Wet dust removal and mist treatment system for steel pipe production line

Abstract

The utility model discloses a wet dust removal and mist treatment system for a steel pipe production line, which comprises a dust collection device, a spray washing tower, a demisting tower, a high-pressure fan and a water supply device, and the dust collection device comprises a dust collection cover arranged at a dust collection point on the steel pipe production line; a plurality of spraying assemblies are arranged in the spraying and washing tower at intervals in the vertical direction, a gas collecting pipeline is arranged between the spraying and washing tower and the dust collecting device, and the peripheral surface of the bottom of the spraying and washing tower is communicated with the dust collecting cover through the gas collecting pipeline; a plurality of layers of plate type demisters are arranged in the demisting tower at intervals in the vertical direction, a gas conveying pipeline is arranged between the demisting tower and the spraying and washing tower, and the peripheral surface of the bottom of the demisting tower is communicated with the top end of the spraying and washing tower through the gas conveying pipeline. The dust collector can continuously work for a long time, the dust collection effect is ensured, and the dust collection efficiency is improved.

Description

Technical Field

[0001] The utility model relates to a wet dust removal and fog treatment system for a steel pipe production line, belonging to the technical field of steel pipe processing. Background Art

[0002] At present, during the production of hot-rolled seamless steel pipes, dirty gases such as dust, scale, and water vapor are discharged during rolling, which has a great impact on the workshop environment and inevitably relies on a dust removal system to improve the environment.

[0003] After retrieving the prior art, it is found that a Chinese patent with the publication number CN209020120U discloses a high-efficiency smoke collection and treatment system for a steel pipe production line. In this patent, asbestos is used for filtration in an open-type filter exhaust box. However, it is found during use that asbestos needs to be replaced regularly after long-term use, which increases the complexity and cost of operation and maintenance. Summary of the Invention

[0004] The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide a wet dust removal and fog treatment system for a steel pipe production line, which can work continuously for a long time, ensure the dust removal effect, and improve the dust removal efficiency.

[0005] To solve the above technical problem, the technical solution of the utility model is: a wet dust removal and fog treatment system for a steel pipe production line, comprising:

[0006] A dust collection device, the dust collection device includes a dust collection hood arranged at a dust collection point on the steel pipe production line;

[0007] A spray washing tower, in which a plurality of spray components are arranged at intervals along the vertical direction. A gas collection pipe is provided between the spray washing tower and the dust collection device, and the outer peripheral surface at the bottom of the spray washing tower is connected to the dust collection hood through the gas collection pipe;

[0008] A demisting tower, in which a plurality of plate demisters are arranged at intervals along the vertical direction. An air delivery pipe is provided between the demisting tower and the spray washing tower, and the outer peripheral surface at the bottom of the demisting tower is connected to the top of the spray washing tower through the air delivery pipe;

[0009] A high-pressure fan, the high-pressure fan is provided with an air suction port and an air outlet. The air suction port of the high-pressure fan is connected to the top of the demisting tower through a pipeline, and the air outlet of the high-pressure fan discharges gas;

[0010] A water supply device, the water supply device is respectively connected to the plurality of spray components of the spray washing tower, and the water supply device is adapted to supply water to the plurality of spray components of the spray washing tower.

[0011] Further, in order to save energy and reduce consumption and ensure stable operation, the wet dust removal and mist treatment system of the steel pipe production line further includes a controller, and the controller is respectively connected to the water supply device, the high-pressure blower and the steel pipe production line;

[0012] After the steel pipe production line is started, it sends a start signal to the controller, and the controller is adapted to receive the start signal and control the start of the water supply device and the high-pressure blower;

[0013] Wherein, the controller further includes a delay component and a control component connected to each other, and the delay component is adapted to control the control component to delay the closing of the water supply device and the high-pressure blower according to the preset delay time in the delay component after the received start signal stops.

[0014] Further, an anti-flushing mechanism is provided inside the demisting tower, and the anti-flushing mechanism includes:

[0015] At least one set of reverse spraying devices, and the reverse spraying devices are installed inside the demisting tower;

[0016] The water outlet of the reverse spraying device faces the lower surface of the plate demister in the demisting tower;

[0017] The water supply device is connected to the reverse spraying device, and the water supply device is adapted to supply water to the reverse spraying device.

