A device and method for ultrasonic excitation of the inner wall of an air storage cylinder and synchronous magnetic force flow rust removal

Abstract

The application discloses a kind of for wind storage cylinder inner wall ultrasonic excitation and magnetic force flow synchronous derusting device and method in the field of large industrial container cleaning maintenance, to solve the technical problem that derusting exists dead angle, uneven grinding.The device includes: wind storage cylinder, total control cabinet and its connection ultrasonic-magnetic force flow derusting unit, multifunctional tool unit;Ultrasonic-magnetic force flow derusting unit includes the ultrasonic cavitation subunit for applying ultrasonic wave to the liquid medium inside wind storage cylinder, surrounds the outer periphery of the wind storage cylinder, and the magnetic force flow grinding unit for applying dynamic magnetic field to the magnetic abrasive injected into the wind storage cylinder cavity;Multifunctional tool unit includes bearing feeding platform, and self-adapting chuck and integrated tailstock installed on bearing feeding platform, the wind storage cylinder to be processed is installed between the two, and the bearing feeding platform drives the wind storage cylinder to be processed to rotate around its axis.The application is applied to railway and engineering machinery field, and can uniformly grind the inner wall of wind storage cylinder.

Description

Technical Field

[0001] This invention relates to a device and method for simultaneous ultrasonic excitation and magnetic flow rust removal of the inner wall of an air storage tank, belonging to the technical field of cleaning and maintenance of large industrial containers. Background Technology

[0002] Air reservoirs are core pressure-bearing components in rail transit vehicles, heavy commercial vehicles, and industrial pneumatic units, primarily used to store compressed air and stabilize unit pressure. Due to prolonged exposure to high-pressure, humid, and impurity-containing air environments, the inner walls of air reservoirs are highly susceptible to rust, scale, and dirt buildup. This corrosion not only reduces the effective volume and pressure resistance of the air reservoir but can also lead to pipe blockage or even safety accidents in severe cases. Therefore, regular, efficient, and non-destructive rust removal and cleaning of the air reservoir's inner walls is crucial for ensuring the safe operation of the equipment.

[0003] Currently, rust removal methods for the inner walls of air storage cylinders mainly include chemical pickling, mechanical grinding, sandblasting, and traditional magnetic abrasive grinding. However, existing technologies have many limitations when dealing with air storage cylinders with large length-to-diameter ratios and complex internal wall structures: chemical pickling causes environmental pollution and easily leads to over-corrosion or hydrogen embrittlement of the cylinder base material; mechanical grinding and sandblasting cannot penetrate deep into the cylinder, leaving cleaning dead zones and easily damaging the dimensional accuracy of the cylinder's inner wall; although traditional magnetic abrasive grinding uses magnetic abrasives for processing, the abrasives tend to agglomerate and adhere at the bottom of the cylinder or in localized areas, resulting in uneven grinding. Furthermore, traditional single magnetic fields cannot simultaneously achieve deep cleaning of the cylinder bottom and uniform grinding of the cylinder wall, and rust removal efficiency and surface quality need to be improved.

[0004] Therefore, achieving efficient and precise rust removal within a limited space without causing environmental pollution has become a pressing technical challenge. To address this issue, there is an urgent need to develop a new type of equipment capable of performing multi-technology synergistic rust removal on the inner wall of a small-diameter, sealed air storage tank, balancing rust removal effectiveness with environmental safety, in order to meet the high demands of equipment maintenance in industrial applications. Summary of the Invention

[0005] The purpose of this invention is to provide a device and method for simultaneous ultrasonic excitation and magnetic flow rust removal of the inner wall of an air storage cylinder, which can achieve automated, precise, and pollution-free cleaning of the inner wall of the air storage cylinder.

[0006] To achieve the above objectives, the present invention is implemented using the following technical solution.

[0007] In a first aspect, the present invention provides a device for simultaneous ultrasonic excitation and magnetic flow rust removal of the inner wall of an air storage cylinder, comprising an air storage cylinder, a main control cabinet, and an ultrasonic-magnetic flow rust removal unit and a multi-functional tooling unit connected to the main control cabinet. The ultrasonic-magnetic flow rust removal unit includes an ultrasonic cavitation subunit and a magnetic flow polishing unit. The ultrasonic cavitation subunit is used to apply ultrasonic waves to the liquid medium inside the air storage cylinder. The magnetic flow polishing unit surrounds the outer periphery of the air storage cylinder and is used to apply a dynamic magnetic field to the magnetic abrasive injected into the inner cavity of the air storage cylinder. The ultrasonic cavitation subunit and the magnetic flow polishing unit are respectively connected to the main control cabinet. The multifunctional tooling unit includes a carrying feed platform, an adaptive chuck and an integrated tailstock mounted on the carrying feed platform, and an air storage cylinder to be processed is installed between the adaptive chuck and the integrated tailstock. The carrying feed platform drives the air storage cylinder to rotate around its axis.

