A welding fume emission purification device

Abstract

This utility model relates to the technical field of welding fume purification equipment, specifically disclosing a welding fume emission purification device, including a housing. The housing contains a filtration mechanism for filtering welding fumes; the housing also contains a spray dust suppression mechanism for spraying and suppressing welding fumes. The filtration mechanism includes a first partition and a second partition installed within the housing, dividing the housing into a first chamber, a second chamber, and a third chamber. A primary filter is installed in the first chamber, and a secondary filter is installed in the second chamber. This device can reduce air pollution by efficiently capturing and purifying fumes generated during welding, reducing the amount of fumes emitted into the atmosphere, improving surrounding air quality, and helping to meet stricter atmospheric environmental quality standards, thus playing a positive role in environmental protection.

Description

Technical Field

[0001] This utility model relates to the technical field of welding fume purification equipment, and in particular to a welding fume emission purification device. Background Technology

[0002] Welding operations generate a large amount of welding fumes; the background technology includes the following points:

[0003] I. Causes

[0004] During welding, welding materials such as welding rods and welding wires undergo physical and chemical changes such as melting and evaporation under high temperatures, producing numerous tiny particles. These particles mix with the surrounding air to form welding fumes. Different welding methods, such as common manual arc welding, gas shielded welding, submerged arc welding, and automatic open arc welding, all generate large amounts of fumes to varying degrees. Furthermore, factors such as welding materials and welding parameters also affect the amount and composition of the fumes generated.

[0005] II. Regarding the hazards

[0006] Welding fumes contain various harmful substances, such as iron oxide, manganese oxide, and fluorides. If directly released into the air, they can damage the respiratory and cardiovascular systems of workers, causing health problems such as coughing, asthma, and even pneumoconiosis. Furthermore, emissions into the external environment cause air pollution, affecting surrounding air quality and failing to meet environmental protection requirements.

[0007] III. Limitations of Existing Purification Methods and Devices

[0008] 1. Traditional ventilation methods: These simply exhaust the smoke-laden air outdoors without actually treating the smoke. They merely transfer the pollution and cannot fundamentally solve the environmental problems.

[0009] 2. Filter-type purification device: Although it can intercept some smoke and dust particles through the filter, the filter is easy to clog and needs to be replaced or cleaned frequently, which increases the operation and maintenance costs and workload. In addition, the filtration effect on some small-diameter smoke and dust particles is limited.

[0010] 3. Electrostatic purification equipment: It removes smoke and dust by relying on the principle of electrostatic adsorption. The initial purification efficiency is acceptable, but the equipment cost is high. After long-term use, the electrodes are prone to adsorbing dust and other impurities, which leads to a decrease in adsorption effect. Regular maintenance of the electrodes is required to ensure purification performance.

[0011] Therefore, there is an urgent need to develop more efficient, economical, and easy-to-maintain methods and devices for purifying welding fume emissions to improve the current situation. Thus, in order to solve this problem, a welding fume emission purification device and method are proposed. Utility Model Content

[0012] The purpose of this invention is to address the shortcomings of existing technologies by proposing a welding fume emission purification device.

[0013] To achieve the above objectives, the present invention adopts the following technical solution:

[0014] A welding fume emission purification device includes a housing, and a filtration mechanism for filtering welding fumes is provided inside the housing;

[0015] The housing is equipped with a spray dust suppression mechanism for spraying welding fumes.

[0016] The filtration mechanism includes a first partition and a second partition installed inside the housing, which divide the housing into a first chamber, a second chamber, and a third chamber. A primary filter is installed in the first chamber, a secondary filter is installed in the second chamber, and a high-grade filter is installed in the third chamber. The first chamber is connected to an air inlet port. A first opening is provided on the side of the first partition, located above the primary and secondary filters. A second opening is provided on the side of the second partition, located below the secondary and high-grade filters. The third chamber is connected to an exhaust port.

