Flange part flaw detection device and detection method thereof

Abstract

The invention discloses a flange part flaw detection device and a detection method thereof, and relates to the technical field of flange part detection.The flange part flaw detection device comprises a device body, a movable plate and a conveying platform, multiple sets of mounting columns are mounted at the bottom end of the movable plate, electromagnetic columns are mounted at the bottom ends of the multiple sets of mounting columns, and an air collection ring is mounted in the movable plate; and multiple groups of branch pipes are mounted at the bottom end of the air collecting ring, and nozzles are mounted at the ends, extending to the two sides of the multiple groups of electromagnetic columns, of the multiple groups of branch pipes. According to the device, electromagnetic columns and nozzles are arranged, after the nozzles move to the upper ends of the threaded holes correspondingly, the nozzles spray airflow, the airflow blows away residual water on the inner walls of the threaded holes or blows dry wet areas in the threaded grooves, then a movable plate continuously moves downwards, the electromagnetic columns enter the threaded holes correspondingly, and the movable plate moves downwards; and the multiple sets of electromagnetic columns absorb residual magnetic powder in the multiple sets of threaded holes correspondingly, so that residual magnetic powder in the multiple sets of threaded holes is avoided, and the subsequent machining effect of the flange part is improved.

Description

Technical Field

[0001] This invention relates to the field of flange component inspection technology, specifically to a flange component flaw detection device and its inspection method. Background Technology

[0002] Flange components are key parts in the connection of pipelines, pressure vessels, and mechanical equipment. Their quality directly affects the safety and reliability of the system. Flaw detection is a process that identifies internal or surface defects of flanges, such as cracks, porosity, inclusions, and lack of fusion, without damaging the components. This ensures that the flanges meet design standards or industry specifications and avoids accidents such as leaks and breaks caused by defects.

[0003] Magnetic particle testing is a common method for detecting surface and near-surface defects in flange parts, especially suitable for flanges made of ferromagnetic materials. The process begins with pre-treatment of the flange parts, removing oil, rust, scale, and other impurities from the surface, with a focus on cleaning bolt holes and sealing surfaces. The surface must be dry and have the required roughness to avoid interference with the test. Next, magnetization is performed. Depending on the potential defect direction, circumferential, longitudinal, or combined magnetization methods are selected, and appropriate current parameters are set. A magnetic field is generated in the flange by applying current, using a yoke, or a coil to ensure a leakage magnetic field at the defect location. Magnetic powder is then applied, either dry or wet, simultaneously during magnetization, causing the powder to accumulate at the leakage magnetic field, clearly revealing the defect. Afterward, the flange surface is visually evaluated under white light or ultraviolet light to distinguish between real and false defects, and the pass / fail status is determined according to relevant standards. Finally, post-processing involves demagnetizing the flange parts after testing to remove residual magnetic powder.

[0004] After demagnetizing the flange parts, workers transfer them to determine if they meet production standards. The flange parts are placed on either a rework conveyor belt or a subsequent processing conveyor belt. However, the magnetic powder itself has a certain degree of magnetism (especially when not fully demagnetized), and may continue to adhere due to the weak attraction of the residual magnetic field on the surface of the parts. Some finer magnetic powder particles easily adhere to the thread grooves of the bolt holes on the flange parts. Demagnetization mainly targets the residual magnetic field inside the parts and cannot directly remove the already adhered magnetic powder; wet magnetic powder will continue to adhere. In existing technology, workers only perform demagnetization and rough surface treatment. The lack of cleaning, particularly of the bolt hole thread grooves, means that when flange parts that meet production standards are subsequently processed, such as bolt hole finishing, residual wet magnetic powder will cause an "abrasive effect" between the tool and the part surface, accelerating tool wear and even scratching the inner wall of the bolt hole, reducing surface smoothness. If the carrier liquid (especially water-based carrier liquid) in the wet magnetic powder is not removed, it will create a continuous humid environment on the inner wall of the bolt hole. Residual moisture will accelerate electrochemical corrosion, forming rust spots, damaging the integrity of the thread grooves on the inner wall of the bolt hole, and affecting the fixing effect of the flange parts through the bolts and bolt holes during subsequent use. Summary of the Invention