[0018] Further, in order to facilitate the collection of sewage, the wet dust removal and mist treatment system of the steel pipe production line further includes a workshop sewage collection device, and the workshop sewage collection device includes:

[0019] A sewage ditch, and the sewage ditch is respectively connected to the spray washing tower, the demisting tower and the gas transmission pipeline;

[0020] The sewage ditch is adapted to collect and transport the sewage generated by the spray washing tower, the demisting tower and the gas transmission pipeline.

[0021] Further, a specific structure of the water supply device is provided, and the water supply device includes:

[0022] A plurality of spray pumps, each spray pump is provided with a water inlet and a water outlet, and the water inlet of the spray pump is adapted to connect to a water source;

[0023] A plurality of regulating valves, each regulating valve is provided with a water inlet end and a water outlet end, the water inlet end of the regulating valve is communicated with the water outlet of the corresponding spray pump, the water outlet end of the regulating valve is communicated with the spray assembly of the corresponding spray washing tower, and the regulating valve is adapted to control the water flow rate entering the corresponding spray assembly of the spray washing tower.

[0024] Furthermore, the wet dust removal and mist treatment system for the steel pipe production line further includes an exhaust device, and the exhaust device includes:

[0025] A chimney, the bottom of the chimney is communicated with the air outlet of the high-pressure fan.

[0026] Furthermore, in order to improve the sealing performance, a sealing structure is provided at the connection between the dust collection hood and the air collection pipe.

[0027] The sealing structure includes:

[0028] A sealing ring, the sealing ring is arranged at the interface between the dust collection hood and the air collection pipe.

[0029] Furthermore, in order to be able to adjust the air collection pipe, an adjusting valve is further provided on the air collection pipe, and the adjusting valve is suitable for adjusting the gas flow rate of the air collection pipe.

[0030] Furthermore, the demisting tower is provided with three layers of plate demisters.

[0031] Furthermore, a specific type of high-pressure fan is provided, and the high-pressure fan is a variable-frequency motor.

[0032] By adopting the above technical solutions, the present utility model has the following beneficial effects:

[0033] In the present utility model, during the production process of the steel pipe production line, dirty gases such as dust, scale, and water vapor will be generated. These gases are first collected by the dust collection hood of the dust collection device, and then enter the bottom of the spray scrubber through the air collection pipe. In the spray scrubber, multiple spray components arranged at intervals in the vertical direction perform spray scrubbing to remove dust and reduce the concentration of harmful substances in the air. Subsequently, the gas exits from the top and then enters the bottom of the demisting tower through the gas transmission pipe, and the mist in the gas is removed by three layers of plate demisters. The "mist" not only contains moisture, but also dissolves harmful substances such as sulfuric acid, sulfates, and sulfur dioxide. Finally, it is drawn out through the air suction port of the high-pressure fan and discharged through the air outlet. The entire system can work continuously for a long time, ensuring remarkable dust removal effect, improving the dust removal efficiency, and solving the problem of incomplete smoke treatment in the steel pipe production line.

[0034] In addition, the wastewater generated during the operation of the spray washing tower and the demisting tower, as well as the wastewater generated in the gas transmission pipeline, are discharged through pipelines into the sewage ditch to avoid environmental pollution and facilitate centralized treatment. By setting up a controller, which is connected to the water supply device, the high-pressure fan, and the steel pipe production line, when starting the steel pipe production line, the controller receives the start signal and controls the synchronous start of the water supply device and the high-pressure fan. When shutting down the steel pipe production line, under the action of the delay component, the water supply device and the high-pressure fan are delayed to shut down, ensuring stable operation of the system, energy conservation, and consumption reduction. A reverse spray device is provided inside the demisting tower, and the plate demister is sprayed through the reverse spray device to keep the inside of the demisting tower clean, extend the service life of the equipment, and improve the demisting efficiency.

[0035] In summary, the wet dust removal and mist treatment system for the steel pipe production line of the present utility model has beneficial effects such as high efficiency, energy conservation, stable operation, energy conservation and consumption reduction, and environmental friendliness while ensuring the dust removal effect and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic structural diagram of the wet dust removal and mist treatment system for the steel pipe production line of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0037] In order to make the content of the present utility model easier to be clearly understood, the following further details the present utility model according to specific embodiments in conjunction with the drawings.