[0017] Preferably, the spray dust suppression mechanism includes a water tank installed on the side of the housing, the water tank being connected to a first water pipe, a first water pump being installed inside the first water pipe, and atomizing nozzles being installed on the top walls of the first chamber, the second chamber, and the third chamber, with the first water pipe being connected to the three atomizing nozzles respectively.

[0018] Preferably, two support rods are symmetrically installed on the top of the housing. A pipe support is installed at the top of the support rod, and a spray pipe is installed at the top of the pipe support. The spray pipe is connected to three connecting pipes, all of which are inserted into the housing and are respectively connected to three atomizing nozzles.

[0019] Preferably, the exhaust port is inclined upward, and a return water pipe is connected to the bend of the exhaust port, which is connected to the water tank.

[0020] Preferably, a water collection tank is installed at the bottom of the shell, and the first chamber, the second chamber and the third chamber are all connected to the water collection tank. A filter screen is installed inside the water collection tank, an activated carbon adsorption layer is provided on top of the filter screen, and a sand and gravel filter layer is provided on top of the activated carbon adsorption layer. The water collection tank is connected to the water tank.

[0021] Preferably, the first chamber, the second chamber, and the third chamber are all connected to the water collection tank through water inlets, and electronic valves are installed in the water inlets.

[0022] Preferably, the water collection tank is connected to a second water pipe, the connection between the second water pipe and the water collection tank is located below the filter screen, a second water pump is installed inside the second water pipe, and the end of the second water pipe is connected to the water tank.

[0023] Preferably, the bottom of the water collection tank is equipped with a base plate, and two sets of fixing rods are symmetrically installed on the top of the base plate, with the top of the fixing rods installed at the bottom of the shell.

[0024] Preferably, a support plate is installed on the side of the housing away from the water tank, a suction fan is installed on the top of the support plate, the suction end of the suction fan is connected to a corrugated pipe, the corrugated pipe is connected to a suction hood, and the air outlet end of the suction fan is connected to the air inlet port.

[0025] Compared with the prior art, the beneficial effects of this utility model are:

[0026] I. Environmental benefits

[0027] 1. Reduce air pollution: It can efficiently capture and purify the fumes generated during welding, reduce the amount of fumes emitted into the atmosphere, improve the surrounding air quality, help meet stricter air quality standards, and play a positive role in environmental protection.

[0028] 2. Complies with environmental regulations: Welding fumes are purified to ensure that pollutants emitted during welding operations are within the prescribed limits, helping enterprises achieve green and sustainable development.

[0029] II. Health Protection

[0030] 1. Protect workers: Effectively removes harmful substances contained in welding fumes, such as heavy metal particles and harmful chemicals, reducing the chances of workers inhaling these harmful substances, protecting their respiratory and cardiovascular systems, and reducing the occurrence of occupational diseases such as pneumoconiosis and respiratory inflammation.

[0031] 2. Improved working environment: The purified air improves the air quality of the entire welding site, creating a relatively comfortable and healthy working environment, and increasing the comfort and satisfaction of the workers.

[0032] III. Economic Benefits

[0033] 1. Reduce operation and maintenance costs: By adopting reasonable filter recycling and efficient purification methods, the need for frequent filter replacement and high-frequency equipment maintenance can be reduced, saving manpower, material resources and financial costs, and saving expenses for enterprises in the long run.

[0034] 2. Improve production efficiency: Stable and efficient purification equipment eliminates the need for frequent shutdowns for maintenance, allowing welding operations to proceed continuously and smoothly. This reduces production interruptions caused by fume and dust disposal issues, helping to improve overall production efficiency and increase enterprise output and profits.

[0035] IV. Equipment Performance Advantages

[0036] 1. Stable and reliable operation: This device can adapt to different welding processes and different dust generation conditions, and has strong applicability and durability.

[0037] 2. Excellent purification effect: This device can effectively capture and remove smoke and dust particles of different sizes, ensuring the cleanliness of the exhaust air and meeting the purification needs of various scenarios. Attached Figure Description

[0038] Figure 1 This is a first-view structural schematic diagram of a welding fume emission purification device proposed in this utility model.