[0005] Based on this, the purpose of the present invention is to provide a flange component flaw detection device and detection method to solve the technical problems in the background art mentioned above.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a flange component flaw detection device and its detection method, comprising a device body, a movable plate, and a conveying platform, wherein the movable plate is movably installed inside the device body, and a conveying platform is provided on one side of the device body; Multiple sets of mounting columns are installed at the bottom of the movable plate, and electromagnetic columns are installed at the bottom of each set of mounting columns. An air collecting ring is installed inside the movable plate, and multiple sets of branch pipes are installed at the bottom of the air collecting ring. Each set of branch pipes extends to one end of each of the multiple sets of electromagnetic columns and is equipped with a nozzle. The conveying platform is symmetrically equipped with mounting frames at its upper end. Each of the two sets of mounting frames has a movable seat movably mounted on its upper end. Each of the two sets of movable seats has a clamping plate movably mounted on its upper end. A conveyor belt is movably mounted on the inner wall of the conveying platform. A hydraulic cylinder is installed at the upper end of the main body of the device. A hydraulic pipe is installed at the upper end of the hydraulic cylinder and a hydraulic pump is connected to the hydraulic pipe. A hydraulic column is movably installed inside the hydraulic cylinder and extends to one end of the outer wall of the hydraulic cylinder and is movably connected to the movable plate. A bellows is installed on the upper part of the main body of the device, and an air outlet pipe is installed at the air outlet of the bellows, with one end of the air outlet pipe connected to the air collecting ring.

[0007] By adopting the above technical solution, the problem of cleaning the inner walls of multiple threaded holes in flange parts is solved. After multiple nozzles move to the upper end of multiple threaded holes, they spray airflow to remove residual moisture (water in wet magnetic suspension) from the inner walls of multiple threaded holes or to dry the damp areas inside the thread grooves. Then, the movable plate continues to move downward, and multiple electromagnetic columns enter multiple threaded holes. The electromagnetic columns absorb the residual magnetic powder inside the multiple threaded holes, thus avoiding the presence of residual magnetic powder and improving the subsequent processing effect of flange parts.

[0008] The present invention is further configured such that a first motor is installed on the upper end of the main body of the device, a first drive shaft is installed on the output end of the first motor, a drive gear is installed on one end of the first drive shaft, and a vision device is provided inside the main body of the device, and the vision device is electrically connected to the first motor.

[0009] Preferably, the vision device visually inspects the threaded holes of the flange parts, then starts the first motor to drive the first drive shaft to rotate, thereby driving the drive gear to rotate.

[0010] The present invention is further configured such that a gear ring is movably installed inside the main body of the device, and the gear ring is meshed with a drive gear.

[0011] Preferably, the drive gear rotates and meshes with the gear ring, causing the gear ring to rotate.

[0012] The invention is further configured such that multiple sets of limiting posts are installed at the bottom end of the toothed ring, multiple sets of reserved holes are opened on the movable plate, and the inner walls of the multiple sets of reserved holes are movably connected to the outer walls of the multiple sets of limiting posts, and the air outlet pipe is a corrugated flexible hose.

[0013] Preferably, the toothed ring rotates, causing multiple sets of limiting posts to move. The outer walls of the multiple sets of limiting posts are movably connected to the inner walls of multiple sets of reserved holes, thus causing the movable plate to rotate.

[0014] The present invention is further configured such that each of the multiple sets of limiting columns is equipped with a cleaning seat at its bottom end, and the inner wall of the multiple sets of cleaning seats is movably connected to the outer wall of the multiple sets of electromagnetic columns.

[0015] Preferably, multiple sets of limiting columns are displaced, which in turn causes multiple sets of cleaning seats to be displaced.

[0016] The invention is further configured such that a second motor is installed inside the conveying platform, a second drive shaft is installed at the output end of the second motor, a transmission shaft is movably installed inside the conveying platform, and a toothed synchronous belt connects the transmission shaft and the second drive shaft. Limiting shafts are movably installed inside both sets of mounting frames, and the outer walls of the two sets of limiting shafts are threadedly connected to the inner walls of the two sets of moving seats. A toothed synchronous belt connects one set of limiting shafts to the second drive shaft, and a toothed synchronous belt connects the other set of limiting shafts to the transmission shaft.

[0017] Preferably, the second motor is started, driving the second drive shaft to rotate. The second drive shaft is connected to the transmission shaft and a set of limit shafts respectively through toothed synchronous belts. The transmission shaft and the set of limit shafts rotate. The transmission shaft is connected to another set of limit shafts through toothed synchronous belts. The other set of limit shafts rotates. The outer walls of the two sets of limit shafts are threadedly connected to the inner walls of the two sets of moving seats respectively. The two sets of moving seats are displaced.