[0038] As Figure 1 shown, a wet dust removal and mist treatment system for a steel pipe production line includes:

[0039] A dust collection device 1, which includes a dust collection hood arranged at the dust collection point on the steel pipe production line;

[0040] A spray washing tower 2, in which a plurality of spray components 21 are arranged at intervals along the vertical direction. A gas collection pipeline 4 is provided between the spray washing tower 2 and the dust collection device 1, and the outer peripheral surface at the bottom of the spray washing tower 2 is connected to the dust collection hood through the gas collection pipeline 4;

[0041] A demisting tower 3, in which a plurality of plate demisters 31 are arranged at intervals along the vertical direction. A gas transmission pipeline 5 is provided between the demisting tower 3 and the spray washing tower 2, and the outer peripheral surface at the bottom of the demisting tower 3 is connected to the top of the spray washing tower 2 through the gas transmission pipeline 5;

[0042] A high-pressure fan 6, which has a suction port and an air outlet. The suction port of the high-pressure fan 6 is connected to the top of the demisting tower 3 through a pipeline, and the air outlet of the high-pressure fan 6 discharges gas;

[0043] The water supply device 7 is respectively connected to the multi-way spray assembly 21 of the spray washing tower 2 , and the water supply device 7 is suitable for supplying water to the multi-way spray assembly 21 of the spray washing tower 2 .

[0044] In this embodiment, if Figure 1 As shown, dirty gases containing dust, iron oxide, water vapor, etc. are generated during the production process of the steel pipe production line. These gases are first collected by the dust collecting hood of the dust collection device 1, and then enter the bottom of the spray washing tower 2 through the gas collecting pipe 4. In the spray washing tower 2, the multi-way spray assembly 21 arranged at intervals in the vertical direction is sprayed and washed to remove dust and reduce the concentration of harmful substances in the air. Subsequently, the gas goes out from the top and enters the bottom of the defogger 3 through the gas pipeline 5, and the mist in the gas is removed by the three-layer plate defogger 31. "Fog" not only contains moisture, but also contains harmful substances such as sulfuric acid, sulfate, and sulfur dioxide. Finally, it is extracted through the exhaust port of the high-pressure fan 6 and discharged through the air outlet. The entire system can work continuously for a long time, ensuring a significant dust removal effect, improving the dust removal efficiency, and solving the problem of incomplete smoke treatment in the steel pipe production line.

[0045] In the spray washing tower 2, the water mist is in full contact with the dust, and most of the particles are captured and settled. The gas after preliminary treatment enters the demister 3 through the gas pipeline 5. The material of the plate demister 31 in the demister 3 can be 304 stainless steel, and of course in some embodiments it can also be made of polypropylene PP. The diameter of the spray washing tower 2 is 3.4m and the height is about 5.5m; from bottom to top, there is a layer of exhaust gas distribution grid, three layers of spray components 21, a layer of dehydration components and a set of backwash components in the spray washing tower 2. The nozzles of the spray component 21 and the backwash component adopt silicon carbide vortex nozzles, and the dehydration component adopts a plate demister. The plate demister is made of polypropylene PP material. The plate demister has low resistance and is not easy to clog, while reducing droplets in the flue gas. The spray washing tower 2 is made of carbon steel welding material, and the inner and outer walls are coated with rust-removing paint. The wall thickness of the spray washing tower 2 is 10mm.

[0046] Specifically, Figure 1 As shown, the wet dust removal and mist treatment system for the steel pipe production line also includes a controller, which is respectively connected to the water supply device 7, the high-pressure fan 6 and the steel pipe production line;

[0047] After the steel pipe production line is started, a start signal is sent to the controller, and the controller is adapted to receive the start signal and control the water supply device 7 and the high-pressure fan 6 to start;

[0048] Among them, the controller also includes a delay component and a control component that are interconnected. The delay component is suitable for controlling the control component to delay closing the water supply device 7 and the high-pressure fan 6 according to the delay time preset in the delay component after the received start signal stops.

[0049] In this embodiment, as Figure 1 shown, when the steel pipe production line starts, after the controller receives the start signal, it immediately starts the water supply device 7 and the high-pressure blower 6 to ensure that the dust removal operates synchronously with the production line. This improves the response speed of the system and also avoids unnecessary energy waste.

[0050] When the production line stops running, the delay component does not immediately turn off the dust removal, but continues to run according to the preset delay time. This delay-off mechanism ensures that the dust and mist remaining in the system can be fully processed, preventing pollutants from depositing in the system or escaping into the environment. At the same time, it also prepares for the next start of the system and ensures the clean state of the equipment.

