Flange surface anti-corrosion treatment device

Abstract

The invention relates to a flange surface anti-corrosion treatment device which enables a spraying process to be carried out in an approximately oxygen-free environment, prevents a coating material from being oxidized, prevents bubbles or pores from being generated in a coating, improves compactness and adhesive force of the coating, enables the coating to be more uniform and smoother, and has better protection performance. The flange plate is uniformly heated through the induction heating coil, the internal stress of a coating in the curing process can be reduced through heating, the coating is prevented from cracking or stripping, rapid cooling is achieved after spraying is completed, meanwhile, particulate matter generated in the spraying process is taken away through airflow, pollution is reduced, efficient air purification is achieved, and the environment and the health of operators are protected; particulate matters in circulating gas are efficiently removed through the multi-stage filtering system, the cleanliness of exhausted gas is ensured, meanwhile, the particulate matters on the negative electrode ring and the positive electrode ring are automatically cleaned through the self-cleaning assembly, manual intervention is reduced, long-term efficient operation of the system is kept, and the maintenance cost is reduced.

Description

Technical Field

[0001] The invention relates to a flange surface anti-corrosion treatment device, in particular to a flange surface anti-corrosion treatment device applied in the field of spraying technology. Background Art

[0002] In industrial production and engineering applications, flanges, as important connecting components, are often exposed to various corrosive environments. Therefore, effective anti-corrosion treatment is crucial. When spraying in a conventional atmospheric environment, the coating material is easily exposed to oxygen in the air. Contact between the coating material and oxygen will produce bubbles or pores, resulting in reduced density and adhesion of the coating. Existing spraying equipment usually lacks effective filtering devices. The particulate matter generated during the spraying process is directly discharged into the air, seriously polluting the working environment and posing a threat to the health of operators. This not only does not meet environmental protection requirements, but may also cause occupational diseases and other health problems.

[0003] The specification of Chinese invention patent CN115365034A discloses a two-way power-assisted clamping type anti-corrosion spraying equipment for flanges, which can perform two-way power-assisted clamping of flanges, facilitate rapid face-changing of flanges, and evenly coat flanges through the intervention of wind force. Although the present invention is provided with a flange rapid face-changing device, the spraying quality is poor, it is easily oxidized, and the particulate matter generated by the spraying cannot be filtered and recovered.

[0004] The specification of Chinese invention patent CN112808491A discloses an anti-corrosion spraying device for hardware pipe fittings for electric power engineering, including a workbench, a conveyor belt, a conveyor, an adjustment mechanism, an isolation cover, a spraying mechanism, a telescopic frame, a support frame, a clamping mechanism and an electric turntable; the conveyor belt and the conveyor are respectively located on both sides of the workbench, the adjustment mechanism and the telescopic frame are both installed on the workbench, and the two ends of the telescopic frame extend to the top of the conveyor belt and the conveyor. The anti-corrosion spraying device for hardware pipe fittings for electric power engineering, the clamping mechanism clamps the flange on the conveyor belt with the cooperation of the telescopic frame, and transmits it to the electric turntable driven by the linear guide rail, and sprays it in the isolation cover, and the electric turntable can drive the flange on it to rotate so that it is sprayed evenly, and the clamping mechanism can turn over the flange, so that the flange is sprayed evenly, and after spraying, the flange is directly moved to the conveyor to improve its processing efficiency. The present invention improves the spraying efficiency and processing efficiency to a certain extent, but the atomized particles generated during the spraying process pollute the environment and the working environment is poor.

[0005] To this end, we use this technical solution to solve the problems of oxidation and poor quality of anti-corrosion coating during spraying of existing equipment, as well as the lack of filtering devices leading to non-compliance with environmental protection standards. Summary of the invention

[0006] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is to provide a flange surface anti-corrosion treatment device, which performs rotary oxygen-free thermal spraying on the flange under a vacuum environment, thereby reducing the chance of contact between the coating material and oxygen, preventing oxidation of the coating material, ensuring that the coating material is evenly distributed on the flange surface, improving the adhesion of the coating, reducing bubble formation, and obtaining a higher quality coating. At the same time, a filtering and purification device is used to process particulate matter generated during spraying to improve the working environment.