[0018] The present invention is further configured such that the upper end of both sets of mounting brackets is provided with toothed plates, and two sets of movable cylinders are movably installed inside the two sets of movable seats, and toothed synchronous belts are respectively provided between the multiple sets of movable cylinders. The movable cylinders of the two sets extend to one end of the outer wall of the two sets of movable seats and are each provided with a movable gear, and the two sets of movable gears are respectively meshed with the two sets of toothed plates.

[0019] Preferably, the two sets of movable seats continuously move, the two sets of movable gears mesh with the two sets of toothed plates respectively, the two sets of movable gears rotate, thereby driving the two sets of movable cylinders to rotate, and the multiple sets of movable cylinders are connected to each other by toothed synchronous belts, so the multiple sets of movable cylinders rotate synchronously.

[0020] The present invention is further configured such that each of the multiple sets of movable cylinder inner walls is movably installed with a telescopic column, and the outer walls of the multiple sets of telescopic columns are respectively threadedly connected to the inner walls of the multiple sets of movable cylinders. Each of the multiple sets of telescopic columns has a limit block movably installed on one end of its inner wall, and each of the multiple sets of limit blocks has a spring installed on one end, and one end of each of the multiple sets of springs is connected to the inner wall of the multiple sets of telescopic columns. The other end of each of the multiple sets of limit blocks is respectively connected to two sets of clamping plates.

[0021] Preferably, multiple sets of movable cylinders rotate synchronously, and the inner walls of the multiple sets of movable cylinders are threadedly connected to the outer walls of multiple sets of telescopic columns. The multiple sets of telescopic columns move into the interior of the multiple sets of movable cylinders, thereby driving the two sets of clamping plates to move.

[0022] The present invention is further configured such that the outer walls of the two sets of movable seats are symmetrically provided with limiting grooves, the outer walls of the two sets of clamping plates are provided with limiting plates, and the outer walls of the limiting plates are respectively movably connected to the inner walls of the multiple sets of limiting grooves.

[0023] Preferably, the limiting plate and the limiting groove cooperate to improve the stability of the clamping plate.

[0024] A flaw detection device and method for flange parts, comprising the following steps: S1: Flaw detection of flange parts: After cleaning, the flange parts are magnetized and magnetic powder is sprayed onto the outer wall of the flange parts to reveal defects. The magnetic traces are observed under white light or ultraviolet light to distinguish between real defects and false defects. S2: Flange component outer wall cleaning: flange component demagnetization, flange component outer wall magnetic powder cleaning; S3: Cleaning of threaded holes in flange parts: Flange parts are placed between two sets of clamping plates, and multiple sets of nozzles and multiple sets of electromagnetic columns work together to clean multiple sets of threaded holes; S4: Flange parts transportation: Two sets of moving seats drive the flange parts to move. After the flange parts move to the upper area of ​​the conveyor belt, the two sets of clamping plates move and the flange parts fall to the upper end of the conveyor belt. The conveyor belt runs and transports the flange parts to the next process.

[0025] In summary, the present invention has the following main beneficial effects: 1. This invention solves the problem of cleaning the inner walls of multiple threaded holes in flange parts by setting up electromagnetic columns and nozzles. After the multiple nozzles move to the upper end of the multiple threaded holes, they spray airflow to blow away the residual moisture (water in the wet magnetic suspension) on the inner wall of the multiple threaded holes or to dry the damp areas inside the thread grooves, so as to avoid rust spots caused by residual moisture in the thread grooves and ensure the sealing and fixing effect of the bolts. Then, the movable plate continues to move downward, and the multiple electromagnetic columns enter the multiple threaded holes. The multiple electromagnetic columns absorb the residual magnetic powder inside the multiple threaded holes, so as to avoid the residual magnetic powder inside the multiple threaded holes and improve the subsequent processing effect of the flange parts.

[0026] 2. This invention, by incorporating electromagnetic columns and cleaning seats, allows multiple electromagnetic columns to shut down when powered off. Magnetic powder adhering to the outer walls of these columns falls into the collection box. The electromagnetic columns then continue to move upwards, reaching the cleaning seats at one end. The cleaning seats then clean the outer walls of the electromagnetic columns, causing any remaining magnetic powder to fall into the collection box. This improves the long-term performance of the electromagnetic columns. Furthermore, the cleaning seats prevent secondary contamination of the flange by the magnetic powder adsorbed by the electromagnetic columns, thus avoiding any impact on subsequent adsorption effects. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the main body of the device in this invention; Figure 2 This is a schematic diagram of the internal structure of the main body of the device in this invention; Figure 3 This is a schematic diagram of the connection between the movable plate and the toothed ring in this invention; Figure 4 This is a schematic diagram of the movable plate in the present invention; Figure 5 This is a schematic diagram of the air collecting ring in this invention; Figure 6 This is a schematic diagram of the toothed ring in this invention; Figure 7 This is a schematic diagram of the mounting bracket in this invention; Figure 8 This is a schematic diagram of the movable seat in the present invention; Figure 9 This is an exploded view of the movable seat in this invention; Figure 10 This is a schematic diagram of the limiting plate in this invention.

