Workshop welding fume dust removal system

By introducing a multi-stage filtration and dehumidification structure into the welding fume system in the workshop, the problem of poor dust removal effect in the existing technology has been solved, achieving efficient dust removal and dehumidification, and improving the air quality and production safety in the workshop.

CN121314291APending Publication Date: 2026-01-13南通远洋船舶配套有限公司
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Patent Information

Application Number
CN202511769869.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-11-28
Publication Date
2026-01-13

AI Technical Summary

Technical Problem

The existing dust removal system for welding fumes in workshops has insufficient dust removal and dehumidification capabilities for exhaust air, failing to effectively protect worker health and environmental quality.

Method used

It adopts a multi-stage filtration and dehumidification structure, including a smoke inlet duct, a smoke exhaust duct, multiple filtration channels and a dehumidification channel. It uses a smoke guide fan and a suction and exhaust fan to accelerate the flow of smoke, and removes particulate matter and moisture from the smoke through multiple filter screens and dehumidification layers.

Benefits of technology

It significantly improved dust removal efficiency and environmental quality, protected worker health and production safety, avoided wasting ground space, and enhanced the workshop's air purification capabilities.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention relates to the technical field of dust removal, and discloses a workshop welding fume dust removal system which comprises a smoke inlet pipeline, a smoke suction channel, a first filter channel, a second filter channel, a third filter channel, a dehumidification channel, an air suction channel and an air outlet channel which are connected in sequence, welding fume with dust enters from the smoke inlet pipeline, and clean air is discharged from the air outlet channel. A smoke guide fan is arranged in the smoke suction channel and accelerates inflow of air in the smoke inlet pipeline, an air suction and exhaust fan is arranged in the air suction channel and accelerates exhaust of air in the air outlet channel, the device is provided with a plurality of filtering structures, smoke with dust is filtered thoroughly, a dehumidification structure is arranged, moisture in filtered gas is removed, water vapor in a workshop is reduced, and the environment is protected. The environment quality of a workshop is improved, production safety is guaranteed, the device can be hung on the upper portion of the workshop in a targeted mode, ground space waste and influence on normal operation of the workshop can be well avoided, and space resource waste can be avoided to the maximum extent.
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Description

Technical Field

[0001] This invention relates to the field of dust removal, and in particular to a workshop welding fume dust removal system. Background Technology

[0002] Welding fumes in workshops may contain metal oxides, harmful gases, and inhalable particulate matter. Long-term exposure can lead to respiratory diseases (welder's pneumoconiosis, asthma), nervous system damage (manganese poisoning), and carcinogenic risks (hexavalent chromium and nickel compounds). Therefore, workshop welding fume removal systems are needed to collect, filter, and purify the harmful fumes and gases generated during the welding process, protect workers' occupational health, meet environmental regulations, and improve workshop air quality.

[0003] Patent application CN219767159U discloses a wet low-resistance dust removal system for welding fumes in a container manufacturing workshop. The system includes a welding fume collection assembly and a dust collector connected by pipelines. The container manufacturing welding workshop is equipped with several first welding torch groups, several second welding torch groups, and several third welding torch groups, with the number of welding torches in each group increasing sequentially. The welding fume collection assembly includes several smoke extraction pipes, several smoke extraction hoods, and several smoke extraction chambers. Each welding torch in the first welding torch groups is equipped with a smoke extraction pipe, with one end of the pipe having a smoke extraction port close to the welding head of the torch, and the other end connected to the air inlet of the dust collector via a pipeline. Each second welding torch group is equipped with a corresponding smoke extraction hood, positioned above the group and connected to the air inlet via a pipeline. Each third welding torch group is equipped with a corresponding smoke extraction chamber, with each welding torch in the third group located within the chamber.

[0004] The existing technology has room for improvement in both dust removal and dehumidification of the exhaust air.