[0039] Figure 2 This is a second-view structural schematic diagram of a welding fume emission purification device proposed in this utility model.

[0040] Figure 3 This is a third-view structural schematic diagram of a welding fume emission purification device proposed in this utility model.

[0041] Figure 4 This is a partial cross-sectional view of the housing of a welding fume emission purification device proposed in this utility model;

[0042] Figure 5 This is a schematic diagram showing the connection between the shell and the water collection tank of a welding fume emission purification device proposed in this utility model;

[0043] Figure 6 This is a partial cross-sectional view of the water collection tank of a welding fume emission purification device proposed in this utility model;

[0044] Figure 7 This is a schematic diagram showing the connection between the shell and the first partition plate of a welding fume emission purification device proposed in this utility model.

[0045] In the diagram: 1. Shell; 2. Water tank; 3. First water pipe; 4. First water pump; 5. Spray pipe; 6. Connecting pipe; 7. Support rod; 8. Pipe support; 9. Exhaust port; 10. Water collection tank; 11. Second water pipe; 12. Second water pump; 13. Base plate; 14. Fixing rod; 15. Return water pipe; 16. Air inlet port; 17. Support plate; 18. Fan; 19. Corrugated pipe; 20. Suction hood; 21. Primary filter; 22. Intermediate filter; 23. Advanced filter; 24. First opening; 25. Second opening; 26. First partition; 27. Second partition; 28. Atomizing nozzle; 29. ​​Water collection port; 30. Filter screen; 31. Activated carbon adsorption layer; 32. Sand and gravel filter layer. Detailed Implementation

[0046] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0047] Reference Figure 1-7 A welding fume emission purification device includes a housing 1, and a filter mechanism for filtering welding fumes is provided inside the housing 1.

[0048] The housing 1 is equipped with a spray dust suppression mechanism for spraying welding fumes.

[0049] The filtration mechanism includes a first partition 26 and a second partition 27 installed inside the housing 1. The first partition 26 and the second partition 27 divide the housing 1 into a first chamber, a second chamber, and a third chamber. A primary filter 21 is installed in the first chamber, a secondary filter 22 is installed in the second chamber, and a high-grade filter 23 is installed in the third chamber. The first chamber is connected to an air inlet port 16. A first opening 24 is provided on the side of the first partition 26, which is located above the primary filter 21 and the secondary filter 22. A second opening 25 is provided on the side of the second partition 27, which is located below the secondary filter 22 and the high-grade filter 23. The third chamber is connected to an exhaust port 9.

[0050] As a technical optimization of this utility model, the spray dust suppression mechanism includes a water tank 2 installed on the side of the housing 1. The water tank 2 is connected to a first water pipe 3. A first water pump 4 is installed inside the first water pipe 3. Atomizing nozzles 28 are installed on the top walls of the first chamber, the second chamber and the third chamber. The first water pipe 3 is connected to the three atomizing nozzles 28 respectively. The first water pump 4 can easily draw water from the water tank 2 into the first water pipe 3 and spray it out through the atomizing nozzles 28.

[0051] As a technical optimization of this utility model, two support rods 7 are symmetrically installed on the top of the shell 1. A pipe support 8 is installed at the top of the support rod 7. A spray pipe 5 is installed at the top of the pipe support 8. The spray pipe 5 is connected to three connecting pipes 6. The three connecting pipes 6 are all inserted into the shell 1 and are respectively connected to three atomizing nozzles 28. The connecting pipes 6 can facilitate the introduction of water in the spray pipe 5 into the atomizing nozzles 28 and spray it out through the atomizing nozzles 28.

[0052] As a technical optimization of this utility model, the end of the exhaust port 9 is inclined upward, and the bend of the exhaust port 9 is connected to the return water pipe 15, which is connected to the water tank 2.