[0028] Explanation of reference numerals in the attached figures: 1. Main body of the device; 2. Hydraulic cylinder; 3. Hydraulic pipe; 4. Hydraulic column; 5. Movable plate; 6. Reserved hole; 7. Mounting column; 8. Electromagnetic column; 9. Air box; 10. Air outlet pipe; 11. Air collecting ring; 12. Branch pipe; 13. Nozzle; 14. First motor; 15. First drive shaft; 16. Drive gear; 17. Gear ring; 18. Limiting column; 19. Cleaning seat; 20. Second motor; 21. Second drive shaft; 22. Transmission shaft; 23. Mounting frame; 24. Limiting shaft; 25. Gear plate; 26. Moving seat; 27. Limiting groove; 28. Movable cylinder; 29. ​​Movable gear; 30. Telescopic column; 31. Limiting block; 32. Spring; 33. Clamping plate; 34. Limiting plate; 35. Collection box; 36. Conveying platform; 37. Conveyor belt. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0030] The embodiments of the present invention will now be described.

[0031] Please refer to the following: A device and method for detecting flaws in flange parts. Figure 1 - Figure 10 It includes a device body 1, a movable plate 5 and a conveying platform 36. The movable plate 5 is movably installed inside the device body 1, and the conveying platform 36 is provided on one side of the device body 1. Multiple sets of mounting columns 7 are installed at the bottom of the movable plate 5. Electromagnetic columns 8 are installed at the bottom of each set of mounting columns 7. An air collecting ring 11 is installed inside the movable plate 5. Multiple sets of branch pipes 12 are installed at the bottom of the air collecting ring 11. Each set of branch pipes 12 extends to one end of each set of electromagnetic columns 8 and is equipped with a nozzle 13. After the multiple sets of nozzles 13 move to the upper end of the multiple sets of threaded holes, the airflow is discharged from the multiple sets of nozzles 13. The airflow blows away the residual moisture (water in the wet magnetic suspension) on the inner wall of the multiple sets of threaded holes or dries the damp area inside the threaded groove. Then the movable plate 5 continues to move downward, and the multiple sets of electromagnetic columns 8 enter the multiple sets of threaded holes. The multiple sets of electromagnetic columns 8 absorb the residual magnetic powder inside the multiple sets of threaded holes. The upper end of the conveying platform 36 is symmetrically supported by mounting frames 23. The upper end of each of the two sets of mounting frames 23 is movably mounted with a movable seat 26. The upper end of each of the two sets of movable seats 26 is movably mounted with a clamping plate 33. The inner wall of the conveying platform 36 is movably mounted with a conveyor belt 37. A hydraulic cylinder 2 is installed on the upper end of the main body 1 of the device. A hydraulic pipe 3 is installed on the upper end of the hydraulic cylinder 2, and a hydraulic pump is connected to the hydraulic pipe 3. The hydraulic pump is electrically connected to the control system. A hydraulic column 4 is movably installed inside the hydraulic cylinder 2, and the hydraulic column 4 extends to one end of the outer wall of the hydraulic cylinder 2 and is movably connected to the movable plate 5. The hydraulic pump transmits hydraulic oil to the inside of the hydraulic cylinder 2 through the hydraulic pipe 3, so that the hydraulic column 4 moves out of the inside of the hydraulic cylinder 2, thereby driving the movable plate 5 to move downward. The main body 1 of the device is equipped with a wind box 9 at the top. The air outlet of the wind box 9 is equipped with an air outlet pipe 10, and one end of the air outlet pipe 10 is connected to the air collecting ring 11. The wind box 9 has a built-in fan. After the wind box 9 is started, the airflow enters the interior of the wind box 9, and then the airflow enters the interior of the air collecting ring 11 through the air outlet pipe 10.