[0008] In conjunction with the first aspect, the ultrasonic cavitation subunit further includes an ultrasonic generator, a high-power ultrasonic transducer, and an amplitude transformer. The high-power ultrasonic transducer and the amplitude transformer are integrated in the middle of the integrated tailstock. The ultrasonic generator is connected to the high-power ultrasonic transducer, and the corresponding ultrasonic control module on the main control cabinet is connected to the signal of the ultrasonic generator.

[0009] In conjunction with the first aspect, the magnetic flow grinding unit further includes a magnetic field generating device and a magnetic abrasive supply and recovery device; The magnetic abrasive supply and recovery device is installed on the underside of the bearing feed platform; The magnetic field generating device includes a slider that can be mounted on a guide rail, an integrated bracket and an arc-shaped magnet fixed on the slider, a drive motor disposed below the slider, and a miniature electromagnetic vibrator disposed within the integrated bracket.

[0010] In conjunction with the first aspect, the arc-shaped magnet is further mounted on the integrated bracket on the slider and fitted onto the outside of the air storage cylinder; The miniature electromagnetic vibrator drives the arc-shaped magnet to vibrate radially along the air storage cylinder, and the drive motor drives the slider to reciprocate axially along the guide rail, thereby forming a composite magnetic field motion structure with superimposed axial movement and radial vibration.

[0011] In conjunction with the first aspect, the magnetic abrasive supply and recovery device further includes a magnetic flow raw liquid medium storage tank and a rust separation tank; The upper end of the magnetic flow raw liquid medium storage tank is connected to a stirring motor, and the lower end of the magnetic flow raw liquid medium storage tank is connected to a circulation pump, a flow regulating valve, and a pressure sensor. The upper end of the rust slag separation box is connected to the air storage cylinder, and the lower end of the rust slag separation box is connected to a vacuum pump. After the rust removal is completed, the vacuum pump draws the medium containing rust residue from the air storage cylinder to the rust residue separation box for separation. The clean medium after separation is returned to the magnetic flow original liquid medium storage box for recycling.

[0012] In conjunction with the first aspect, a magnetic needle is further provided in the inner cavity of the air storage cylinder. The magnetic needle forms a grinding fit with the inner wall of the air storage cylinder under the drive of the magnetic field generated by the arc magnet. The magnetic needle is injected into or discharged from the inner cavity of the air storage cylinder by the magnetic abrasive supply and recovery device.

[0013] In conjunction with the first aspect, the adaptive chuck is further equipped with gripping claws, and the end of the adaptive chuck is connected to a servo motor.

[0014] In conjunction with the first aspect, the main control cabinet further integrates an ultrasonic control module, a magnetic field generating device control module, a machine tool control module, and a magnetic abrasive supply and recovery device control module; The ultrasonic control module is signal-connected to the ultrasonic generator; the magnetic field generating device control module is signal-connected to the drive motor and the miniature electromagnetic vibrator; the machine tool control module is signal-connected to the servo motor that drives the adaptive chuck; and the magnetic abrasive supply and recovery device control module is signal-connected to the magnetic abrasive supply and recovery device, used to control the supply and recovery of the magnetic abrasive medium.