[0007] In order to solve the above problems, the present invention provides a flange surface anti-corrosion treatment device, comprising a flange plate, the inner end of the flange plate is fixedly connected to an inflatable shaft, the outer end of the inflatable shaft is fixedly connected to a motor, and the characteristic is that the outer end of the inflatable shaft is rotatably connected to an outer shell, the inner wall of the outer shell is sleeved with the inner shell, the outer wall of the inner shell is provided with a bayonet, the outer end of the inflatable shaft is rotatably connected to the bayonet, the inner wall of the inner shell is fixedly connected to a nozzle and an induction heating coil, the nozzle and the induction heating coil are arranged oppositely, the bottom of the outer shell and the inner shell are both provided with through holes, the bottom end of the outer shell is fixedly connected to a conical bucket, the bottom end of the conical bucket is fixedly connected to a filter screen, the outer end of the filter screen is fixedly connected to a sealing cover, the outer end of the bottom of the filter screen is fixedly connected to a bottom plate, the outer end of the bottom plate is fixedly connected to a negative electrode ring, the bottom end of the sealing cover is fixedly connected to a positive electrode ring, and the top of the sealing cover is fixedly connected to a plurality of symmetrically arranged self-cleaning components.

[0008] As a further improvement of the present application, the self-cleaning component includes a cleaning tube fixedly connected to the end of the sealing cover, and the cleaning tube passes through the sealing cover and communicates with the outside world, and the inner wall of the cleaning tube is slidably connected to an internal magnetic piston.

[0009] As a further improvement of the present application, the top end of the inner magnetic piston is fixedly connected with an elastic band, the outer wall of the cleaning tube is slidably connected with a magnetic ring, and the outer end of the magnetic ring is fixedly connected with a negative scraper ring and a positive scraper ring.

[0010] As a further improvement of the present application, one end of the elastic band away from the inner magnetic piston is fixedly connected to an elastic plate, the outer end of the elastic plate is fixedly connected to the outer end of the conical bucket, and the outer end of the elastic plate is fixedly connected to a vibration pin.

[0011] As another improvement of the present application, an air collecting hood is fixed to the outer wall of the positive electrode ring, the outer end of the air collecting hood is threadedly connected to a collecting plate, the bottom end of the collecting plate is fixedly connected to a first separating ring and a second separating ring, the first separating ring is arranged in contact with the bottom end of the negative electrode ring, the second separating ring is fixedly connected to the bottom end of the filter, and the outer end of the air collecting hood is fixedly connected to a negative pressure fan via a negative pressure pipe.

[0012] As another improved supplement to the present application, a sealing strip is fixedly connected to the outer end of the inner shell, the interior of the sealing strip is filled with heat-absorbing expansion fluid, a sealing groove nested with the sealing strip is opened on the inner wall of the outer shell, a hydraulic cylinder is fixedly connected to the outer end of the inner shell, and a top cover is provided on the top of the outer shell.

[0013] As another improved supplement of the present application, the cleaning tube is made of non-magnetic material, and the inner and outer walls of the cleaning tube are polished, and the elastic band is made of flexible elastic material.

[0014] In summary, this solution has the following beneficial effects:

[0015] 1. Anaerobic spraying: Close the top cover, start the negative pressure fan, evacuate the entire device, and make the inner shell in a vacuum state. By creating a closed environment and evacuating the vacuum, ensure that the spraying process is carried out in a nearly oxygen-free environment, reduce the chance of contact between the coating material and oxygen, and prevent bubbles or pores in the coating, thereby improving the density and adhesion of the coating, making the coating more uniform and smooth, with better protective performance, and avoiding the initial oxidation of the coating. Initial oxidation will affect the chemical stability and physical properties of the coating, resulting in a decrease in coating quality.