[0032] Please see Figure 1 - Figure 6 The device body 1 has a first motor 14 installed on its upper end, a first drive shaft 15 installed at the output end of the first motor 14, and a drive gear 16 installed at one end of the first drive shaft 15. The device body 1 has a vision device inside, and the vision device is electrically connected to the first motor 14. The vision device performs visual inspection on the threaded holes of the flange parts, identifies the position coordinates of the threaded holes, feeds them back to the control system, and then starts the first motor 14, which drives the first drive shaft 15 to rotate, thereby driving the drive gear 16 to rotate.

[0033] Please see Figure 3 - Figure 6 The main body 1 of the device has a toothed ring 17 movably installed inside, and the toothed ring 17 is meshed with the drive gear 16. The drive gear 16 rotates, and the drive gear 16 meshes with the toothed ring 17, causing the toothed ring 17 to rotate.

[0034] Please see Figure 3 - Figure 6 The toothed ring 17 has multiple sets of limiting posts 18 installed at its bottom end. The movable plate 5 has multiple sets of reserved holes 6, and the inner walls of the multiple sets of reserved holes 6 are movably connected to the outer walls of the multiple sets of limiting posts 18. The air outlet pipe 10 is a corrugated flexible hose. When the toothed ring 17 rotates, it drives the multiple sets of limiting posts 18 to move. The outer walls of the multiple sets of limiting posts 18 are movably connected to the inner walls of the multiple sets of reserved holes 6, so the movable plate 5 rotates.

[0035] Please see Figure 1 - Figure 7 Each of the multiple sets of limiting posts 18 has a cleaning seat 19 installed at its bottom end, and the inner wall of the multiple sets of cleaning seats 19 is movably connected to the outer wall of the multiple sets of electromagnetic posts 8. The multiple sets of limiting posts 18 move, which drives the multiple sets of cleaning seats 19 to move.

[0036] Please see Figure 2 - Figure 7A second motor 20 is installed inside the conveyor platform 36. A second drive shaft 21 is installed at the output end of the second motor 20. A transmission shaft 22 is movably installed inside the conveyor platform 36, and a toothed synchronous belt connects the transmission shaft 22 and the second drive shaft 21. Limiting shafts 24 are movably installed inside both sets of mounting brackets 23, and the outer walls of the two sets of limiting shafts 24 are threadedly connected to the inner walls of the two sets of moving seats 26. One set of limiting shafts 24 is connected to the second drive shaft 21 by a toothed synchronous belt, and the other set of limiting shafts 24 is connected to the transmission shaft 21 by a toothed synchronous belt. A toothed synchronous belt connects the two drive shafts 22. When the second motor 20 starts, it drives the second drive shaft 21 to rotate. The second drive shaft 21 is connected to the transmission shaft 22 and a set of limit shafts 24 via toothed synchronous belts. The transmission shaft 22 and the set of limit shafts 24 rotate. The transmission shaft 22 is connected to another set of limit shafts 24 via a toothed synchronous belt. The other set of limit shafts 24 rotates. The outer walls of the two sets of limit shafts 24 are threaded to the inner walls of the two sets of moving seats 26, and the two sets of moving seats 26 are displaced.

[0037] Please see Figure 2 - Figure 9 Both sets of mounting brackets 23 are equipped with toothed plates 25 at their upper ends. Both sets of movable seats 26 have two sets of movable cylinders 28 movably installed inside them. The multiple sets of movable cylinders 28 are connected by toothed synchronous belts. Each set of movable cylinders 28 extends to one end of the outer wall of the two sets of movable seats 26 and is equipped with a movable gear 29. The two sets of movable gears 29 are respectively engaged with the two sets of toothed plates 25. The two sets of movable seats 26 continuously move, and the two sets of movable gears 29 are respectively engaged with the two sets of toothed plates 25. The two sets of movable gears 29 rotate, thereby driving the two sets of movable cylinders 28 to rotate. The multiple sets of movable cylinders 28 are connected by toothed synchronous belts, so the multiple sets of movable cylinders 28 rotate synchronously.

[0038] Please see Figure 2 - Figure 9 Multiple sets of movable cylinders 28 are movably installed with telescopic columns 30 on their inner walls, and the outer walls of the multiple sets of telescopic columns 30 are threadedly connected to the inner walls of the multiple sets of movable cylinders 28. Limiting blocks 31 are movably installed on the inner walls of one end of the multiple sets of telescopic columns 30, and springs 32 are installed on one end of the multiple sets of limiting blocks 31. One end of the multiple sets of springs 32 is connected to the inner walls of the multiple sets of telescopic columns 30, and the other end of the multiple sets of limiting blocks 31 is connected to two sets of clamping plates 33. The multiple sets of movable cylinders 28 rotate synchronously, and the inner walls of the multiple sets of movable cylinders 28 are threadedly connected to the outer walls of the multiple sets of telescopic columns 30. The multiple sets of telescopic columns 30 move into the multiple sets of movable cylinders 28, thereby driving the two sets of clamping plates 33 to move.