[0015] Secondly, a method for simultaneous ultrasonic excitation and magnetic flow rust removal of the inner wall of an air storage cylinder, employing the simultaneous ultrasonic excitation and magnetic flow rust removal device for the inner wall of an air storage cylinder as described in the first aspect, includes: According to the size of the air storage cylinder, select a suitable clamping claw, fix the air storage cylinder between the adaptive chuck and the integrated tailstock, and make the threaded hole of the air storage cylinder face upward. A liquid medium containing magnetic abrasive is injected into the air storage cylinder, and the ultrasonic cavitation subunit and the magnetic flow grinding unit are started simultaneously. After startup, the ultrasonic cavitation subunit radiates ultrasonic waves into the liquid medium to peel off and soften the rust layer in the inner wall of the air storage cylinder; the magnetic flow grinding unit drives the magnetic field generator to translate along the axial direction of the air storage cylinder through the magnetic field generator, and at the same time drives the magnetic field generator to vibrate at high frequency in the radial direction through the micro electromagnetic exciter, forming a two-degree-of-freedom composite magnetic field with superposition of axial movement and radial vibration. Driven by the dual-degree-of-freedom composite magnetic field, the magnetic abrasive jumps and slides horizontally at the bottom of the air storage cylinder. At the same time, the bearing feed platform drives the air storage cylinder to rotate intermittently at a certain angle according to the preset PLC program, thereby completing the rust removal of the inner wall. After the rust removal operation is completed, the magnetic flow grinding unit is turned on to extract the liquid medium and magnetic abrasive in the air storage cylinder and separate and recycle them. After the separation and recycling operation, clean water and compressed gas are introduced into the inner cavity of the air storage cylinder for cleaning and drying, thus completing the cleaning of the inner cavity.

[0016] In conjunction with the second aspect, further, the rust removal of the inner wall includes: The magnetic needle installed in the inner cavity of the air storage cylinder generates continuous jumping and horizontal sliding at the bottom of the air storage cylinder and on the inner wall surface of the air storage cylinder. When the magnetic field generating device moves upward and approaches the bottom of the air storage cylinder, the magnetic field strength increases instantaneously, and the magnetic needle is strongly attracted to detach from the bottom of the air storage cylinder and jumps. When the magnetic field generating device moves downward away from the bottom of the air storage cylinder, the magnetic field strength weakens, and the magnetic needle falls back to the bottom of the air storage cylinder under the combined action of gravity and ultrasonic cavitation microjets, and slides horizontally due to inertia to grind the bottom of the air storage cylinder. When the magnetic field generating device moves axially along the air storage cylinder, the magnetic needle is pulled by the magnetic field and moves horizontally along the inner wall surface of the air storage cylinder to grind the inner wall.

[0017] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: This invention proposes a dual-unit, fully synchronous coupled operation, abandoning the traditional step-by-step processing mode. Through a PLC control unit, ultrasonic cavitation and magnetic grinding are simultaneously started and stopped, operating in parallel throughout the entire process: ultrasonic waves break up stubborn rust in real time, while magnetic abrasives instantly grind and peel away loose rust layers. The two processes are superimposed in real time, avoiding secondary adhesion of rust chips from step-by-step processing. Rust removal efficiency is improved by more than 50% compared to step-by-step processes, balancing processing speed and quality. Simultaneously, a dual-degree-of-freedom composite magnetic field design is adopted, with the magnetic field possessing both axial translation and radial vibration motion modes. The magnetic field strength undergoes periodic dynamic changes, driving the magnetic abrasive to continuously jump and slide, eliminating abrasive accumulation and jamming defects at the structural level. This ensures no blind spots in cleaning the cylinder bottom and cylinder wall, significantly improving the uniformity of grinding the inner wall.

[0018] In terms of process adaptability, the ultrasonic power, magnet vibration parameters, and axial feed speed can be adjusted synchronously to accommodate lightly, moderately, and heavily corroded air storage cylinders. The matching adaptive tooling has a wide clamping range and is compatible with various sizes of air storage cylinders. In particular, it solves the technical problems of difficult and incomplete rust removal on the inner wall of small-diameter (<19mm) deep and long cylinders (maximum 1200mm). At the same time, the multi-dimensional motion tooling can also adapt to cylinders of different specifications. The entire processing adopts a green and flexible approach, ensuring no damage to the workpiece and meeting emission standards, achieving clean operation, and protecting the safety and health of equipment and operators.