[0051] Specifically, as Figure 1 shown, an anti-flushing mechanism is provided inside the demisting tower 3. The anti-flushing mechanism can have the following structure, including:

[0052] Three groups of reverse spraying devices 32, which are installed inside the demisting tower 3;

[0053] The water outlet of the reverse spraying device 32 faces the lower surface of the plate demister 31 in the demisting tower 3;

[0054] The water supply device 7 is connected to the reverse spraying device 32, and the water supply device 7 is suitable for supplying water to the reverse spraying device 32.

[0055] In this embodiment, as Figure 1 shown, the anti-flushing mechanism inside the demisting tower 3 significantly improves the self-cleaning ability and operating efficiency of the system. Three groups of reverse spraying devices 32 are installed inside the demisting tower 3, and their water outlets face the lower surface of the plate demister 31.

[0056] When a certain amount of dirt or water droplets accumulate on the plate demister 31, the reverse spraying device 32 can be started to wash the plate demister 31 from bottom to top.

[0057] This embodiment extends the service life of the plate demister 31 and reduces the frequency and difficulty of manual cleaning. Secondly, by keeping the plate demister 31 clean, the system can continuously maintain high-efficiency demisting performance and avoid efficiency decline caused by dirt accumulation.

[0058] Specifically, as Figure 1 shown, the wet dust removal and mist treatment system for the steel pipe production line further includes a workshop sewage collection device. The workshop sewage collection device can have the following structure, including:

[0059] A sewage ditch 8, which is respectively connected to the spray washing tower 2, the demisting tower 3 and the gas transmission pipeline 5;

[0060] The sewage ditch 8 is suitable for collecting and transporting the sewage generated by the spray washing tower 2, the demisting tower 3 and the gas transmission pipeline 5.

[0061] In this embodiment, as Figure 1 shown, the function of the workshop sewage collection device is the recycling of water resources. The sewage ditch 8, as a unified collection channel, connects the three main sewage generation points: the spray washing tower 2, the demisting tower 3 and the gas transmission pipeline 5. It ensures that all the sewage generated during the operation of the system can be effectively collected, preventing the sewage from spilling around and causing secondary pollution.

[0062] Then, this centralized sewage collection system facilitates the subsequent water treatment and recycling. The collected sewage can be treated and reused in the spray system to achieve a closed-loop utilization of water resources. This not only greatly reduces the consumption of fresh water but also reduces the wastewater discharge. After treatment, it returns to the workshop's turbid circulating water pipeline.

[0063] Specifically, as Figure 1 shown, the water supply device 7 can have the following structure, including:

[0064] A spray pump, which has an inlet and an outlet. The inlet of the spray pump is suitable for connecting to a water source;

[0065] Three regulating valves, each of which has an inlet end and an outlet end. The inlet end of the regulating valve is connected to the outlet of the corresponding spray pump, and the outlet end of the regulating valve is connected to the spray assembly 21 of the corresponding spray washing tower 2. The regulating valve is suitable for controlling the water flow rate into the corresponding spray assembly 21 of the spray washing tower 2.

[0066] In this embodiment, as Figure 1 shown, the three regulating valves are all electric regulating valves. The main function of the regulating valve is to control the water flow rate into each spray assembly 21. By adjusting the opening degree of the regulating valve, the spray intensity of each spray assembly 21 can be precisely controlled, optimizing the use of water resources under different production conditions and avoiding unnecessary waste.

[0067] The spray pump uses a 22kw variable-frequency pipeline circulation pump.

[0068] Specifically, as Figure 1 shown, the wet dust removal and fog treatment system for the steel pipe production line further includes an exhaust device, and the exhaust device can have the following structure, including:

[0069] A chimney 9, the bottom of the chimney 9 is connected to the air outlet of the high-pressure fan 6.

[0070] In this embodiment, as Figure 1As shown, the chimney 9 is provided with an appropriate height, which can not only ensure that the discharged gas can be fully diffused, reduce the impact on the surrounding environment, but also prevent the discharged gas from being blocked by surrounding buildings or terrain, causing local pollution. In addition, the height of the chimney also needs to consider the local meteorological conditions to ensure effective discharge in various weather conditions.

[0071] Specifically, as Figure 1 shown, a sealing structure is provided at the connection between the dust collection hood and the gas collection pipe 4.

[0072] The sealing structure includes:

[0073] A sealing ring, which is arranged at the interface between the dust collection hood and the gas collection pipe 4.

[0074] Specifically, as Figure 1 shown, a regulating valve is also provided on the gas collection pipe 4, and the regulating valve is suitable for regulating the gas flow rate of the gas collection pipe 4.

