A magnetic flaw detection system

Abstract

The present invention relates to the field of magnetic particle inspection technology, specifically a magnetic inspection system, including a fixed frame, a working box and a detection head, a mounting frame fixedly mounted on the bottom wall of the sliding frame, a motor fixedly mounted on the outer top wall of the working box, a reciprocating screw fixedly mounted on the output shaft of the motor, a first piston cylinder and a second piston cylinder fixedly mounted on the outer top wall of the working box, a plurality of drainage holes are provided on the fixed frame, a drainage frame fixedly mounted on the bottom wall of the fixed frame, and a recovery box and a wastewater tank are respectively placed under the fixed frame. The present invention adds a cleaning frame to the mounting frame to rinse the inspected materials, thereby not only reducing labor intensity but also improving inspection efficiency; two push-acting switches are used to control two solenoid valves to facilitate the separate recovery of magnetic suspension and wastewater, and a scraper is used to recover magnetic powder in the wastewater, saving inspection costs.

Description

Technical Field

[0001] The present invention relates to the technical field of magnetic particle flaw detection, in particular to a magnetic flaw detection system. Background Art

[0002] Magnetic particle inspection utilizes the interaction between the leakage magnetic field at the defects of the workpiece and the magnetic powder. It takes advantage of the difference in magnetic permeability between the surface and near-surface defects of steel products (such as cracks, slag inclusions, hairline, etc.) and the magnetic permeability of steel. After magnetization, the magnetic field at the discontinuity of these materials will be distorted, forming a leakage magnetic field on the surface of the workpiece where some magnetic flux leaks, thereby attracting magnetic powder to form magnetic powder accumulation at the defect - magnetic mark. Under appropriate lighting conditions, the position and shape of the defect are revealed. By observing and interpreting the accumulation of these magnetic powders, magnetic particle inspection is achieved.

[0003] In the existing technology, magnetic suspension is used in magnetic particle inspection. The magnetic suspension remaining on the workpiece will make the workpiece surface magnetic, affecting the subsequent use of the workpiece. The dirt formed by the magnetic suspension that is not cleaned will also affect the next flaw detection. Therefore, the material after being sprayed with the magnetic suspension needs to be cleaned manually, which not only increases labor but also reduces the efficiency of detection.

[0004] Therefore, a magnetic flaw detection system is proposed. Summary of the Invention

[0005] The object of the present invention is to provide a magnetic flaw detection system, which solves the problems raised in the above-mentioned background technology by timely cleaning the inspected materials on the cleaning rack of the mounting rack.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A magnetic flaw detection system comprises a fixed frame, a working box and a detection head, wherein a loading platform is slidably mounted on the fixed frame, the loading platform is connected to a box door, a sliding frame is slidably installed on the top wall of the working box, a mounting frame is fixedly mounted on the bottom wall of the sliding frame, a detection head is fixedly mounted on the bottom wall of the mounting frame, a spraying frame and a cleaning frame are respectively mounted on the mounting frame, a motor is fixedly mounted on the outer top wall of the working box, a reciprocating screw is fixedly mounted on the output shaft of the motor, a threaded hole matching the reciprocating screw is provided on the sliding frame, a first piston cylinder and a second piston cylinder are respectively fixedly mounted on the outer top wall of the working box, a plurality of drain holes are provided on the fixed frame, a drainage frame is fixedly mounted on the bottom wall of the fixed frame, and a recovery box and a waste water tank are respectively placed under the fixed frame.

[0008] The motor is used to drive the reciprocating screw to rotate. When the reciprocating screw rotates, the sliding frame will slide back and forth, and the sliding frame will drive the mounting frame to move back and forth, thereby realizing the back and forth movement of the detection head, spraying frame, and cleaning frame. The added cleaning frame can flush the materials after the inspection, which not only reduces the labor intensity of subsequent workers, but also improves the efficiency of inspection.