[0019] In addition, the device is highly automated. The ultrasonic and magnetic field parameters are integrated and managed through the central controller of the main control cabinet. The entire process from clamping, rust removal to cleaning can be automated or semi-automated, with good processing consistency and significantly reducing the labor intensity of operators. Attached Figure Description

[0020] Figure 1 The figure shown is an isometric schematic diagram of the overall layout of the equipment provided in an embodiment of the present invention; Figure 2 The diagram shown is a structural schematic of the ultrasonic-magnetic flow rust removal operation provided in an embodiment of the present invention; Figure 3 The diagram shown is a schematic diagram of the magnetic abrasive supply and recovery device provided in an embodiment of the present invention. Figure 4 The diagram shown is a process flow chart of the rust removal method provided in an embodiment of the present invention; In the diagram: 1. Main control cabinet; 2. Ultrasonic control module; 3. Magnetic field generator control module; 4. Machine tool control module; 5. Magnetic abrasive supply and recovery device control module; 6. Adaptive chuck; 7. Air storage cylinder; 8. Integrated tailstock; 9. Arc magnet; 10. Ultrasonic generator; 11. Drive motor; 12. Magnetic abrasive supply and recovery device; 13. Pipeline; 14. Integrated bracket; 15. Slider; 16. Bearing feed platform; 17. Guide rail; 18. High-power ultrasonic transducer; 19. Amplitude bar; 20. Magnetic needle; 21. Air storage cylinder rotation direction; 22. Magnetic needle radial vibration direction; 23. Servo motor; 24. Inner wall; 25. Miniature electromagnetic vibrator; 26. Stirring motor; 27. Magnetic flow raw liquid medium storage tank; 28. Rust slag separation tank; 29. ​​Pressure sensor; 30. Flow regulating valve; 31. Circulation pump; 32. Vacuum pump. Detailed Implementation

[0021] The technical solution of the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the embodiments of the present invention and the specific features in the embodiments are detailed descriptions of the technical solution of the present invention, rather than limitations thereof. In the absence of conflict, the embodiments of the present invention and the technical features in the embodiments can be combined with each other.

[0022] The term "and / or" simply describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. Additionally, the character " / " generally indicates that the preceding and following related objects have an "or" relationship. Example 1

[0023] For ease of description, the descriptions in this embodiment are based on the placement of the rust removal device for the inner wall of the small-diameter sealed air storage cylinder under normal operating conditions. See [link to documentation]. Figure 1 and Figure 2 This embodiment introduces a device for simultaneous ultrasonic excitation and magnetic flow rust removal of the inner wall of an air storage cylinder. It includes an air storage cylinder 7, a main control cabinet 1, and an ultrasonic-magnetic flow rust removal unit and a multi-functional tooling unit connected to the main control cabinet 1. The main control cabinet 1 is located on one side of the device. The control parts of the ultrasonic-magnetic flow rust removal unit and the multi-functional tooling unit are highly integrated in the main control cabinet 1, realizing centralized and automated operation. The operator can centrally control the operating parameters of the entire device (such as ultrasonic frequency, magnetic field strength, vibration frequency, feed speed, and rotation angle of the air storage cylinder 7) through the main control cabinet 1 to ensure the stability and efficiency of the rust removal process.

[0024] The multi-functional tooling unit includes a support feed platform 16, an adaptive chuck 6 and an integrated tailstock 8 mounted on the support feed platform 16. The air storage cylinder 7 to be processed is installed between the adaptive chuck 6 and the integrated tailstock 8. The adaptive chuck 6 is equipped with clamping jaws of different curvatures (not shown in the figure). By changing the clamping jaws of different curvatures, it is compatible with air storage cylinders 7 of various sizes, solving the technical problem of difficult rust removal on the inner wall 24 of small-diameter, deep, and long air storage cylinders 7. The end of the adaptive chuck 6 is connected to a servo motor 23. During the rust removal process, the support feed platform 1 drives the air storage cylinder 7 to rotate intermittently around its axis (i.e., the rotation direction 21 of the air storage cylinder rotates at a certain angle), so that the magnetic abrasive injected into the inner cavity of the air storage cylinder 7 can sequentially cover the entire surface of the inner wall 24, achieving the purpose of complete coverage.

[0025] The ultrasonic-magnetic flow rust removal unit includes an ultrasonic cavitation subunit and a magnetic flow abrasive unit, both of which are signal-connected to the main control cabinet 1 and control the main control cabinet 1 to perform coordinated operations. The ultrasonic cavitation subunit includes an ultrasonic generator 10, a high-power ultrasonic transducer 18, and an amplitude transformer 19. The high-power ultrasonic transducer 18 and the amplitude transformer 19 are integrated in the middle of the integrated tailstock 8. The ultrasonic generator 10 is signal-connected to the ultrasonic control module 2 on the main control cabinet 1. During rust removal, the ultrasonic cavitation subunit radiates high-frequency ultrasonic waves into the liquid medium inside the air reservoir 7 through the high-power ultrasonic transducer 18, generating a strong ultrasonic cavitation effect in the liquid medium. This cavitation effect breaks down the dense rust layer in the inner wall 24 of the air reservoir 7, thereby peeling off and softening the rust layer on the inner wall 24. Simultaneously, the acoustic flow stirring effect generated by the ultrasonic cavitation effect keeps the magnetic abrasive in a suspended and dispersed state in the liquid medium, preventing the magnetic abrasive from agglomerating and adhering at the bottom of the air reservoir 7.

