force of ≥710m³ / h.

[0023] Both ends of one side of the bracket 2 are provided with support frames 17, and the support frames 17 are provided with mounting holes. The support frames 17 serve as the connection carrier between the device and the underwater dry welding equipment. The entire device can be quickly fixed to the welding equipment through the mounting holes, realizing the coordinated deployment of the two. Moreover, the compact support structure does not occupy too much enclosed space, improving the mobility and adaptability of the device in confined and high-pressure environments. Example 2

[0024] according to Figure 1 , 2 As shown in Figures 3 and 4, this embodiment proposes a fume purification device for underwater dry welding equipment, including an absorption tank 1 and a support 2. The absorption tank 1 is installed at the top inside the support 2, and a fan 3 is provided at the bottom inside the support 2. The absorption tank 1 includes an outer layer 4, a primary filter cotton 5, a secondary filter cotton 6, and an inner layer 7. The primary filter cotton 5 is located inside the outer layer 4, the secondary filter cotton 6 is located inside the primary filter cotton 5, and the inner layer 7 is located inside the secondary filter cotton 6. Both the outer layer 4 and the inner layer 7 have holes 8. The fan 3 connects to the inner side of the inner layer 7. The bracket 2 provides installation support for the entire device. The absorption tank 1 serves as the core carrier for dust filtration. After the fan 3 is started, it generates negative pressure driving force, which drives the dust-laden gas in the sealed high-pressure environment into the absorption tank 1 through the holes 8 of the outer layer 4. The gas is then passed through the primary filter cotton 5 and the secondary filter cotton 6 for graded interception. The holes 8 of the inner layer 7 ensure smooth airflow and provide structural support for the filter cotton. Finally, the purified gas is discharged through the fan 3. This method effectively removes dust particles larger than 1μm, avoids obstruction of camera equipment, and is suitable for underwater operation environments with pressures ≥3MPa.

[0025] The absorption tank 1 is provided with a top cover 9, and a handle 10 is provided at the middle position of the top of the top cover 9. The top cover 9 provides a sealing and protection function for the primary filter cotton 5 and the intermediate filter cotton 6 inside the absorption tank 1, preventing foreign objects from entering or air leakage under high pressure. The handle 10 provides a convenient gripping point for opening and closing the top cover 9, facilitating quick disassembly and assembly for replacement and maintenance of the filter cotton.

[0026] The outer layer 4 is made of 316 stainless steel plate and serves as external support and to block foreign objects ≥2mm in size. The primary filter cotton 5 is used to filter and adsorb particles in welding fumes larger than 5µm. The intermediate filter cotton 6 is used to filter and adsorb particles in welding fumes larger than 1µm. The inner layer 7 provides structural support for the primary filter cotton 5 and the intermediate filter cotton 6, and the inner layer 7 is a cylindrical or pleated structure. The 316 stainless steel material of the outer layer 4 combines salt corrosion resistance, low temperature resistance, and structural strength, providing external support and blocking foreign objects ≥2mm in size through the holes 8 to prevent filter cotton clogging. The primary filter cotton 5 first intercepts particles larger than 5µm, reducing the load on the intermediate filter cotton 6 and extending its service life. The intermediate filter cotton 6 precisely intercepts key dust particles larger than 1µm, solving the camera obstruction problem. The cylindrical or pleated structure of the inner layer 7 increases the filtration area, reduces airflow resistance, and provides stable support for the primary filter cotton 5 and the intermediate filter cotton 6, preventing deformation of the filter cotton due to uneven air pressure.