[0009] Preferably, two linkage plates are symmetrically fixedly installed on the outer walls of both sides of the sliding frame, and the first piston rod and the second piston rod are movably inserted into the ends of the first piston cylinder and the second piston cylinder close to the motor, and the first piston rod and the second piston rod are respectively fixedly connected to the two linkage plates.

[0010] The back-and-forth movement of the sliding frame is used to drive the movement of the first piston rod and the second piston rod, thereby achieving reciprocating changes in the pressure in the first piston cylinder and the second piston cylinder without additional driving parts, spraying the magnetic suspension and cleaning liquid, and subsequent feeding work, thereby reducing production costs.

[0011] Preferably, a first solenoid valve is connected between the recovery box and the drainage rack, a second solenoid valve is connected between the waste water tank and the drainage rack, two fixed plates are symmetrically fixedly installed on the inner top wall of the working box, and a push-action switch is installed on the outer wall of the two fixed plates close to each other.

[0012] Before the detection begins, the first solenoid valve is open and the second solenoid valve is closed. The magnetic suspension sprayed by the spraying rack will be recovered by the recovery box. When the mounting rack follows the sliding rack to move toward the box door, one of the push switches will be pressed, so that the first solenoid valve is closed and the second solenoid valve is opened. When the mounting rack drives each device to reset, the cleaning water sprayed by the cleaning rack carries the flushed magnetic suspension into the wastewater tank to realize wastewater recovery. Such separate recycling not only protects the environment but also improves the utilization rate of raw materials and reduces the cost of detection.

[0013] Preferably, a first spring rod is connected between the two push switches and the two fixing plates respectively.

[0014] The first spring rod can play a buffering role, preventing the mounting bracket from pressing the push switch with too much force, thereby protecting the push switch and improving the quality of detection.

[0015] Preferably, a liquid inlet pipe is connected between the end of the first piston cylinder and the recovery box, a liquid outlet pipe is connected between the end of the first piston cylinder and the spray rack, a water inlet pipe is fixedly installed at the front end of the second piston cylinder, and a water outlet pipe is connected between the front end of the second piston cylinder and the cleaning rack, and a one-way liquid valve is respectively provided on the liquid inlet pipe, liquid outlet pipe, water inlet pipe and water outlet pipe.

[0016] A liquid inlet pipe is connected between the end of the first piston cylinder and the recovery box, and a liquid outlet pipe is connected between the end of the first piston cylinder and the spray rack. This connection is used to press the magnetic suspension liquid out when the first piston rod moves into the first piston cylinder, spray it from the spray rack, and sprinkle it on the material. When the mounting rack moves toward the box door, the magnetic suspension liquid will be sprayed to cooperate with the detection. On the contrary, when the second piston rod moves into the second piston cylinder, clean water will be sucked from the outside through the water inlet pipe. When the second piston rod moves to the outside of the second piston cylinder, the clean water will be transported from the water outlet pipe to the cleaning rack and sprayed on the material. Cleaning work will be carried out only when the mounting rack moves away from the box door. Cooperating with the previous solenoid valve control, the efficiency and quality of the detection and cleaning are further improved.

[0017] Preferably, an air outlet pipe is connected between the front end of the first piston cylinder and the recovery box, an air inlet pipe is fixedly installed at the front end of the first piston cylinder, the air outlet pipe is located at one end away from the first piston cylinder and is connected to multiple dispersion pipes, and one-way air valves are respectively installed on the air outlet pipe and the air inlet pipe.

[0018] The air pressure in the other half of the first piston cylinder is used to fill the recovery box with air. When the first piston rod moves toward the outside of the first piston cylinder, the air in the first piston cylinder is discharged from the air outlet pipe and then discharged through multiple dispersion pipes. The bubbles generated by the airflow are used to stir the magnetic suspension in the recovery box, thereby improving the quality of detection.

[0019] Preferably, a third piston cylinder is fixedly installed below the fixed frame, a third piston rod is movably inserted into the third piston cylinder, and one end of the third piston rod movably penetrates the side wall of the waste water tank, a filter is fixedly installed in the waste water tank, a mounting plate is fixedly installed on the end of the third piston rod away from the third piston cylinder, a scraper is installed on the bottom wall of the mounting plate, the end of the second piston cylinder and the end of the third piston cylinder are connected with a connecting pipe, and a material receiving box is connected to one side of the waste water tank.