[0026] The magnetic flow abrasive unit surrounds the outer periphery of the air storage cylinder 7 and includes a magnetic field generating device and a magnetic abrasive supply and recovery device 12. The magnetic abrasive supply and recovery device 12 is installed on the lower side of the bearing feed platform 16. The magnetic field generating device includes a slider 15 that can be mounted on the guide rail 17, an integrated bracket 14 fixed on the slider 15 and an arc magnet 9, a drive motor 11 disposed below the slider 15, and a miniature electromagnetic vibrator 25 disposed in the integrated bracket 14. The arc magnet 9 is mounted on the integrated bracket 14 on the slider 15 and is fitted onto the outside of the air storage cylinder 7.

[0027] Before the rust removal operation, the magnetic abrasive supply and recovery device 12 injects a liquid medium containing magnetic needles 20 into the inner cavity of the air storage cylinder 7. If the magnetic abrasive is insufficient, fresh abrasive is added at any time.

[0028] During the rust removal process, the arc-shaped magnet 9 is driven by the micro electromagnetic vibrator 25 to vibrate at high frequency along the radial direction of the air storage cylinder 7 (i.e., the radial vibration direction 22 of the magnetic needle) under the control of the magnetic field generating device. At the same time, the drive motor 11 drives the slider 15 to reciprocate along the axial direction of the guide rail 17, thereby forming a dual-degree-of-freedom composite magnetic field motion structure with superposition of axial movement and radial vibration.

[0029] See Figure 3 The magnetic abrasive supply and recovery device 12 includes a magnetic flow raw liquid medium storage tank 27 and a rust separation tank 28. The upper end of the magnetic flow raw liquid medium storage tank 27 is connected to a stirring motor 26 to achieve uniform stirring of the medium and prevent the abrasive from settling during storage. The lower end of the magnetic flow raw liquid medium storage tank 27 is connected to a circulation pump 31, a flow regulating valve 30 and a pressure sensor 29 via a pipe 13. The circulation pump 31 drives the liquid medium to flow, the flow regulating valve 30 controls the supply flow rate, and the pressure sensor 29 monitors the pipeline pressure in real time to ensure that the medium is injected into the inner cavity of the air storage cylinder 7 at a suitable pressure and flow rate.

[0030] The upper end of the rust slag separation box 28 is connected to the air storage cylinder 7, and the lower end of the rust slag separation box 28 is connected to a vacuum pump 32. After the rust removal is completed, the medium containing rust slag in the cylinder is drawn into the rust slag separation box 28 by the vacuum pump 32 for separation. The clean medium after separation is returned to the magnetic flow original liquid medium storage box 27 for recycling, which saves abrasive consumption, realizes green and clean operation, and avoids environmental pollution.

[0031] The main control cabinet 1 integrates an ultrasonic control module 2, a magnetic field generating device control module 3, a machine tool control module 4, and a magnetic abrasive supply and recovery device control module 5.

[0032] The ultrasonic control module 2 is signal-connected to the ultrasonic generator 10, and the magnetic field generating device control module 3 is signal-connected to the drive motor 11 and the miniature electromagnetic vibrator 25. This drives the arc-shaped magnet 9 to translate along the axial direction of the air storage cylinder, while simultaneously driving the arc-shaped magnet 9 to vibrate at high frequency in the radial direction via the miniature electromagnetic vibrator 25, forming a dual-degree-of-freedom composite magnetic field with superimposed axial movement and radial vibration. The machine tool control module 4 is signal-connected to the servo motor 23 that drives the adaptive chuck 6, and can be programmed with a PLC to drive the air storage cylinder 7 to rotate intermittently by a certain angle. The magnetic abrasive supply and recovery device control module 5 is signal-connected to the magnetic abrasive supply and recovery device 12, used to control the supply and recovery of the magnetic abrasive medium. The coordinated operation of these control modules achieves fully automated operation from clamping and rust removal to cleaning.