[0053] As a technical optimization of this utility model, a water collection tank 10 is installed at the bottom of the shell 1. The first chamber, the second chamber, and the third chamber are all connected to the water collection tank 10. A filter screen 30 is installed inside the water collection tank 10. An activated carbon adsorption layer 31 is set on the top of the filter screen 30. A sand and gravel filter layer 32 is set on the top of the activated carbon adsorption layer 31. The water collection tank 10 is connected to the water tank 2. A two-stage filtration method combining the activated carbon adsorption layer 31 and the sand and gravel filter layer 32 is adopted. The sand and gravel filter layer 32 is 10-15 cm thick, and the activated carbon adsorption layer 31 is 5-10 cm thick. This effectively removes suspended solids and some dissolved impurities in the water entering the water collection tank 10, ensuring that the circulating water quality meets the spraying requirements.

[0054] As a technical optimization of this utility model, the first chamber, the second chamber and the third chamber are all connected to the water collection tank 10 through the water collection port 29, and an electronic valve is installed in the water collection port 29.

[0055] As a technical optimization of this utility model, the water collection tank 10 is connected to a second water pipe 11. The connection between the second water pipe 11 and the water collection tank 10 is located below the filter screen 30. A second water pump 12 is installed inside the second water pipe 11, and the end of the second water pipe 11 is connected to the water tank 2.

[0056] As a technical optimization of this utility model, a base plate 13 is installed at the bottom of the water collection tank 10, and two sets of fixing rods 14 are symmetrically installed on the top of the base plate 13. The top of the fixing rods 14 is installed at the bottom of the shell 1. The base plate 13 can provide support for this device, and the fixing rods 14 can facilitate the connection between the shell 1 and the base plate 13.

[0057] As a technical optimization of this utility model, a support plate 17 is installed on the side of the shell 1 away from the water tank 2. A suction fan 18 is installed on the top of the support plate 17. The suction end of the suction fan 18 is connected to a corrugated pipe 19. The corrugated pipe 19 is connected to a suction hood 20. The air outlet of the suction fan 18 is connected to the air inlet port 16. The suction hood 20 is a rectangular or circular open-type suction hood. The area of ​​the hood opening is determined according to the size of the welding station. Generally, the area of ​​the suction hood opening used for a single welding station should be 0.5-1.5 square meters. The height of the hood opening from the welding point is maintained at 0.3-0.5 meters to ensure that the welding fumes can be collected to the maximum extent. The suction hood 20 is made of stainless steel with a thickness of 1-2 mm to ensure that it is sturdy and corrosion resistant.

[0058] The primary filter 21 in this utility model is a coarse metal filter with a mesh size of 5-10 mm. It mainly intercepts large particles of debris and some larger particles of smoke and dust. The frame of the primary filter 21 is made of aluminum alloy, and its size is adapted to the internal space of the shell 1. Generally, the length is 0.8-1.2 meters and the width is 0.6-1 meter.

[0059] The intermediate filter 22 in this utility model uses a medium-efficiency polyester fiber filter with a filtration accuracy of 1-5 microns. It has a good interception effect on medium-sized dust particles, with a filter area of ​​1-2 square meters and a thickness of 5-10 millimeters.

[0060] The advanced filter 23 in this utility model is a high-efficiency glass fiber filter with a filtration accuracy of 0.3-1 micrometer, ensuring a high capture rate of fine dust particles. Its area is 0.8-1.5 square meters and its thickness is 3-5 millimeters.

[0061] A method of using a welding fume emission purification device, the method comprising the following steps:

[0062] S1. Smoke and dust collection: Install the suction hood 20 above the welding fumes and dust, start the suction fan 18, and then draw the welding fumes and dust into the housing 1.

[0063] S2, Filtration: Welding fumes entering the housing 1 first enter the first chamber and are filtered by the primary filter 21. The welding fumes filtered by the primary filter 21 enter the second chamber and are filtered by the intermediate filter 22. The welding fumes filtered by the intermediate filter 22 enter the third chamber and are filtered by the advanced filter 23.