[0020] When the second piston rod moves toward the outside of the second piston cylinder, the air pressure in a part of the second piston cylinder decreases, and the air in the third piston cylinder enters the second piston cylinder through the connecting pipe. The third piston rod is sucked into the third piston cylinder, thereby driving the scraper to scrape the magnetic powder accumulated on the filter screen into the material receiving box, thereby realizing the recovery of raw materials.

[0021] Preferably, the corners of the filter screen close to the material receiving box are inclined downward.

[0022] The corners of the filter are inclined downward so that when the scraper scrapes the magnetic powder there, it can flow into the receiving box together with the gravity of the magnetic powder itself and the residual water stains, thereby improving the recovery rate.

[0023] Preferably, a second spring rod is connected between the mounting plate and the scraper, and the angle between the scraper and the filter is between degrees and degrees.

[0024] The installation method of 80 degrees can make the scraper scrape the material on the filter screen more smoothly, further improving the recovery rate.

[0025] Preferably, a return spring is sleeved on the third piston rod.

[0026] The return spring sleeved on the third piston rod can improve the return efficiency of the third piston rod, and can also ensure that the third piston rod can be returned to its original position, thereby further improving the recovery rate.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] 1. A cleaning rack is added to the mounting rack to flush the materials after testing, which not only reduces labor intensity but also improves the efficiency of testing.

[0029] 2. Two pressure switches are used to control two solenoid valves to facilitate the separate recovery of magnetic suspension and wastewater. At the same time, a scraper is used to recover the magnetic powder in the wastewater, saving detection costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a front cross-sectional view of the present invention;

[0031] Figure 2 A top view of the present invention;

[0032] Figure 3 It is a structural schematic diagram of the mounting frame part of the present invention;

[0033] Figure 4 It is an enlarged view of the structure of part A in the present invention;

[0034] Figure 5 This is an enlarged view of the structure of part B in the present invention;

[0035] Figure 6 This is an enlarged view of the structure of part C in the present invention.

[0036] In the figure: 1. fixed frame; 2. working box; 3. loading platform; 4. box door; 5. sliding frame; 6. mounting frame; 7. detection head; 8. spraying frame; 9. cleaning frame; 10. motor; 11. first piston cylinder; 12. second piston cylinder; 13. drainage frame; 14. recovery box; 15. waste water tank; 16. first piston rod; 17. second piston rod; 18. reciprocating screw; 19. linkage plate; 20. liquid inlet pipe; 21. liquid outlet pipe; 22. water inlet pipe; 23. water outlet pipe; 24. fixed plate; 25. first spring rod; 26. push switch; 27. first solenoid valve; 28. second solenoid valve; 29. ​​air outlet pipe; 30. air inlet pipe; 31. dispersion pipe; 32. connecting pipe; 33. third piston cylinder; 34. third piston rod; 35. mounting plate; 36. scraper; 37. Second spring rod; 38, return spring; 39, filter screen; 40, material receiving box. DETAILED DESCRIPTION

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0038] See also Figures 1 to 6 The present invention provides a magnetic flaw detection system, and the technical solution is as follows:

[0039] A magnetic flaw detection system includes a fixed frame 1, a working box 2 and a detection head 7. A loading platform 3 is slidably mounted on the fixed frame 1, and the loading platform 3 is connected to a box door 4. A sliding frame 5 is slidably installed on the top wall of the working box 2, a mounting frame 6 is fixedly mounted on the bottom wall of the sliding frame 5, and a detection head 7 is fixedly mounted on the bottom wall of the mounting frame 6. A spraying frame 8 and a cleaning frame 9 are respectively mounted on the mounting frame 6. A motor 10 is fixedly mounted on the outer top wall of the working box 2, and a reciprocating screw 18 is fixedly mounted on the output shaft of the motor 10. A threaded hole matching the reciprocating screw 18 is provided on the sliding frame 5. A first piston cylinder 11 and a second piston cylinder 12 are respectively fixedly mounted on the outer top wall of the working box 2. A plurality of drainage holes are provided on the fixed frame 1, and a drainage frame 13 is fixedly mounted on the bottom wall of the fixed frame 1. A recovery box 14 and a waste water tank 15 are respectively placed under the fixed frame 1.