[0033] This embodiment utilizes a complete rust removal process that combines ultrasonic excitation with magnetic flow to ensure that the inner wall 24 of the air storage cylinder 7 achieves a cleanliness level of over 95%, demonstrating excellent rust removal performance and industrial application value. Example 2

[0034] See Figure 4 A method for simultaneous ultrasonic excitation and magnetic flow rust removal of the inner wall of an air storage cylinder includes the following steps: Step 10: According to the size of the air storage cylinder 7, select a suitable clamping claw, fix the air storage cylinder 7 between the adaptive chuck 6 and the integrated tailstock 8, and make the threaded hole of the air storage cylinder 7 face upward. Step 20: The operator sets the operating parameters of the entire device through the main control cabinet 1, such as ultrasonic frequency, magnetic field strength, vibration frequency, feed speed, and rotation angle of the air storage cylinder 7. Step 30: Inject a liquid medium containing magnetic abrasive into the air storage cylinder 7, and simultaneously start the ultrasonic cavitation subunit and the magnetic flow grinding unit; After startup, the ultrasonic cavitation subunit radiates ultrasonic waves into the liquid medium through a high-power ultrasonic transducer 18 to peel off and soften the rust layer on the inner wall 24 of the air storage cylinder 7; the magnetic flow grinding unit drives the magnetic field generator, i.e., the arc-shaped magnet 9, to translate along the axial direction of the air storage cylinder through a magnetic field generator 25, and at the same time drives the arc-shaped magnet 9 to vibrate at high frequency in the radial direction through a micro electromagnetic vibrator 25, forming a two-degree-of-freedom composite magnetic field with superposition of axial movement and radial vibration; Driven by the dual-degree-of-freedom composite magnetic field, the magnetic abrasive jumps and slides horizontally at the bottom of the air storage cylinder 7. At the same time, the bearing feed platform 16 drives the air storage cylinder 7 to rotate intermittently at a certain angle according to the preset PLC program, thereby completing the rust removal of the inner wall 24. Specifically, the magnetic needle 20 continuously bounces and slides horizontally at the bottom of the air storage cylinder 7 and on the surface of the inner wall 24 of the air storage cylinder 7. When the arc magnet 9 moves upward towards the bottom of the air storage cylinder 7, the magnetic field strength increases instantaneously, and the magnetic needle 20 is strongly attracted to detach from the bottom of the air storage cylinder 7 and bounces. When the arc magnet 9 moves downward away from the bottom of the cylinder, the magnetic field strength weakens, and the magnetic needle 20 falls back to the bottom of the air storage cylinder 7 under the combined action of gravity and ultrasonic cavitation microjets, and slides horizontally due to inertia to grind the bottom of the air storage cylinder 7. As the arc magnet 9 moves along the axial direction of the air storage cylinder 7, the area of ​​magnetic field action changes accordingly, and the magnetic needle 20 is pulled by the magnetic field and moves horizontally along the surface of the inner wall 24 of the air storage cylinder 7 to grind the inner wall 24.

[0035] By leveraging the synchronous synergy of the dual-degree-of-freedom composite magnetic field and the ultrasonic cavitation effect, the magnetic needle 20 alternates between jumping and sliding. At the same time, ultrasonic cavitation breaks up stubborn rust in real time, and magnetic abrasives grind and peel off loose rust layers in real time. The two processes are superimposed in real time and work in parallel throughout the process, effectively avoiding the problem of secondary adhesion of rust chips during step-by-step processing, and greatly improving rust removal efficiency.

[0036] Step 40: After the rust removal operation is completed, turn on the magnetic abrasive supply and recovery device 12 in the magnetic flow grinding unit to extract the liquid medium and magnetic abrasive in the air storage cylinder 7 and separate and recover them through the rust slag separation box 28. After the separation and recovery operation, clean water and compressed gas are introduced into the inner cavity of the air storage cylinder 7 for cleaning and drying to complete the inner cavity cleaning.

[0037] Step 50: After all steps 10 to 40 are completed, an endoscope can be used for quality inspection. If the quality inspection is qualified, the air storage cylinder 7 is removed and the operation ends. If the quality inspection is unqualified, return to step 20 to set parameters and repeat step 30 to perform rust removal again until the inspection is qualified.