[0016] 2. Uniform heating and rotary spraying: The flange is evenly heated by the induction heating coil, and the motor drives the air shaft to rotate to ensure that the coating material is evenly distributed on the flange surface. Heating can reduce the internal stress of the coating during the curing process and prevent the coating from cracking or peeling.

[0017] 3. Circulation heat dissipation: After spraying is completed, the induction heating coil stops heating, the top cover is opened, and the negative pressure fan is started for exhaust. The negative pressure fan extracts the gas inside the inner shell through the through hole to promote the rapid cooling of the flange. At the same time, the airflow takes away the particulate matter generated during the spraying process, reducing pollution, achieving efficient air purification, and protecting the environment and the health of operators.

[0018] 4. Filtration and purification: After the initial filtration of the filter, the airflow enters the electric field area formed by the negative electrode ring and the positive electrode ring. The positively charged particles move toward the negative electrode ring and are adsorbed on it, and the negatively charged particles move toward the positive electrode ring and are adsorbed on it. Through the multi-stage filtration system, the particles generated during spraying in the circulating gas are efficiently removed to ensure the cleanliness of the exhaust gas and protect the environment and the health of operators.

[0019] 5. Self-cleaning; when negative pressure is drawn, the inner magnetic piston moves downward along the cleaning tube under the action of negative pressure, driving the magnetic ring and the negative and positive scraper rings to clean the particles on the negative and positive rings. After the negative pressure disappears, the inner magnetic piston drives the magnetic ring and scraper ring assembly upward under the elastic force of the elastic belt for secondary cleaning. The elastic plate swings back and forth, driving the vibrating nails to knock on the conical bucket, causing the particles to fall. At the same time, the vibration is transmitted to the filter to self-clean the filter. Through the self-cleaning component, the particles on the negative and positive rings can be automatically cleaned, reducing manual intervention, maintaining long-term efficient operation of the system, and reducing maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is the first partial view of this application;

[0021] Figure 2 This is the second part of this application;

[0022] Figure 3 An exploded view of this application;

[0023] Figure 4 This is the third partial view of this application;

[0024] Figure 5 This is the front view of the application;

[0025] Figure 6 For this application Figure 5 AA section view;

[0026] Figure 7 For this application Figure 6 BB cross-sectional view;

[0027] Figure 8 For this application Figure 7 Enlarged view of point C;

[0028] Fig. 9 This is a schematic diagram of the overall structure of this application.

[0029] Description of the numbers in the figure:

[0030] 1. Flange; 2. Inflatable shaft; 3. Motor; 4. Outer shell; 5. Inner shell; 6. Bayonet; 7. Nozzle; 8. Induction heating coil; 9. Through hole; 10. Conical bucket; 11. Filter; 12. Sealing cover; 13. Bottom plate; 14. Negative electrode ring; 15. Positive electrode ring; 16. Cleaning tube; 17. Inner magnetic piston; 18. Elastic belt; 19. Magnetic ring; 20. Negative electrode scraper ring; 21. Positive electrode scraper ring; 22. Elastic plate; 23. Vibrating nail; 24. Gas collecting hood; 25. Collecting plate; 26. First separating ring; 27. Second separating ring; 28. Negative pressure fan; 29. ​​Sealing strip; 30. Hydraulic cylinder; 31. Top cover. DETAILED DESCRIPTION

[0031] Three implementation modes of the present application are described in detail below with reference to the accompanying drawings.

[0032] The first implementation method:

[0033] Figure 1-Figure 9 Shown.