[0040] The motor 10 is used to drive the reciprocating screw 18 to rotate. When the reciprocating screw 18 rotates, the sliding frame 5 will slide back and forth, and the sliding frame 5 drives the mounting frame 6 to move back and forth, thereby realizing the back and forth movement of the detection head 7, the spraying frame 8, and the cleaning frame 9. The additional cleaning frame 9 can rinse the materials after the inspection, which not only reduces the labor intensity of subsequent workers, but also improves the efficiency of the inspection.

[0041] As an embodiment of the present invention, refer to Figure 2 Two linkage plates 19 are symmetrically fixedly installed on the outer walls of both sides of the sliding frame 5. The first piston rod 16 and the second piston rod 17 are movably inserted into the first piston cylinder 11 and the second piston cylinder 12 at one end close to the motor 10. The first piston rod 16 and the second piston rod 17 are respectively fixedly connected to the two linkage plates 19.

[0042] The back-and-forth movement of the sliding frame 5 is used to drive the first piston rod 16 and the second piston rod 17 to move, thereby realizing the reciprocating change of the pressure in the first piston cylinder 11 and the second piston cylinder 12 without additional driving parts, spraying the magnetic suspension and the cleaning liquid, and the subsequent feeding work, thereby reducing production costs. It is worth noting that the magnetic suspension is divided into water suspension and oil suspension, and a suitable cleaning liquid can be selected according to different magnetic suspensions.

[0043] As an embodiment of the present invention, refer to Figure 1 and Figure 4 A first solenoid valve 27 is connected between the recovery box 14 and the drainage rack 13, a second solenoid valve 28 is connected between the waste water tank 15 and the drainage rack 13, and two fixed plates 24 are symmetrically fixedly installed on the inner top wall of the working box 2, and a push switch 26 is installed on the outer wall of the two fixed plates 24 close to each other.

[0044] Before the detection begins, the first solenoid valve 27 is open and the second solenoid valve 28 is closed. The magnetic suspension sprayed by the spray rack 8 will be recovered by the recovery box 14. When the mounting rack 6 follows the sliding rack 5 to move toward the box door 4, one of the push switches 26 will be pressed, so that the first solenoid valve 27 is closed and the second solenoid valve 28 is opened. When the mounting rack 6 drives each device to reset, the cleaning water sprayed by the cleaning rack 9 carries the flushed magnetic suspension into the waste water tank 15, realizing wastewater recovery. Such separate recovery not only protects the environment but also improves the utilization rate of raw materials and reduces the cost of detection.

[0045] As an embodiment of the present invention, refer to Figure 4 A first spring rod 25 is connected between the two push switches 26 and the two fixing plates 24 respectively.

[0046] The first spring rod 25 can play a buffering role, preventing the mounting bracket 6 from pressing the pressure switch 26 with too much force, thereby protecting the pressure switch 26 and improving the quality of detection.

[0047] As an embodiment of the present invention, refer to Figure 1 and Figure 2A liquid inlet pipe 20 is connected between the end of the first piston cylinder 11 and the recovery box 14, a liquid outlet pipe 21 is connected between the end of the first piston cylinder 11 and the spray rack 8, a water inlet pipe 22 is fixedly installed at the front end of the second piston cylinder 12, and a water outlet pipe 23 is connected between the front end of the second piston cylinder 12 and the cleaning rack 9. One-way liquid valves are respectively provided on the liquid inlet pipe 20, the liquid outlet pipe 21, the water inlet pipe 22 and the water outlet pipe 23.