[0027] The fume purification device of this underwater dry welding equipment achieves a seal through a silicone rubber ring 12 between the absorption tank 1 and the support 2. Combined with salt-resistant and cold-resistant 316 stainless steel, it can withstand the corrosion of the high-salt and low-temperature marine environment. Equipped with a watertight electrical connector socket featuring a rubber-molded plug seal and tapered thread installation, it can stably withstand ≥3MPa high pressure, preventing water and air leaks and ensuring long-term stable operation of the equipment in the high-pressure environment of the deep sea. Furthermore, a fan 3 forces airflow circulation within the sealed space, rapidly diluting the fume concentration. The fume is then filtered through a graded filtration structure consisting of an outer layer 4, primary filter cotton 5, intermediate filter cotton 6, and inner layer 7, precisely removing key fume particles that affect the camera's field of vision. This ensures real-time monitoring of the welding process, preventing work interruptions due to fume obstruction and significantly improving welding efficiency. Simultaneously, the overall design is compact and easy to install and remove from various dry welding equipment via the support frame 17 and mounting holes on one side of the support 2, without occupying excessive sealed space, making it suitable for the confined working environment of underwater welding equipment. In addition, the top cover 9 of the absorption tank 1 is secured by three sets of buckles 11 and can be quickly opened with the handle 10, facilitating the replacement of the primary filter cotton 5 and the intermediate filter cotton 6. Both types of filter cotton are readily available, significantly reducing maintenance difficulty and operating costs. Meanwhile, the inner layer 7 adopts a cylindrical or pleated structure, which increases the filtration area, reduces airflow resistance, and prevents localized deformation of the filter cotton due to uneven air pressure, extending the service life of the filter components and further improving the economy and practicality of the device. Finally, the device can be fixed to the welding equipment through the mounting holes of the support frame 17. The fan 3 is securely connected to the connecting frame 13 via pan head screws 14, spring washers 15, and nuts 16. The overall assembly process is simple, requiring no complex adjustments, and can be quickly put into operation, reducing the labor intensity of on-site construction.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A fume purification device for underwater dry welding equipment, comprising an absorption tank (1) and a support (2), characterized in that: The absorption tank (1) is installed above the inside of the bracket (2), and a fan (3) is provided below the inside of the bracket (2). The absorption tank (1) includes an outer layer (4), a primary filter cotton (5), a secondary filter cotton (6), and an inner layer (7). The primary filter cotton (5) is located inside the outer layer (4), the secondary filter cotton (6) is located inside the primary filter cotton (5), and the inner layer (7) is located inside the secondary filter cotton (6). Both the outer layer (4) and the inner layer (7) are provided with holes (8). The fan (3) is connected to the inner side of the inner layer (7).

2. The fume purification device for underwater dry welding equipment according to claim 1, characterized in that: The absorption tank (1) is provided with a top cover (9), and a handle (10) is provided at the middle position of the top of the top cover (9).

3. The fume purification device for underwater dry welding equipment according to claim 2, characterized in that: The outer side of the top cover (9) and the absorption tank (1) are fixed by buckles (11), and the buckles (11) are provided in three sets at equal angles around the center of the top cover (9).

4. The fume purification device for underwater dry welding equipment according to claim 1, characterized in that: The absorption tank (1) is fixed to the support (2) by threads on the lower side of the outside. A silicone rubber ring (12) is provided between the bottom of the absorption tank (1) and the support (2).

5. The fume purification device for underwater dry welding equipment according to claim 1, characterized in that: The bracket (2) has a connecting frame (13) below its inner hole. The fan (3) has an adapter. The adapter and the connecting frame (13) are fixed together by a pan head screw (14) and a nut (16). A spring washer (15) is provided between the nut (16) and the connecting frame (13).

6. The fume purification device for underwater dry welding equipment according to claim 1, characterized in that: The bracket (2) has support frames (17) at both ends on one side, and the support frames (17) have mounting holes.

7. The fume purification device for underwater dry welding equipment according to claim 1, characterized in that: The outer layer (4) is made of 316 stainless steel plate and is used as external support and to block foreign objects ≥2mm; the primary filter cotton (5) is used to filter and adsorb particles in welding fumes greater than 5um; the intermediate filter cotton (6) is used to filter and adsorb particles in welding fumes greater than 1um; the inner layer (7) is used for structural support of the primary filter cotton (5) and the intermediate filter cotton (6), and the inner layer (7) is a cylindrical body or a pleated structure.

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