[0034] The inflatable shaft 2 is fixedly connected to the inner end of the flange 1, and the outer end is fixedly connected to the motor 3, and can rotate under the drive of the motor 3. The flange 1 is fixed by an expansion clamping method to ensure that the flange 1 remains stable during the rotation process, improve the uniformity and adhesion of the spraying, the outer shell 4 cooperates with the inner shell 5 to form a closed environment, and the outer wall cooperates with the sealing strip 29 of the inner shell 5 to ensure airtightness and prevent bubbles or pores from being generated in the coating. The bayonet 6 is opened on the outer wall of the inner shell 5 and is rotatably connected to the outer end of the inflatable shaft 2. The nozzle 7 is fixedly connected to the inner wall of the inner shell 5 and is arranged opposite to the induction heating coil 8. During the rotation of the flange 1, the anti-corrosion material is evenly sprayed to ensure uniform coating thickness and improve coating quality. The induction heating coil 8 is fixedly connected to the inner wall of the inner shell 5 and is arranged opposite to the nozzle 7, which is used to induction heat the flange 1. Heating can reduce the internal stress of the coating during the curing process and prevent the coating from cracking or peeling. The through hole 9 is opened at the bottom of the outer shell 4 and the inner shell 5 to allow the circulating gas to pass through and carry the particles generated during the spraying process, which is convenient for subsequent Filtering and cleaning, the conical bucket 10 is fixedly connected to the bottom end of the outer shell 4, and a filter screen 11 is fixedly connected to the bottom to guide the circulating gas through the filter screen 11, preliminarily filter large particles, and reduce the burden of subsequent filters. The filter screen 11 is fixedly connected to the bottom end of the conical bucket 10, and a sealing cover 12 is fixedly connected to the outer end to preliminarily filter large particles in the circulating gas, protect the subsequent electric field filter, and improve the overall filtering efficiency. The sealing cover 12 is fixedly connected to the outer end of the filter screen 11, and a negative electrode ring 14 and a positive electrode ring 15 are arranged inside. The negative electrode ring 14 It is fixedly connected to the outer end of the bottom plate 13 and is arranged opposite to the positive electrode ring 15. It attracts positively charged particles under the action of the electric field. The positive electrode ring 15 is fixedly connected to the bottom end of the sealing cover 12 and is arranged opposite to the negative electrode ring 14. It attracts negatively charged particles under the action of the electric field, further improving the filtration efficiency and ensuring the cleanliness of the exhaust gas. The self-cleaning component automatically cleans the particles on the negative electrode ring 14 and the positive electrode ring 15 through a combination of magnetic power and elastic restoring force, thereby reducing manual intervention and maintaining long-term efficient operation of the system.

[0035] The second implementation method:

[0036] Figure 1-Figure 9 Shown.