[0048] A liquid inlet pipe 20 is connected between the end of the first piston cylinder 11 and the recovery box 14, and a liquid outlet pipe 21 is connected between the end of the first piston cylinder 11 and the spray rack 8. This connection is used to press the magnetic suspension liquid out when the first piston rod 16 moves into the first piston cylinder 11, spray it from the spray rack 8, and sprinkle it on the material, so that when the mounting rack 6 moves toward the box door 4, the magnetic suspension liquid will be sprayed to cooperate with the detection. On the contrary, when the second piston rod 17 moves into the second piston cylinder 12, clean water will be sucked from the outside through the water inlet pipe 22. When the second piston rod 17 moves to the outside of the second piston cylinder 12, the clean water will be transported from the water outlet pipe 23 to the cleaning rack 9 and sprayed on the material, so that the cleaning work will be carried out only when the mounting rack 6 moves away from the box door 4. In conjunction with the previous solenoid valve control, the efficiency and quality of the cleaning of the detection are further improved.

[0049] As an embodiment of the present invention, refer to Figure 1 and Figure 2 An air outlet pipe 29 is connected between the front end of the first piston cylinder 11 and the recovery box 14, and an air inlet pipe 30 is fixedly installed at the front end of the first piston cylinder 11. The air outlet pipe 29 is located at one end away from the first piston cylinder 11 and is connected to multiple dispersion pipes 31. One-way air valves are respectively installed on the air outlet pipe 29 and the air inlet pipe 30.

[0050] The air pressure in the other half of the space of the first piston cylinder 11 is used to fill the recovery box 14 with air. When the first piston rod 16 moves toward the outside of the first piston cylinder 11, the air in the first piston cylinder 11 is discharged from the air outlet pipe 29 and then discharged through multiple dispersion pipes 31. The bubbles generated by the airflow are used to stir the magnetic suspension in the recovery box 14, thereby improving the quality of detection.

[0051] As an embodiment of the present invention, refer to Figure 1 、 Figure 2 and Figure 5A third piston cylinder 33 is fixedly installed below the fixed frame 1, and a third piston rod 34 is movably inserted into the third piston cylinder 33, and one end of the third piston rod 34 movably penetrates the side wall of the wastewater tank 15, and a filter screen 39 is fixedly installed in the wastewater tank 15. A mounting plate 35 is fixedly installed on the end of the third piston rod 34 away from the third piston cylinder 33, and a scraper 36 is installed on the bottom wall of the mounting plate 35. The end of the second piston cylinder 12 and the end of the third piston cylinder 33 are connected by a connecting pipe 32, and a material receiving box 40 is connected to one side of the wastewater tank 15.

[0052] When the second piston rod 17 moves toward the outside of the second piston cylinder 12, the air pressure in a part of the second piston cylinder 12 decreases, and the air in the third piston cylinder 33 enters the second piston cylinder 12 through the connecting pipe 32. The third piston rod 34 is sucked into the third piston cylinder 33, thereby driving the scraper 36 to scrape the magnetic powder accumulated on the filter screen 39 into the material receiving box 40, thereby realizing the recovery of the raw materials.

[0053] As an embodiment of the present invention, refer to Figure 6 The corners of the filter screen 39 close to the material receiving box 40 are downwardly inclined.

[0054] The corners of the filter screen 39 are inclined downward so that when the scraper 36 scrapes the magnetic powder there, the magnetic powder can flow into the receiving box 40 together with its own gravity and residual water stains, thereby improving the recovery rate.

[0055] As an embodiment of the present invention, refer to Figure 5 A second spring rod 37 is connected between the mounting plate 35 and the scraper 36 , and the angle between the scraper 36 and the filter screen 39 is between 45 degrees and 60 degrees.

[0056] The installation method at an angle of 45 to 60 degrees can make the scraper 36 scrape the material on the filter screen 39 more smoothly, further improving the recovery rate.

[0057] As an embodiment of the present invention, refer to Figure 6 A return spring 38 is sleeved on the third piston rod 34 .

[0058] The return spring 38 sleeved on the third piston rod 34 can improve the return efficiency of the third piston rod 34 and also ensure that the third piston rod 34 can be returned to its original position, thereby further improving the recovery rate.