[0038] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims. All of these forms are within the protection scope of the present invention.

Claims

1. A device for simultaneous ultrasonic excitation and magnetic flow rust removal of the inner wall of an air storage cylinder, characterized in that, It includes an air storage cylinder (7), a main control cabinet (1), and an ultrasonic-magnetic flow rust removal unit and a multi-functional tooling unit connected to the main control cabinet (1); The ultrasonic-magnetic flow rust removal unit includes an ultrasonic cavitation subunit and a magnetic flow polishing unit. The ultrasonic cavitation subunit is used to apply ultrasonic waves to the liquid medium inside the air storage cylinder (7). The magnetic flow polishing unit surrounds the outer periphery of the air storage cylinder (7) and is used to apply a dynamic magnetic field to the magnetic abrasive injected into the inner cavity of the air storage cylinder (7). The ultrasonic cavitation subunit and the magnetic flow polishing unit are respectively connected to the main control cabinet (1) via signal. The multifunctional tooling unit includes a carrying feed platform (16), an adaptive chuck (6) and an integrated tailstock (8) mounted on the carrying feed platform (16), and a storage cylinder (7) to be processed is mounted between the adaptive chuck (6) and the integrated tailstock (8). The carrying feed platform (16) drives the storage cylinder (7) to be processed to rotate around its axis.

2. The device for simultaneous ultrasonic excitation and magnetic flow rust removal of the inner wall of an air storage cylinder according to claim 1, characterized in that, The ultrasonic cavitation subunit includes an ultrasonic generator (10), a high-power ultrasonic transducer (18), and an amplitude transformer (19). The high-power ultrasonic transducer (18) and the amplitude transformer (19) are integrated in the middle of the integrated tailstock (8). The ultrasonic generator (10) is connected to the high-power ultrasonic transducer (18), and the corresponding ultrasonic control module (2) on the main control cabinet (1) is connected to the signal of the ultrasonic generator (10).

3. The device for simultaneous ultrasonic excitation and magnetic flow rust removal of the inner wall of an air storage cylinder according to claim 1, characterized in that, The magnetic flow abrasive unit includes a magnetic field generating device and a magnetic abrasive supply and recovery device (12). The magnetic abrasive supply and recovery device (12) is installed on the underside of the bearing feed platform (16); The magnetic field generating device includes a slider (15) that can be mounted on a guide rail (17), an integrated bracket (14) fixed on the slider (15) and an arc magnet (9), a drive motor (11) disposed below the slider (15), and a miniature electromagnetic vibrator (25) disposed in the integrated bracket (14).

4. The device for simultaneous ultrasonic excitation and magnetic flow rust removal of the inner wall of an air storage cylinder according to claim 3, characterized in that, The arc-shaped magnet (9) is mounted on the integrated bracket (14) on the slider (15) and is fitted onto the outside of the air storage cylinder (7); The micro electromagnetic vibrator (25) drives the arc magnet (9) to vibrate radially along the air storage cylinder (7), and the drive motor (11) drives the slider (15) to reciprocate along the axial direction of the guide rail (17), thereby forming a composite magnetic field motion structure with superposition of axial movement and radial vibration.

5. The device for simultaneous ultrasonic excitation and magnetic flow rust removal of the inner wall of an air storage cylinder according to claim 3, characterized in that, The magnetic abrasive supply and recovery device (12) includes a magnetic flow raw liquid medium storage tank (27) and a rust slag separation tank (28). The upper end of the magnetic flow raw liquid storage tank (27) is connected to a stirring motor (26), and the lower end of the magnetic flow raw liquid storage tank (27) is connected to a circulating pump (31), a flow regulating valve (30) and a pressure sensor (29). The upper end of the rust separation box (28) is connected to the air storage cylinder (7), and the lower end of the rust separation box (28) is connected to a vacuum pump (32). After the rust removal is completed, the vacuum pump (32) draws the medium containing rust residue in the air storage cylinder (7) to the rust residue separation box (28) for separation. The clean medium after separation is returned to the magnetic flow original liquid medium storage box (27) for recycling.

6. The device for simultaneous ultrasonic excitation and magnetic flow rust removal of the inner wall of an air storage cylinder according to claim 4, characterized in that, A magnetic needle (20) is provided in the inner cavity of the air storage cylinder (7). The magnetic needle (20) forms a grinding fit with the inner wall (24) of the air storage cylinder (7) under the drive of the magnetic field generated by the arc magnet (9). The magnetic needle (20) is injected into or discharged from the inner cavity of the air storage cylinder (7) through the magnetic abrasive supply and recovery device (12).