[0037] The cleaning tube 16 is fixedly connected to the end of the sealing cover 12, penetrates the sealing cover 12 and communicates with the outside world, is made of non-magnetic conductive material, and the inner and outer walls are polished to ensure that the inner magnetic piston 17 slides smoothly in the cleaning tube 16, reduces friction, and improves self-cleaning efficiency. The non-magnetic conductive material avoids magnetic interference and ensures the normal operation of the magnetic ring 19. The inner magnetic piston 17 is slidably connected to the inner wall of the cleaning tube 16, and an elastic band 18 is fixedly connected to the top. Under the action of negative pressure, the inner magnetic piston 17 moves downward along the inner wall of the cleaning tube 16, driving the magnetic ring 19 and the scraper ring assembly to clean the particles on the negative electrode ring 14 and the positive electrode ring 15 downward. After the negative pressure disappears, the magnetic ring 19 moves upward under the action of the elastic band 18. The elastic band 18 is made of flexible elastic material, one end of which is fixedly connected to the top of the inner magnetic piston 17, and the other end is fixedly connected to the elastic plate 22 to provide resilience, so that the inner magnetic piston 17 quickly returns to its original position after the negative pressure disappears, driving the magnetic ring 19 and the scraper ring assembly to perform secondary cleaning, reducing manual intervention and maintaining long-term efficient operation of the system. The magnetic ring 19 is slidably connected to the outer wall of the cleaning tube 16, and the outer end is fixedly connected with a negative scraper ring 20 and a positive scraper ring 21, which slide up and down synchronously with the movement of the inner magnetic piston 17, driving the negative scraper ring 20 and the positive scraper ring 21 to clean the particles on the negative ring 14 and the positive ring 15, realizing self-cleaning and elastic. One end of the force plate 22 is fixedly connected to the end of the elastic band 18 away from the inner magnetic piston 17, and the other end is fixedly connected to the outer end of the conical bucket 10. The outer end is fixedly connected with a vibration nail 23, which swings back and forth under the action of the elastic band 18, driving the vibration nail 23 to knock the conical bucket 10, generating vibration, and causing the particles deposited on the surface of the conical bucket 10 to fall smoothly. At the same time, the vibration is transmitted to the filter screen 11 through the conical bucket 10 to self-clean the filter screen 11. The gas collection hood 24 is fixedly connected to the outer wall of the positive electrode ring 15, and the outer end is threadedly connected with a collection plate 25. The negative pressure fan 28 is fixedly connected through a negative pressure pipe to collect the particles filtered by the electric field to ensure the cleanliness of the exhaust gas. Cleanliness, protect the environment and the health of operators, the sealing strip 29 is fixedly connected to the outer end of the inner shell 5, filled with heat-absorbing expansion liquid, and nested in the sealing groove of the inner wall of the outer shell 4. During the induction heating process, the heat-absorbing expansion liquid expands, further enhancing the sealing between the outer shell 4 and the inner shell 5, ensuring the high airtightness inside the device, reducing the oxidation of the coating material, and improving the coating quality. The hydraulic cylinder 30 is fixedly connected to the outer end of the outer shell 4, and is used to drive the outer shell 4 to cooperate or disassemble with the inner shell 5, which is convenient for assembling the flange 1. The top cover 31 is set at the top of the outer shell 4. When closed, it ensures the airtightness inside the device, and when opened, it is convenient for circulating heat dissipation and filtering particulate matter.

[0038] The third implementation method:

[0039] Figure 1-Figure 9 Shown.

[0040] The working principle of this scheme is as follows: when the flange 1 is subjected to anti-corrosion spraying, the control system drives the hydraulic cylinder 30 to drive the inner shell 5 to withdraw from the outer shell 4, so that the inner shell 5 is completely outside the outer shell 4, and the flange 1 is inserted into the outer end of the inflatable shaft 2 by the clamping mechanism or manually, and the gas is filled into the inflatable shaft 2 through the gas source (such as compressed air), and the air bag expands to increase the outer diameter of the inflatable shaft 2, and the flange 1 is expanded and clamped. After the clamping is completed, the control system drives the hydraulic cylinder 30 to drive the outer shell 4 to cooperate with the inner shell 5 to form a closed environment, and at the same time, the sealing strip 29 at the outer end of the inner shell 5 is inserted into the sealing groove of the inner wall of the outer shell 4 to ensure that the inner shell 5 The airtightness of the inner shell 5 is ensured by closing the top cover 31, starting the negative pressure blower 28, and evacuating the entire device. When the interior of the inner shell 5 is in a vacuum state, the negative pressure blower 28 is stopped, and the induction heating coil 8 is controlled to be energized to induction heat the flange 1. At the same time, the motor 3 drives the air shaft 2 to rotate, and the air shaft 2 drives the flange 1 to rotate. The flange 1 is induction heated while rotating. The increased temperature inside the inner shell 5 causes the heat-absorbing expansion fluid in the sealing strip 29 to absorb heat and expand, further enhancing the sealing between the outer shell 4 and the inner shell 5. When it is detected that the temperature of the flange 1 reaches a suitable temperature, the nozzle 7 is controlled to spray the flange 1.