[0064] S3, Spraying Dust Suppression: Start the first water pump 4, the first water pump 4 draws water from the water tank 2 into the first water pipe 3 and sprays it out through the atomizing nozzle 28. The atomized water sprayed by the atomizing nozzle 28 adsorbs and condenses the dust particles in the welding fumes in the first chamber, the second chamber and the third chamber and forms dust particles to settle. In addition, the atomized water sprayed by the atomizing nozzle 28 can rinse the primary filter screen 21, the intermediate filter screen 22 and the advanced filter screen 23.

[0065] S4. Recycling and Drainage Treatment: The atomized water sprayed from the atomizing nozzle 28 adsorbs the welding fume particles in the welding fume and settles on the bottom wall of the first chamber, the second chamber and the third chamber. It then flows into the water collection tank 10 through the water collection port 29. The water containing welding fume is filtered by the filter screen 30, the activated carbon adsorption layer 31 and the sand and gravel filter layer 32 in the water collection tank 10. The filtered water is then pumped back into the water tank 2 by the second water pump 12.

[0066] S5. Purified emission: Welding fumes filtered by primary filter 21, intermediate filter 22 and advanced filter 23 are emitted through exhaust port 9.

[0067] When using this utility model:

[0068] Fume Collection: Install the suction hood 20 above the welding fumes, start the suction fan 18, and the suction fan 18 can adsorb and collect the welding fumes through the suction hood 20. The welding fumes generated during welding are then adsorbed and collected into the suction hood 20. The welding fumes entering the suction hood 20 can then enter the suction fan 18 through the corrugated pipe 19. The welding fumes in the suction fan 18 can then enter the air inlet 16 through the air outlet of the suction fan 18. The welding fumes entering the air inlet 16 can then enter the first chamber inside the housing 1.

[0069] Filtration: Welding fumes entering the housing 1 first enter the first chamber and are filtered by the primary filter 21. After being filtered by the primary filter 21, the welding fumes enter the second chamber and are filtered by the intermediate filter 22. After being filtered by the intermediate filter 22, the welding fumes enter the third chamber and are filtered by the advanced filter 23. The welding fumes can be filtered step by step by the primary filter 21, intermediate filter 22 and advanced filter 23, so that the harmful substances contained in the welding fumes can be filtered out step by step, and the welding fumes can be initially purified.

[0070] Dust suppression by spray: While filtering and purifying welding fumes using primary filter 21, intermediate filter 22, and advanced filter 23, the first water pump 4 is activated. The first water pump 4 draws water from the water tank 2 into the first water pipe 3. The water entering the first water pipe 3 then enters the spray pipe 5, which in turn flows through the connecting pipe 6 into the atomizing nozzle 28. The atomized water sprayed from the atomizing nozzle 28 adsorbs and condenses the welding fumes in the first, second, and third chambers, causing the fumes to settle. Furthermore, the atomized water sprayed from the atomizing nozzle 28 can effectively filter the primary filter 21, intermediate filter 22, and advanced filter 23. The primary filter 23 is rinsed; the atomized water sprayed from the atomizing nozzle 28 is sprayed onto the primary filter 21, intermediate filter 22, and advanced filter 23, as well as the first chamber, second chamber, and third chamber. On the one hand, it can adsorb and agglomerate the finer dust particles that have passed through the primary filter 21, intermediate filter 22, and advanced filter 23 but have not been intercepted, making them larger particles that are easier to settle later. On the other hand, it can wash away the dust that has been intercepted on the primary filter 21, intermediate filter 22, and advanced filter 23, prevent the primary filter 21, intermediate filter 22, and advanced filter 23 from clogging, and maintain the good air permeability and filtration performance of the primary filter 21, intermediate filter 22, and advanced filter 23.

[0071] Recycling and Drainage Treatment: The atomized water sprayed from the atomizing nozzle 28 adsorbs welding fume particles and settles on the bottom walls of the first, second, and third chambers. It then flows into the water collection tank 10 through the water collection port 29. The water containing welding fume is filtered by the filter screen 30, activated carbon adsorption layer 31, and sand and gravel filter layer 32 in the water collection tank 10. The filtered water is then pumped back into the water tank 2 by the second water pump 12.