[0005] Therefore, a new technical solution is needed to solve the above-mentioned technical problems. Summary of the Invention

[0006] The purpose of this invention is to provide a workshop welding fume removal system. By setting up a multi-stage filtration structure, the system can effectively filter out dusty fumes. In addition, the dehumidification structure removes moisture from the filtered gas, reducing water vapor in the workshop, improving the environmental quality of the workshop, and ensuring production safety.

[0007] The technical solution adopted in this invention is: The workshop welding fume removal system includes a series of interconnected flues, which are in the form of an inlet pipe, a smoke inlet duct, a first filter duct, a second filter duct, a third filter duct, a dehumidification duct, an intake duct, and an exhaust duct. Welding fumes carrying dust enter through the inlet pipe, and clean air is discharged through the exhaust duct. A smoke guide fan is installed in the smoke inlet duct to accelerate the inflow of air into the smoke inlet pipe, and an exhaust fan is installed in the intake duct to accelerate the discharge of air from the exhaust duct.

[0008] By adopting the above structure, during use, the suction force generated by the smoke guide fan leads the flue gas to the smoke inlet duct. After being filtered through multiple subsequent filter channels, clean air that meets environmental standards is obtained. The clean air is then dehumidified by the dehumidification duct and then led to the exhaust duct by the exhaust fan. It is then discharged through the exhaust pipe of the exhaust duct. The multiple filter channels greatly increase the filtration efficiency and dust removal effect of this device. In addition, the dehumidification structure can remove moisture from the filtered gas, reduce water vapor in the workshop, improve the environmental quality of the workshop, and ensure production safety.

[0009] Preferably, the bottom of the smoke inlet duct is connected to the smoke inlet pipe, the air outlet at the rear end of the smoke inlet duct and the smoke guide fan are arranged alternately, and the air outlet of the smoke guide fan in the smoke inlet duct is provided with a smoke guide pipe.

[0010] By adopting the above structure, the suction force generated by the smoke guide fan can increase the speed at which flue gas enters the smoke inlet duct, thereby improving efficiency.

[0011] Preferably, the rear end of the smoke duct is sequentially connected to the first filter duct, the second filter duct, and the third filter duct, and each connection point is provided with an installation partition. Inside the first filter duct, an installation fixing sleeve is connected to the installation partition, and a filter screen is installed inside the installation fixing sleeve. Multiple sets of installation fixing sleeves and filter screens are provided inside the first filter duct.

[0012] Preferably, a mounting sleeve is provided in the second filter channel and connected to the mounting partition, and a filter screen is provided in the mounting sleeve. The number of mounting sleeves and filter screens in the second filter channel is less than the number in the first filter channel.

[0013] Preferably, a mounting and fixing flue is provided in the third filter channel and connected to the mounting partition, and a filter screen is installed in the mounting and fixing flue.

[0014] By adopting the above structure and setting up multiple continuous filter channels, the filtration efficiency and dust removal effect of this device are greatly increased.

[0015] Preferably, the dehumidification channel is provided with a dehumidification layer, and the number of dehumidification layers is more than two. The dehumidification layer is composed of aluminum fins and is installed on the mounting base below. The mounting base is connected to a drain pipe extending to the outside of the dehumidification channel. The upper surface of the mounting base slopes downward from the four sides towards the drain pipe, so that sewage can be discharged from the drain pipe during use.

[0016] By adopting the above structure, the dehumidification structure can remove moisture from the filtered gas, reduce water vapor in the workshop, improve the environmental quality of the workshop, and ensure production safety.

[0017] Preferably, the air intake fan inside the intake duct is covered with an exhaust duct, and the exhaust duct is equipped with an exhaust pipe.

[0018] Compared with the prior art, the present invention has the following advantages: 1. The device of this invention filters dusty flue gas through a multi-stage filtration structure, and removes moisture from the filtered gas through a dehumidification structure, reducing water vapor in the workshop, improving the environmental quality of the workshop, and ensuring production safety. This device can be specifically suspended in the upper part of the workshop, which can effectively avoid wasting ground space and affecting normal workshop operations, and can also minimize the waste of space resources.

[0019] 2. The arrangement of multiple continuous filter channels in the device of the present invention greatly increases the filtration efficiency and dust removal effect.