[0041] The sealing strip 29 between the inner shell 5 and the outer shell 4 ensures high air tightness inside the device. Combined with the closing of the top cover 31 and the operation of the negative pressure fan 28, a nearly oxygen-free environment can be quickly created. Spraying in an oxygen-free environment can avoid the reaction of the coating with oxygen and prevent the formation of bubbles or pores in the coating, thereby improving the density and adhesion of the coating, making the coating more uniform and smooth, and having better protective performance.

[0042] After spraying is completed, the induction heating coil 8 stops heating, the top cover 31 is opened, and the negative pressure fan 28 is started to exhaust air. While exhausting air, the flange 1 is quickly cooled. While dissipating heat, the particles generated during the spraying process will also be taken away. Due to the heating of the induction heating coil 8, the wet particles are turned into dry particles for easy filtration. The circulating gas enters from the top cover 31 through the inner shell 5 and carries the particles through the through hole 9 into the conical bucket 10, and then enters the filter screen 11 through the conical bucket 10. After preliminary filtration by the filter screen 11, To remove large particles, the negative electrode ring 14 and the positive electrode ring 15 are electrified at the same time. Small particles enter the area formed between the negative electrode ring 14 and the positive electrode ring 15 through the filter screen 11. When passing through the electric field area formed by the negative electrode ring 14 and the positive electrode ring 15, the positively charged particles move toward the negative electrode scraper ring 20 and are adsorbed on the negative electrode ring 14, while the negatively charged particles move toward the positive electrode ring 15 and are adsorbed on the positive electrode ring 15. After multi-stage filtration, the clean gas is extracted by the negative pressure fan 28. The discharged gas is harmless to the environment, thereby improving the working environment.

[0043] The inflatable shaft 2 drives the flange 1 to rotate. Heating can reduce the internal stress of the coating during the curing process and prevent the coating from cracking or peeling. The gas circulation promotes the rapid cooling of the flange 1, and the particulate matter generated during the spraying process is taken away by the airflow, reducing pollution and achieving efficient air purification, which not only protects the environment but also ensures the health and safety of operators.

[0044] When the negative pressure is drawn, the inner magnetic piston 17 located at the top of the cleaning tube 16 moves downward along the inner wall of the cleaning tube 16 under the action of the negative pressure, and at the same time, the inner magnetic piston 17 drives the magnetic ring 19 to move downward, and the magnetic ring 19 drives the negative scraper ring 20 and the positive scraper ring 21 to move downward. The negative scraper ring 20 and the positive scraper ring 21 clean the particles adsorbed on the negative ring 14 and the positive ring 15 in the process of moving downward, so as to achieve the purpose of self-cleaning. At the same time, the elastic belt 18 is also in a stretched state, and the elastic plate 22 is also in a bent state. When the flange 1 is cooled, the negative pressure disappears. Under the action of the elastic force of the elastic belt 18, the elastic belt 18 drives the inner magnetic piston 17 to move upward along the inner wall of the cleaning tube 16. At the same time, the inner magnetic piston 17 drives The magnetic ring 19 moves upward, driving the negative scraper ring 20 and the positive scraper ring 21 to move upward. The negative scraper ring 20 and the positive scraper ring 21 perform secondary cleaning on the particles adsorbed on the negative ring 14 and the positive ring 15 during the upward movement. At this time, the elastic plate 22 swings back and forth under the action of elastic force, driving the vibration nail 23 to knock on the conical bucket 10 to generate vibration, causing the particles deposited on the surface of the conical bucket 10 to fall smoothly. At the same time, the vibration will be transmitted to the filter 11 through the conical bucket 10 to self-clean the filter 11. The particles generated by cleaning and filtering will fall into the collection tray 25 for storage, and only need to be cleaned regularly. This self-cleaning mechanism reduces the need for manual intervention and maintains the long-term and efficient operation of the system.