[0059] Working principle: The motor 10 is used to drive the reciprocating screw 18 to rotate. When the reciprocating screw 18 rotates, the sliding frame 5 will slide back and forth, and the sliding frame 5 will drive the mounting frame 6 to move back and forth, thereby realizing the back and forth movement of the detection head 7, the spraying frame 8, and the cleaning frame 9. The additional cleaning frame 9 can rinse the materials after the inspection, which not only reduces the labor intensity of subsequent workers, but also improves the efficiency of the inspection.

[0060] Before the detection begins, the first solenoid valve 27 is open and the second solenoid valve 28 is closed. The magnetic suspension sprayed by the spray rack 8 will be recovered by the recovery box 14. When the mounting rack 6 follows the sliding rack 5 to move toward the box door 4, one of the push switches 26 will be pressed, so that the first solenoid valve 27 is closed and the second solenoid valve 28 is opened. When the mounting rack 6 drives each device to reset, the cleaning water sprayed by the cleaning rack 9 carries the flushed magnetic suspension into the waste water tank 15, realizing wastewater recovery. Such separate recovery not only protects the environment but also improves the utilization rate of raw materials and reduces the cost of detection.

[0061] A liquid inlet pipe 20 is connected between the end of the first piston cylinder 11 and the recovery box 14, and a liquid outlet pipe 21 is connected between the end of the first piston cylinder 11 and the spray rack 8. This connection is used to press the magnetic suspension liquid out when the first piston rod 16 moves into the first piston cylinder 11, spray it from the spray rack 8, and sprinkle it on the material, so that when the mounting rack 6 moves toward the box door 4, the magnetic suspension liquid will be sprayed to cooperate with the detection. On the contrary, when the second piston rod 17 moves into the second piston cylinder 12, clean water will be sucked from the outside through the water inlet pipe 22. When the second piston rod 17 moves to the outside of the second piston cylinder 12, the clean water will be transported from the water outlet pipe 23 to the cleaning rack 9 and sprayed on the material, so that the cleaning work will be carried out only when the mounting rack 6 moves away from the box door 4. In conjunction with the previous solenoid valve control, the efficiency and quality of the cleaning of the detection are further improved.

[0062] The air pressure in the other half of the space of the first piston cylinder 11 is used to fill the recovery box 14 with air. When the first piston rod 16 moves toward the outside of the first piston cylinder 11, the air in the first piston cylinder 11 is discharged from the air outlet pipe 29 and then discharged through multiple dispersion pipes 31. The bubbles generated by the airflow are used to stir the magnetic suspension in the recovery box 14, thereby improving the quality of detection.

[0063] When the second piston rod 17 moves toward the outside of the second piston cylinder 12, the air pressure in a part of the second piston cylinder 12 decreases, and the air in the third piston cylinder 33 enters the second piston cylinder 12 through the connecting pipe 32. The third piston rod 34 is sucked into the third piston cylinder 33, thereby driving the scraper 36 to scrape the magnetic powder accumulated on the filter screen 39 into the material receiving box 40, thereby realizing the recovery of the raw materials.

[0064] The electrical components appearing in this article are all connected to the external main controller and 220V AC power through a transformer, and the main controller can be a conventional known device that controls a computer, etc. The product model provided by the present invention is only used for the purpose of this technical solution based on the structural characteristics of the product. The product will be adjusted and modified after purchase to make it more compatible with and in line with the technical solution of the present invention. It is a technical solution for the best application of this technical solution. The model of its product can be replaced and modified according to the technical parameters required. It is well known to technical personnel in this field. Therefore, technical personnel in this field can clearly obtain the corresponding use effect through the technical solution provided by the present invention.