[0072] After purification, the welding fumes filtered by the primary filter 21, the intermediate filter 22 and the advanced filter (23) are discharged through the exhaust port 9. The end of the exhaust port 9 is set to bend upward. When the exhaust port 9 discharges the purified welding fumes and atomized water, the atomized water can be blocked at the bend of the exhaust port 9, and then condense at the bend of the exhaust port 9. The condensed water can then flow back to the water tank 2 through the return water pipe 15 for recycling.

[0073] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A welding fume emission purification device, comprising a housing (1), characterized in that, The housing (1) is provided with a filter mechanism for filtering welding fumes; The housing (1) is provided with a spray dust suppression mechanism for spraying welding fumes. The filtration mechanism includes a first partition (26) and a second partition (27) installed inside the housing (1). The first partition (26) and the second partition (27) divide the housing (1) into a first chamber, a second chamber and a third chamber. A primary filter (21) is installed in the first chamber, a secondary filter (22) is installed in the second chamber and a high-grade filter (23) is installed in the third chamber. The first chamber is connected to an air inlet port (16). A first opening (24) is opened on the side of the first partition (26) and is located above the primary filter (21) and the secondary filter (22). A second opening (25) is opened on the side of the second partition (27) and is located below the secondary filter (22) and the high-grade filter (23). The third chamber is connected to an exhaust port (9).

2. The welding fume emission purification device according to claim 1, characterized in that, The spray dust suppression mechanism includes a water tank (2) installed on the side of the housing (1), the water tank (2) is connected to a first water pipe (3), a first water pump (4) is installed in the first water pipe (3), and atomizing nozzles (28) are installed on the top walls of the first chamber, the second chamber and the third chamber respectively. The first water pipe (3) is connected to the three atomizing nozzles (28) respectively.

3. The welding fume emission purification device according to claim 2, characterized in that, Two support rods (7) are symmetrically installed on the top of the housing (1). A pipe support (8) is installed at the top of the support rod (7). A spray pipe (5) is installed at the top of the pipe support (8). The spray pipe (5) is connected to three connecting pipes (6). All three connecting pipes (6) are inserted into the housing (1) and are respectively connected to three atomizing nozzles (28).

4. The welding fume emission purification device according to claim 2, characterized in that, The exhaust port (9) is tilted upward at one end, and a return water pipe (15) is connected to the bend of the exhaust port (9). The return water pipe (15) is connected to the water tank (2).

5. The welding fume emission purification device according to claim 2, characterized in that, A water collection tank (10) is installed at the bottom of the shell (1). The first chamber, the second chamber and the third chamber are all connected to the water collection tank (10). A filter screen (30) is installed inside the water collection tank (10). An activated carbon adsorption layer (31) is provided on the top of the filter screen (30). A sand and gravel filter layer (32) is provided on the top of the activated carbon adsorption layer (31). The water collection tank (10) is connected to the water tank (2).

6. The welding fume emission purification device according to claim 5, characterized in that, The first chamber, the second chamber and the third chamber are all connected to the water collection tank (10) through the water collection port (29), and an electronic valve is installed in the water collection port (29).

7. The welding fume emission purification device according to claim 5, characterized in that, The water collection tank (10) is connected to a second water pipe (11). The connection between the second water pipe (11) and the water collection tank (10) is located below the filter screen (30). A second water pump (12) is installed inside the second water pipe (11). The end of the second water pipe (11) is connected to the water tank (2).

8. The welding fume emission purification device according to claim 5, characterized in that, The bottom of the water collection tank (10) is equipped with a base plate (13), and two sets of fixing rods (14) are symmetrically installed on the top of the base plate (13). The top of the fixing rods (14) is installed at the bottom of the shell (1).

9. The welding fume emission purification device according to claim 2, characterized in that, A support plate (17) is installed on the side of the housing (1) away from the water tank (2). A suction fan (18) is installed on the top of the support plate (17). The suction end of the suction fan (18) is connected to a corrugated pipe (19). The corrugated pipe (19) is connected to a suction hood (20). The air outlet of the suction fan (18) is connected to the air inlet port (16).

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