[0039] Please see Figure 9 - Figure 10Both sets of movable seats 26 have symmetrically opened limit grooves 27 on their outer walls, and both sets of clamping plates 33 have limit plates 34 installed on their outer walls. The outer walls of the limit plates 34 are movably connected to the inner walls of multiple sets of limit grooves 27. The limit plates 34 cooperate with the limit grooves 27 to improve the stability of the clamping plates 33.

[0040] The working principle of this invention is as follows: First, the staff pre-processes the flange parts, removing impurities such as oil, rust, and oxide scale from the surface of the flange parts, focusing on cleaning bolt holes, sealing surfaces, etc., to ensure that the surface is dry and the roughness meets the standard, avoiding interference with the detection. Then, magnetization is performed. According to the possible defect direction of the flange, the circumferential, longitudinal, or combined magnetization method is selected, and appropriate current parameters are set. By energizing, using a magnetic yoke, or a coil, a magnetic field is generated in the flange to ensure that a leakage magnetic field is formed at the defect. Then, magnetic powder is applied. During the magnetization process, dry magnetic powder or wet magnetic suspension is applied simultaneously, so that the magnetic powder accumulates at the leakage magnetic field, clearly showing the defect. Afterwards, the staff observes and evaluates the surface of the flange parts, observes the magnetic traces under white light or ultraviolet light, distinguishes between real defects and false defects, and determines whether it is qualified according to relevant standards. Finally, the flange parts after flaw detection are demagnetized, and the magnetic powder on the outer wall of the flange parts is removed. After the outer wall of the flange part is cleaned with magnetic powder, the staff places the flange part between the two sets of clamping plates 33 and pushes the two sets of clamping plates 33 to move towards the two sets of moving seats 26 respectively, thereby pushing the multiple sets of limiting blocks 31 to move into the multiple sets of telescopic columns 30 respectively. The multiple sets of springs 32 generate pushing force on the multiple sets of limiting blocks 31 and the two sets of clamping plates 33 respectively, so that the flange part is fixed between the two sets of clamping plates 33. The elastic force of the springs 32 can adapt to flange parts of different sizes, improving the versatility of clamping. After the flange parts are fixed between the two sets of clamping plates 33, the vision device on the inner wall of the main body 1 visually inspects the threaded holes of the flange parts, and then the first motor 14 is started, driving the first drive shaft 15 to rotate, thereby driving the drive gear 16 to rotate. The drive gear 16 meshes with the gear ring 17. The gear ring 17 rotates, driving multiple sets of limiting posts 18 and multiple sets of cleaning seats 19 to move. The outer walls of the multiple sets of limiting posts 18 are movably connected to the inner walls of multiple sets of reserved holes 6, so the movable plate 5 rotates, thereby driving multiple sets of mounting posts 7 and multiple sets of electromagnetic posts 8 to move. And the air outlet pipe 10 is a corrugated flexible hose, so the movement of the movable plate 5 is not obstructed. After the movable plate 5 moves, the multiple sets of electromagnetic posts 8 correspond to the multiple sets of threaded holes of the flange parts, and the first motor 14 is turned off. When the first motor 14 is turned off, the hydraulic pump, multiple sets of electromagnetic columns 8 and the air box 9 are started. The hydraulic pump transmits hydraulic oil through the hydraulic pipe 3 to the inside of the hydraulic cylinder 2, causing the hydraulic column 4 to move out of the inside of the hydraulic cylinder 2, thereby driving the movable plate 5 to move downward, and in turn driving multiple sets of mounting columns 7, multiple sets of electromagnetic columns 8, multiple sets of branch pipes 12 and multiple sets of nozzles 13 to move downward. When the bellows 9 is started, the airflow enters the bellows 9 and then enters the air collecting ring 11 through the air outlet 10. The air collecting ring 11 inputs the airflow into the multiple branch pipes 12 respectively, and then the airflow is discharged from the multiple nozzles 13. After the multiple nozzles 13 move to the upper end of the multiple threaded holes, the airflow blows away the residual moisture (water in the wet magnetic suspension) on the inner wall of the multiple threaded holes or dries the damp area inside the thread groove. Then the movable plate 5 continues to move downward, and the multiple electromagnetic columns 8 enter the multiple threaded holes respectively. The multiple electromagnetic columns 8 absorb the residual magnetic powder inside the multiple threaded holes, avoid the residual magnetic powder inside the multiple threaded holes, and improve the subsequent processing effect of the flange parts. After the internal parts of the multiple sets of threaded holes are cleaned, the hydraulic column 4 drives the movable plate 5 to move upward, thereby moving the multiple sets of electromagnetic columns 8 and multiple sets of nozzles 13 out of the multiple sets of threaded holes. Then, the second motor 20 starts, driving the second drive shaft 21 to rotate. The second drive shaft 21 is connected to the transmission shaft 22 and a set of limit shafts 24 respectively through toothed synchronous belts. The transmission shaft 22 and the set of limit shafts 24 rotate. The transmission shaft 22 is connected to another set of limit shafts 24 through toothed synchronous belts. The other set of limit shafts 24 rotates. The outer walls of the two sets of limit shafts 24 are threadedly connected to the inner walls of the two sets of moving seats 26 respectively. The two sets of moving seats 26 move, thereby driving the two sets of clamping plates 3. 3. The flange parts are displaced, causing them to move out of the bottom area of ​​the movable plate 5 and onto the upper end of the conveyor belt 37. The two sets of movable seats 26 continue to move, and the two sets of movable gears 29 are respectively engaged with the two sets of toothed plates 25. The two sets of movable gears 29 rotate, thereby driving the two sets of movable cylinders 28 to rotate. The multiple sets of movable cylinders 28 are connected to each other by toothed synchronous belts, so the multiple sets of movable cylinders 28 rotate synchronously. The inner walls of the multiple sets of movable cylinders 28 are respectively threaded to the outer walls of the multiple sets of telescopic columns 30. The multiple sets of telescopic columns 30 move into the multiple sets of movable cylinders 28, thereby driving the two sets of clamping plates 33 to move, causing the flange parts to fall onto the upper end of the conveyor belt 37. The conveyor belt 37 rotates, transporting the flange parts to the next process. After the flange parts are moved out of the lower area of ​​the movable plate 5, the multiple sets of electromagnetic columns 8 and the bellows 9 are closed. When the electromagnetic columns 8 are energized, they generate a magnetic field that attracts magnetic particles in the thread groove. When the power is cut off during cleaning, the magnetic powder falls off naturally and into the collection box 35. The multiple sets of electromagnetic columns 8 continue to move upward and move to the ends of the multiple sets of cleaning seats 19. One end of the multiple sets of electromagnetic columns 8 moves into the interior of the multiple sets of cleaning seats 19. The multiple sets of cleaning seats 19 clean the outer walls of the multiple sets of electromagnetic columns 8, so that the magnetic powder remaining on the outer walls of the multiple sets of electromagnetic columns 8 falls into the collection box 35.