[0065] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A magnetic flaw detection system comprising a fixed frame (1), a working box (2) and a detection head (7), characterized in that: A loading platform (3) is slidably mounted on the fixed frame (1), and the loading platform (3) is connected to a box door (4). A sliding frame (5) is slidably mounted on the top wall of the working box (2), a mounting frame (6) is fixedly mounted on the bottom wall of the sliding frame (5), a detection head (7) is fixedly mounted on the bottom wall of the mounting frame (6), a spraying frame (8) and a cleaning frame (9) are respectively mounted on the mounting frame (6), a motor (10) is fixedly mounted on the outer top wall of the working box (2), and the A reciprocating screw (18) is fixedly mounted on the output shaft of the motor (10); a threaded hole matching the reciprocating screw (18) is provided on the sliding frame (5); a first piston cylinder (11) and a second piston cylinder (12) are fixedly mounted on the outer top wall of the working box (2); a plurality of drainage holes are provided on the fixed frame (1); a drainage frame (13) is fixedly mounted on the bottom wall of the fixed frame (1); and a recovery box (14) and a waste water tank (15) are respectively placed below the fixed frame (1); An air outlet pipe (29) is connected between the front end of the first piston cylinder (11) and the recovery box (14); an air inlet pipe (30) is fixedly installed at the front end of the first piston cylinder (11); the air outlet pipe (29) is located at an end away from the first piston cylinder (11) and is connected to a plurality of dispersion pipes (31); and one-way air valves are respectively installed on the air outlet pipe (29) and the air inlet pipe (30); A third piston cylinder (33) is fixedly installed below the fixed frame (1), a third piston rod (34) is movably inserted into the third piston cylinder (33), and one end of the third piston rod (34) movably penetrates the side wall of the waste water tank (15), a filter screen (39) is fixedly installed in the waste water tank (15), a mounting plate (35) is fixedly installed on the end of the third piston rod (34) away from the third piston cylinder (33), a scraper (36) is installed on the bottom wall of the mounting plate (35), the end of the second piston cylinder (12) and the end of the third piston cylinder (33) are connected to a connecting pipe (32), and one side of the waste water tank (15) is connected to a material receiving box (40).

2. A magnetic flaw detection system according to claim 1, characterized in that: Two interlocking plates (19) are symmetrically fixedly installed on the outer walls of both sides of the sliding frame (5); a first piston rod (16) and a second piston rod (17) are movably inserted at one end of the first piston cylinder (11) and the second piston cylinder (12) close to the motor (10); the first piston rod (16) and the second piston rod (17) are respectively fixedly connected to the two interlocking plates (19).

3. A magnetic flaw detection system according to claim 1, characterized in that: A first solenoid valve (27) is connected between the recovery box (14) and the drainage rack (13), a second solenoid valve (28) is connected between the waste water box (15) and the drainage rack (13), two fixed plates (24) are symmetrically fixedly installed on the inner top wall of the working box (2), and a pressure switch (26) is installed on the outer wall of the two fixed plates (24) on the side close to each other.

4. A magnetic flaw detection system according to claim 3, characterized in that: A first spring rod (25) is connected between the two push switches (26) and the two fixing plates (24) respectively.

5. The magnetic flaw detection system according to claim 1, characterized in that: A liquid inlet pipe (20) is connected between the end of the first piston cylinder (11) and the recovery box (14), a liquid outlet pipe (21) is connected between the end of the first piston cylinder (11) and the spray rack (8), a water inlet pipe (22) is fixedly installed at the front end of the second piston cylinder (12), and a water outlet pipe (23) is connected between the front end of the second piston cylinder (12) and the cleaning rack (9), and one-way liquid valves are respectively provided on the liquid inlet pipe (20), the liquid outlet pipe (21), the water inlet pipe (22) and the water outlet pipe (23).

6. A magnetic flaw detection system according to claim 1, characterized in that: The corners of the filter screen (39) close to the material receiving box (40) are in a downward slanting shape.

7. The magnetic flaw detection system according to claim 1, characterized in that: A second spring rod (37) is connected between the mounting plate (35) and the scraper (36), and the angle between the scraper (36) and the filter (39) is between 45 degrees and 60 degrees.

8. The magnetic flaw detection system according to claim 1, characterized in that: The third piston rod (34) is sleeved with a return spring (38).

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