[0075] In this embodiment, as Figure 1 shown, the main function of the regulating valve provided on the gas collection pipe 4 is to control the gas flow rate through the gas collection pipe 4. By adjusting the opening degree of the regulating valve, the operator can accurately control the amount of gas entering the spray scrubber 2. This control ability is particularly important under different production conditions. For example, when the production line is operating at high load, the valve opening can be increased to increase the gas treatment capacity; while in low load or when some dust collection points are temporarily out of use, the opening can be appropriately reduced to avoid unnecessary energy consumption.

[0076] In addition, the regulating valve can also be used to balance the suction force of different dust collection points in the system. Since the positions and dust generation amounts of each dust collection point may be different, by adjusting the valves on each branch pipe, it can be ensured that each dust collection point can obtain an appropriate suction force, improving the dust removal efficiency of the entire system.

[0077] For example, dust collection hoods are arranged at the inlet, outlet and top of the loose rod machine on the production line to collect the waste gas generated during the process of the loose rod machine.

[0078] In addition, since a traveling crane is required when replacing the frame of the pipe jacking device, the dust hood installed above the pipe jacking device is a swing-type dust hood. The swing-type dust hood is driven by a double-gear swing hydraulic cylinder plus a rack. During operation, the dust hood is placed above the frame to collect waste gas. When replacing the frame, the swing cylinder drives the dust hood to swing away from above the frame. A 12-mm wear-resistant rubber seal is used between the swing-type dust hood and the gas collecting pipe 4. The swing-type dust hood includes three double-rack swing hydraulic cylinders, a motor for driving 360-degree rotation, and one rotary dust removal pipe. The dust hood is made of 2-mm stainless steel plate to ensure uniform air volume inside the dust hood. An air volume regulating valve is provided at the connection between the dust hood and the rotary dust removal pipe. Each group of rotary dust removal pipes is connected to the gas collecting pipe 4 by a flange, and the air volume regulating valve is made of stainless steel. The swing-type dust hood can be an existing technology.

[0079] Specifically, as Figure 1 shown, the demisting tower 3 is provided with three layers of plate demisters 31.

[0080] In this embodiment, as Figure 1 shown, the main function of the demisting tower 3 is to further purify the flue gas and achieve the purpose of dust removal by removing the droplets in the flue gas. Inside the demisting tower 3, a distribution grid, three layers of plate demisters 31, three sets of backwashing pipelines and nozzles are arranged from bottom to top. The material of the plate demister 31 can be polypropylene PP, or of course 304 stainless steel. The tower body is made of carbon steel by welding, and the inner and outer walls are coated with rust-removing paint.

[0081] Specifically, as Figure 1 shown, the high-pressure blower 6 is a variable-frequency motor.

[0082] In this embodiment, as Figure 1 shown, the high-pressure blower 6 is designed with a variable-frequency motor and can adjust the air volume according to the actual dust removal requirements, achieving energy conservation and consumption reduction.

[0083] The resistance loss of the overall dust removal is approximately 1200 Pa for the spray scrubber tower, 700 Pa for the demisting tower, 500 Pa for the pipelines and valves, and 2600 Pa for the negative pressure required for capture, totaling approximately 5000 Pa. The high-pressure blower 6 generally requires a wind pressure greater than 5000 Pa.

[0084] During the operation of the system, the high-pressure blower 6 is connected to the spray scrubber tower 2 and the demisting tower 3 through pipelines to form a closed-loop system. When the production line is started, the high-pressure blower 6 is immediately turned on to draw the dust-containing gas into the spray scrubber tower 2. Inside the spray scrubber tower 2, the spray assembly 21 makes the water mist and dust fully contact to achieve preliminary dust removal. Subsequently, the gas enters the demisting tower 3 for secondary treatment to remove the remaining water mist and fine particles. Throughout the process, the variable-frequency motor can automatically adjust the air volume according to the real-time monitored dust concentration, ensuring the dust removal effect while avoiding unnecessary energy waste.

[0085] The variable-frequency motor can specifically adopt a 200kw variable-frequency motor.