[0041] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the invention and are not intended to limit it. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the invention, but such modifications, substitutions, and variations are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A flange part flaw detection device, comprising a device main body (1), a movable plate (5) and a conveying platform (36), characterized in that: The device body (1) is movably installed with an activity plate (5), and the device body (1) is provided with a conveying platform (36) on one side. The bottom end of the activity plate (5) is installed with a plurality of installation columns (7), and the bottom end of each installation column (7) is installed with an electromagnetic column (8). The inside of the activity plate (5) is installed with a wind collecting ring (11), and the bottom end of the wind collecting ring (11) is installed with a plurality of branch pipes (12). The two sides of each branch pipe (12) are installed with a spray head (13) at one end. The conveying platform (36) is symmetrically provided with an installation frame (23) on the upper end, and each installation frame (23) is movably installed with a moving seat (26) on the upper end. Each moving seat (26) is movably installed with a clamping plate (33) on the upper end, and the conveying platform (36) is movably installed with a conveying belt (37) on the inner wall. The device body (1) is installed with a hydraulic cylinder (2) on the upper end, and the hydraulic cylinder (2) is installed with a hydraulic pipe (3) on the upper end. The hydraulic pipe (3) is connected with a hydraulic pump, and the inside of the hydraulic cylinder (2) is movably installed with a hydraulic column (4). The hydraulic column (4) is movably connected with the activity plate (5) at one end of the outer wall of the hydraulic cylinder (2). The device body (1) is installed with a wind box (9) on the upper end, and the wind box (9) is installed with an air outlet pipe (10) at the air outlet. One end of the air outlet pipe (10) is connected with the wind collecting ring (11).