7. The device for simultaneous ultrasonic excitation and magnetic flow rust removal of the inner wall of an air storage cylinder according to claim 1, characterized in that, The adaptive chuck (6) is equipped with gripping claws, and the end of the adaptive chuck (6) is connected to a servo motor (23).

8. The device for simultaneous ultrasonic excitation and magnetic flow rust removal of the inner wall of an air storage cylinder according to claim 3, characterized in that, The main control cabinet (1) integrates an ultrasonic control module (2), a magnetic field generating device control module (3), a machine tool control module (4), and a magnetic abrasive supply and recovery device control module (5). The ultrasonic control module (2) is connected to the ultrasonic generator (10) by signal; the magnetic field generating device control module (3) is connected to the drive motor (11) and the micro electromagnetic vibrator (25) by signal; the machine tool control module (4) is connected to the servo motor (23) that drives the adaptive chuck (6) by signal; the magnetic abrasive supply and recovery device control module (5) is connected to the magnetic abrasive supply and recovery device (12) by signal, and is used to control the supply and recovery of magnetic abrasive media.

9. A method for simultaneous ultrasonic excitation and magnetic flow rust removal of the inner wall of an air storage cylinder, characterized in that, Rust removal using the ultrasonic excitation and magnetic flow synchronous rust removal device for the inner wall of an air storage cylinder as described in any one of claims 1 to 8 includes: According to the size of the air storage cylinder (7), select the appropriate clamping claw, fix the air storage cylinder (7) between the adaptive chuck (6) and the integrated tailstock (8), and make the threaded hole of the air storage cylinder (7) face upward; Inject a liquid medium containing magnetic abrasive into the air storage cylinder (7) and simultaneously start the ultrasonic cavitation subunit and the magnetic flow grinding unit; After startup, the ultrasonic cavitation subunit radiates ultrasonic waves into the liquid medium to peel off and soften the rust layer in the inner wall (24) of the air storage cylinder (7); the magnetic flow grinding unit drives the magnetic field generator to translate along the axial direction of the air storage cylinder (7) through the magnetic field generator, and at the same time drives the magnetic field generator to vibrate at high frequency in the radial direction through the micro electromagnetic vibrator (25), forming a dual-degree-of-freedom composite magnetic field with superposition of axial movement and radial vibration; Driven by the dual-degree-of-freedom composite magnetic field, the magnetic abrasive jumps and slides horizontally at the bottom of the air storage cylinder (7), while the bearing feed platform (16) drives the air storage cylinder (7) to rotate intermittently at a certain angle according to the preset PLC program, thereby completing the rust removal of the inner wall (24). After the rust removal operation is completed, the magnetic flow grinding unit is turned on to extract the liquid medium and magnetic abrasive in the air storage cylinder (7) and separate and recycle them; After the separation and recycling operation, clean water and compressed gas are introduced into the inner cavity of the air storage cylinder (7) for cleaning and drying, thus completing the cleaning of the inner cavity.

10. The method for simultaneous ultrasonic excitation and magnetic flow rust removal of the inner wall of an air storage cylinder according to claim 9, characterized in that, The rust removal of the inner wall (24) includes: The magnetic needle (20) provided in the inner cavity of the air storage cylinder (7) generates continuous jumping and horizontal sliding at the bottom of the air storage cylinder (7) and on the surface of the inner wall (24) of the air storage cylinder (7). When the magnetic field generating device moves upward and approaches the bottom of the air storage cylinder (7), the magnetic field strength increases instantaneously, and the magnetic needle (20) is strongly attracted to detach from the bottom of the air storage cylinder (7) and jumps. When the magnetic field generating device moves downward away from the bottom of the air storage cylinder (7), the magnetic field strength weakens, and the magnetic needle (20) falls back to the bottom of the air storage cylinder (7) under the combined action of gravity and ultrasonic cavitation microjets, and slides horizontally due to inertia to grind the bottom of the air storage cylinder (7). When the magnetic field generating device moves axially along the air storage cylinder (7), the magnetic needle (20) is pulled by the magnetic field and moves horizontally along the inner wall (24) surface of the air storage cylinder (7) to grind the inner wall (24).

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