[0020] 3. The dehumidification structure of the device of the present invention can remove moisture from the filtered gas, reduce water vapor in the workshop, improve the environmental quality of the workshop, and ensure production safety. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the structure of the present invention; Figure 3 This is a schematic diagram of the filter channel of the present invention; Figure 4 This is a schematic diagram of the dehumidification channel of the present invention.

[0022] The components are as follows: 1. Smoke inlet duct; 2. Smoke duct; 3. First filter channel; 4. Second filter channel; 5. Third filter channel; 6. Dehumidification channel; 7. Intake channel; 8. Exhaust channel; 9. Smoke guide fan; 10. Smoke inlet pipe; 11. Smoke guide pipe; 12. Installing partition; 13. Installing fixing sleeve; 14. Filter screen; 15. Installing fixing smoke pipe; 16. Dehumidification layer; 17. Installing chassis; 18. Intake and exhaust fan; 19. Exhaust duct; 20. Exhaust pipe; 21. Sewage pipe. Detailed Implementation

[0023] like Figure 1-4As shown, the workshop welding fume removal system includes sequentially connected flues: an inlet duct 1, an intake duct 2, a first filter duct 3, a second filter duct 4, a third filter duct 5, a dehumidification duct 6, an intake duct 7, and an exhaust duct 8. Welding fumes carrying dust enter through the inlet duct 1, and clean air exits through the exhaust duct 8. An intake fan 9 is installed in the intake duct 2 to accelerate the inflow of air into the inlet duct 1. An exhaust fan 18 is installed in the intake duct 7 to accelerate the expulsion of air from the exhaust duct 8. An exhaust duct 19 is fitted over the exhaust fan 18 in the intake duct 7, and an exhaust pipe 20 is installed in the exhaust duct 8. The device effectively filters dust-laden fumes through multiple filtration structures, and the dehumidification structure removes moisture from the filtered gas, reducing water vapor in the workshop, improving environmental quality, and ensuring production safety. This device can be strategically installed in the upper part of the workshop, effectively avoiding wasted ground space and disruption to normal operations, while also minimizing the waste of space resources.

[0024] The bottom of the smoke inlet duct 1 is connected to the smoke inlet pipe 10. The air outlet at the rear end of the smoke inlet duct 1 is alternately arranged with the smoke guide fan 9. The air outlet of the smoke guide fan 9 in the smoke inlet duct 2 is equipped with a smoke guide pipe 11. The suction force generated by the smoke guide fan 9 can increase the speed at which the flue gas enters the smoke inlet duct 10, thereby improving efficiency.

[0025] The rear end of the smoke duct 2 is sequentially connected to the first filter duct 3, the second filter duct 4, and the third filter duct 5. Each connection point is equipped with a mounting baffle 12. Inside the first filter duct 3, a mounting sleeve 13 is connected to the mounting baffle 12, and a filter screen 14 is installed within the mounting sleeve 13. Multiple sets of mounting sleeves 13 and filter screens 14 are provided within the first filter duct 3. Inside the second filter duct 4, a mounting sleeve 13 is connected to the mounting baffle 12, and a filter screen 14 is installed within the mounting sleeve 13. The number of combinations of mounting sleeves 13 and filter screens 14 in the second filter duct 4 is less than that in the first filter duct 3. Ventilation openings are provided on the mounting baffles 12 at the front end of the first and second filter ducts 3 and 4, communicating with the rear mounting sleeves 13. Inside the third filter duct 5, a mounting pipe 15 is connected to the mounting baffle 12, and a filter screen 14 is installed within the mounting pipe 15. The arrangement of multiple continuous filter channels greatly increases the filtration efficiency and dust removal effect of this device. The mounting partition 12 is equipped with a ventilation port, which is connected to the rear mounting and fixing flue 15.