2. The flange part inspection apparatus according to claim 1, characterized by: The device body (1) is installed with a first motor (14) on the upper end, and the output end of the first motor (14) is installed with a first driving shaft (15). One end of the first driving shaft (15) is installed with a driving gear (16), and the inside of the device body (1) is provided with a visual device. The visual device is electrically connected with the first motor (14).

3. The flange part inspection apparatus according to claim 2, characterized by: The inside of the device body (1) is movably installed with a gear ring (17), and the gear ring (17) is meshed and connected with the driving gear (16).

4. The flange part inspection apparatus according to claim 3, characterized by: The bottom end of the gear ring (17) is installed with a plurality of limiting columns (18), and the activity plate (5) is provided with a plurality of reserved holes (6). The inner walls of the plurality of reserved holes (6) are movably connected with the outer walls of the plurality of limiting columns (18), respectively. The air outlet pipe (10) is a corrugated flexible pipe.

5. The flange part inspection apparatus according to claim 4, characterized by: The bottom end of each limiting column (18) is installed with a cleaning seat (19), and the inner walls of the plurality of cleaning seats (19) are movably connected with the outer walls of the plurality of electromagnetic columns (8), respectively.

6. The flange part inspection apparatus according to claim 1, characterized by: The inside of the conveying platform (36) is installed with a second motor (20), and the output end of the second motor (20) is installed with a second driving shaft (21). The inside of the conveying platform (36) is movably installed with a transmission shaft (22), and the transmission shaft (22) and the second driving shaft (21) are connected with a toothed synchronous belt. The inside of each installation frame (23) is movably installed with a limiting shaft (24), and the outer walls of the two limiting shafts (24) are threadedly connected with the inner walls of the two moving seats (26), respectively. One limiting shaft (24) and the second driving shaft (21) are connected with a toothed synchronous belt, and the other limiting shaft (24) and the transmission shaft (22) are connected with a toothed synchronous belt.

7. The flange part inspection apparatus according to claim 6, characterized by: Two groups of said mounting frame (23) upper end is equipped with the toothed plate (25), two groups of said mobile seat (26) inside are movably installed two groups of movable cylinder (28), and multiple groups of movable cylinder (28) are connected between the toothed synchronous belt respectively, wherein two groups of said movable cylinder (28) extend to the outer wall one end of two groups of mobile seat (26) and are equipped with movable gear (29), and two groups of movable gear (29) are connected with two groups of toothed plate (25) respectively.

8. The flange part inspection apparatus according to claim 7, characterized by: Multiple groups of said movable cylinder (28) inner wall are movably installed with telescopic column (30), and multiple groups of telescopic column (30) outer wall are respectively connected with multiple groups of movable cylinder (28) inner wall by screw threads, multiple groups of said telescopic column (30) one end inner wall are movably installed with limit block (31), multiple groups of said limit block (31) one end are equipped with spring (32), and multiple groups of spring (32) one end are connected with multiple groups of telescopic column (30) inner wall, and multiple groups of said limit block (31) the other end are connected with two groups of clamping plate (33) respectively.

9. The flange part inspection apparatus according to claim 8, characterized by: Two groups of said mobile seat (26) outer wall are symmetrically provided with limit slot (27), two groups of said clamping plate (33) outer wall are equipped with limit plate (34), and the limit plate (34) outer wall is movably connected with multiple groups of limit slot (27) inner wall respectively, the device main part (1) bottom is equipped with collecting box (35).

10. A device for detecting a flaw in a flange part and a method of detecting the same, characterized by The use of any one of claims 1-9, which process comprises the following steps: S1: Flange part flaw detection: the flange part is magnetized after cleaning, the magnetic powder is sprayed to the outer wall of the flange part, the defects are shown, the magnetic marks are observed under white light or ultraviolet lamp, and the true defects and false defects are distinguished; S2: Flange part outer wall cleaning: demagnetize the flange part, and clean the flange part outer wall with magnetic powder; S3: Flange part thread hole cleaning: the flange part is placed between the two groups of clamping plates (33), and multiple groups of nozzles (13) and multiple groups of electromagnetic columns (8) are matched to clean multiple groups of thread holes; S4: Flange part transportation: two groups of mobile seats (26) drive the flange part to displace, the flange part moves to the upper end region of the conveyor belt (37), two groups of clamping plates (33) displace, the flange part falls on the upper end of the conveyor belt (37), the conveyor belt (37) runs, and the conveyor belt (37) transports the flange part to the next process.

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