[0045] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. A flange surface anti-corrosion treatment device, comprising a flange (1), the inner end of the flange (1) is fixedly connected to an inflatable shaft (2), the outer end of the inflatable shaft (2) is fixedly connected to a motor (3), characterized in that: The outer end of the inflatable shaft (2) is rotatably connected to an outer shell (4), the inner wall of the outer shell (4) is sleeved with an inner shell (5), the outer wall of the inner shell (5) is provided with a bayonet (6), the outer end of the inflatable shaft (2) is rotatably connected to the bayonet (6), the inner wall of the inner shell (5) is fixedly connected with a nozzle (7) and an induction heating coil (8), the nozzle (7) and the induction heating coil (8) are arranged opposite to each other, the bottoms of the outer shell (4) and the inner shell (5) are both provided with through holes (9), the outer The bottom end of the shell (4) is fixedly connected to a conical bucket (10), the bottom end of the conical bucket (10) is fixedly connected to a filter screen (11), the outer end of the filter screen (11) is fixedly connected to a sealing cover (12), the outer end of the bottom of the filter screen (11) is fixedly connected to a bottom plate (13), the outer end of the bottom plate (13) is fixedly connected to a negative electrode ring (14), the bottom end of the sealing cover (12) is fixedly connected to a positive electrode ring (15), and the top end of the sealing cover (12) is fixedly connected to a plurality of symmetrically arranged self-cleaning components.

2. The flange surface anti-corrosion treatment device according to claim 1, characterized in that: The self-cleaning component comprises a cleaning tube (16) fixedly connected to the end of the sealing cover (12), and the cleaning tube (16) passes through the sealing cover (12) and communicates with the outside, and the inner wall of the cleaning tube (16) is slidably connected to an inner magnetic piston (17).

3. The flange surface anti-corrosion treatment device according to claim 2, characterized in that: The top end of the inner magnetic piston (17) is fixedly connected to an elastic band (18), the outer wall of the cleaning tube (16) is slidably connected to a magnetic ring (19), and the outer end of the magnetic ring (19) is fixedly connected to a negative electrode scraper ring (20) and a positive electrode scraper ring (21).

4. The flange surface anti-corrosion treatment device according to claim 3 is characterized in that: An end of the elastic band (18) away from the inner magnetic piston (17) is fixedly connected to an elastic plate (22), an outer end of the elastic plate (22) is fixedly connected to an outer end of the conical bucket (10), and a vibration nail (23) is fixedly connected to the outer end of the elastic plate (22).

5. The flange surface anti-corrosion treatment device according to claim 1, characterized in that: An air collecting hood (24) is fixed to the outer wall of the positive electrode ring (15); the outer end of the air collecting hood (24) is threadedly connected to a collecting plate (25); the bottom end of the collecting plate (25) is fixedly connected to a first separating ring (26) and a second separating ring (27); the first separating ring (26) is arranged in contact with the bottom end of the negative electrode ring (14); the second separating ring (27) is fixedly connected to the bottom end of the filter screen (11); and the outer end of the air collecting hood (24) is fixedly connected to a negative pressure fan (28) via a negative pressure pipe.

6. The flange surface anti-corrosion treatment device according to claim 1, characterized in that: The outer end of the inner shell (5) is fixedly connected to a sealing strip (29), the interior of the sealing strip (29) is filled with heat-absorbing expansion fluid, the inner wall of the outer shell (4) is provided with a sealing groove nested with the sealing strip (29), the outer end of the inner shell (5) is fixedly connected to a hydraulic cylinder (30), and the top end of the outer shell (4) is provided with a top cover (31).

7. A flange surface anti-corrosion treatment device according to claim 2 or 3, characterized in that: The cleaning tube (16) is made of a non-magnetic material, and the inner and outer walls of the cleaning tube (16) are polished, and the elastic band (18) is made of a flexible elastic material.

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