[0026] The dehumidification duct 6 is equipped with dehumidification layers 16, more than two sets of which are composed of aluminum fins. These layers are mounted on a mounting base 17. A drain pipe 21 extending to the outside of the dehumidification duct 6 is connected to the mounting base 17. The upper surface of the mounting base 17 slopes downwards from all four sides towards the drain pipe 21, facilitating the discharge of wastewater during use. This dehumidification structure removes moisture from the filtered air, reduces water vapor in the workshop, improves the environmental quality of the workshop, and ensures production safety.

[0027] When this device is in use, welding fumes are drawn into the inlet duct 10 by the suction generated by the fume guide fan 9. The fumes are then filtered sequentially through the first filter channel 3, the second filter channel 4, and the third filter channel 5, resulting in clean air that meets environmental standards. The air then passes through the dehumidification layer 16 in the dehumidification duct 6 to remove moisture. Finally, the air is drawn out of the device by the suction generated by the exhaust fan 18 in the intake duct 7 and discharged through the outlet pipe 20 in the outlet duct 8. After a period of use, the first filter channel 3, the second filter channel 4, and the third filter channel 5 can be removed separately to clean away any accumulated dust, thus improving the filtration effect. This device, through its multi-stage filtration structure, effectively filters dusty fumes. The dehumidification structure removes moisture from the filtered air, reducing humidity in the workshop, improving environmental quality, and ensuring production safety. This device can be strategically installed in the upper part of the workshop, effectively avoiding wasted ground space and disruption to normal operations, while also minimizing the waste of space resources.

[0028] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should be included within the scope of protection defined by the claims of the present invention.

Claims

1. A workshop welding fume extraction system, comprising sequentially connected fume ducts, characterized in that: The flue consists of an inlet pipe, an intake pipe, a first filter pipe, a second filter pipe, a third filter pipe, a dehumidification pipe, an intake pipe, and an exhaust pipe. Welding fumes with dust enter through the inlet pipe, and clean air is discharged through the exhaust pipe. A smoke guide fan is installed in the intake pipe to accelerate the inflow of air into the inlet pipe, and an exhaust fan is installed in the intake pipe to accelerate the discharge of air from the exhaust pipe.

2. The workshop welding fume removal system according to claim 1, characterized in that: The bottom of the smoke inlet duct is connected to the smoke inlet pipe, and the air outlet at the rear end of the smoke inlet duct is alternately arranged with the smoke guide fan. The air outlet of the smoke guide fan in the smoke inlet duct is equipped with a smoke guide pipe.

3. The workshop welding fume removal system according to claim 1, characterized in that: The rear end of the smoke duct is sequentially connected to the first filter duct, the second filter duct, and the third filter duct. Each connection point is provided with a mounting partition. Inside the first filter duct, a mounting fixing sleeve is connected to the mounting partition. A filter screen is installed inside the mounting fixing sleeve. Multiple sets of mounting fixing sleeves and filter screens are provided inside the first filter duct.

4. The workshop welding fume removal system according to claim 3, characterized in that: The second filter channel is connected to the mounting partition and is equipped with a mounting sleeve. A filter screen is installed inside the mounting sleeve. The number of mounting sleeves and filter screens in the second filter channel is less than the number in the first filter channel.

5. The workshop welding fume removal system according to claim 4, characterized in that: The third filter channel is connected to the mounting partition and a fixed flue is provided, and a filter screen is installed inside the fixed flue.

6. The workshop welding fume removal system according to claim 1, characterized in that: The dehumidification channel is equipped with a dehumidification layer, and there are more than two sets of dehumidification layers. The dehumidification layer is composed of aluminum fins and is installed on the mounting base below. The mounting base is connected to a drain pipe that extends to the outside of the dehumidification channel. The upper surface of the mounting base slopes downward from the four sides towards the drain pipe, which facilitates the discharge of sewage from the drain pipe during use.

7. The workshop welding fume removal system according to claim 1, characterized in that: The air intake duct is equipped with an exhaust duct for the air intake fan, and the exhaust duct is equipped with an exhaust pipe.

Citation Information

Patent Citations

  • Wet-process low-wind-resistance dust removal system for welding fume in container workshop

    CN219767159U