[0086] In the specific embodiments described above, the technical problems solved, technical solutions and beneficial effects of the present utility model are further described in detail. It should be understood that the above are only specific embodiments of the present utility model and are not used to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A wet dust removal and mist treatment system for a steel pipe production line, characterized in that: include: A dust collecting device (1), the dust collecting device (1) comprising a dust collecting hood arranged at a dust collecting point on a steel pipe production line; A spray washing tower (2), wherein a plurality of spray assemblies (21) are arranged at intervals in the vertical direction in the spray washing tower (2), an air collecting pipe (4) is arranged between the spray washing tower (2) and the dust collecting device (1), and the outer peripheral surface of the bottom of the spray washing tower (2) is connected to the dust collecting hood through the air collecting pipe (4); A demister tower (3), wherein a plurality of plate demisters (31) are arranged at intervals in the vertical direction in the demister tower (3), a gas pipeline (5) is arranged between the demister tower (3) and the spray scrubber (2), and the outer peripheral surface of the bottom of the demister tower (3) is connected to the top of the spray scrubber (2) through the gas pipeline (5); A high-pressure fan (6), wherein the high-pressure fan (6) is provided with an air intake and an air outlet, the air intake of the high-pressure fan (6) is connected to the top of the defogger (3) through a pipeline, and the air outlet of the high-pressure fan (6) discharges gas; A water supply device (7), wherein the water supply device (7) is respectively connected to the multi-channel spray assembly (21) of the spray washing tower (2), and the water supply device (7) is suitable for supplying water to the multi-channel spray assembly (21) of the spray washing tower (2).

2. The wet dust removal and mist treatment system for a steel pipe production line according to claim 1 is characterized in that: It also includes a controller, which is respectively connected to the water supply device (7), the high-pressure fan (6) and the steel pipe production line; After the steel pipe production line is started, a start signal is sent to the controller, and the controller is adapted to receive the start signal and control the water supply device (7) and the high-pressure fan (6) to start; The controller further comprises a delay component and a control component which are interconnected, wherein the delay component is adapted to control the control component to delay shutting down the water supply device (7) and the high-pressure fan (6) according to a delay time preset in the delay component after the received start signal stops.

3. The wet dust removal and mist treatment system for a steel pipe production line according to claim 1 is characterized in that: The demisting tower (3) is provided with a backwashing mechanism, and the backwashing mechanism comprises: At least one set of reverse spray devices (32), wherein the reverse spray devices (32) are installed inside the demisting tower (3); The water outlet of the reverse spray device (32) faces the lower surface of the plate-type demister (31) of the demister tower (3); The water supply device (7) is connected to the reverse spray device (32), and the water supply device (7) is suitable for supplying water to the reverse spray device (32).

4. The wet dust removal and mist treatment system for a steel pipe production line according to claim 1 is characterized in that: It also includes a workshop sewage collection device, the workshop sewage collection device comprising: A sewage ditch (8), wherein the sewage ditch (8) is respectively connected to the spray scrubber (2), the demister tower (3) and the gas pipeline (5); The sewage ditch (8) is suitable for collecting and transporting sewage generated by the spray washing tower (2), the demister tower (3) and the gas transmission pipeline (5).

5. The wet dust removal and mist treatment system for a steel pipe production line according to claim 1 is characterized in that: The water supply device (7) comprises: A plurality of spray pumps, each of which is provided with a water inlet and a water outlet, and the water inlet of the spray pump is suitable for connecting to a water source; A plurality of regulating valves, each of the regulating valves being provided with a water inlet and a water outlet, the water inlet of the regulating valve being connected to the water outlet of the corresponding spray pump, the water outlet of the regulating valve being connected to the spray assembly (21) of the corresponding spray washing tower (2), the regulating valve being suitable for controlling the water flow of the corresponding spray assembly (21) entering the spray washing tower (2).

6. The wet dust removal and mist treatment system for a steel pipe production line according to claim 1 is characterized in that: Also included is an exhaust device, the exhaust device comprising: A chimney (9), wherein the bottom of the chimney (9) is connected to the air outlet of the high-pressure blower (6).

7. The wet dust removal and mist treatment system for a steel pipe production line according to claim 1 is characterized in that: A sealing structure is provided at the connection between the dust collecting hood and the gas collecting pipe (4). The sealing structure comprises: A sealing ring is arranged at the interface between the dust collecting hood and the gas collecting pipe (4).

8. The wet dust removal and mist treatment system for a steel pipe production line according to claim 1 is characterized in that: The gas collection pipeline (4) is also provided with a regulating valve, and the regulating valve is suitable for regulating the gas flow rate of the gas collection pipeline (4).

9. The wet dust removal and mist treatment system for a steel pipe production line according to claim 1 is characterized in that: The demister tower (3) is provided with a three-layer plate demister (31).

10. The wet dust removal and mist treatment system for a steel pipe production line according to claim 1, characterized in that: The high-pressure fan (6) is a variable-frequency motor.

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