Micro-arc oxidation bubble eliminating device

Abstract

The utility model relates to a micro-arc oxidation bubble eliminating device which comprises a bubble removing tank, an opening is formed in the top of the bubble removing tank, a liquid inlet mechanism is arranged above one side of the bubble removing tank, a liquid outlet mechanism is arranged below one side of the bubble removing tank, a centrifugal mechanism is arranged at the bottom of the bubble removing tank, and an ultrasonic oscillation module is arranged on the side portion of the bubble removing tank. The liquid inlet mechanism is used for conveying and putting electrolyte in the electrolyte pool into the bubble removing tank, the centrifugal mechanism is used for centrifugally stirring the electrolyte in the bubble removing tank to form rotational flow, the ultrasonic oscillation module is used for generating vibration to promote cavitation of micro bubbles, and the liquid outlet mechanism is used for enabling the electrolyte subjected to bubble removing to flow back into the electrolyte pool. Therefore, the circulating defoaming treatment of the electrolyte is realized. Electrolyte is input into the defoaming tank through the liquid inlet mechanism, rotational flow is formed through stirring of the centrifugal mechanism to enable bubbles to be gathered, high-frequency vibration generated by the ultrasonic vibration module is matched to enable tiny bubbles to be cavitated and broken, centrifugal separation and ultrasonic vibration are in synergistic effect, defoaming efficiency is remarkably improved, and tiny bubble residues are avoided.

Description

Technical Field

[0001] This utility model relates to the field of micro-arc oxidation processing technology, specifically a micro-arc oxidation bubble elimination device. Background Technology

[0002] Micro-arc oxidation is a surface treatment technology that uses a specific electrolyte and metal materials such as aluminum alloys and magnesium alloys as anodes. High voltage is applied to cause arc discharge on the material surface, generating instantaneous high temperature and high pressure, which promotes the in-situ growth of a ceramic film layer on the metal surface, thereby significantly improving the material's hardness, wear resistance, corrosion resistance and insulation properties.

[0003] Micro-arc oxidation electrolytes are prone to bubble generation. These bubbles alter the electric field distribution, leading to uneven discharge and variations in the thickness and performance of the micro-arc oxidation film. Bubbles also hinder ion transport, reducing the film formation rate and potentially creating pores or defects within the film, decreasing its density and corrosion resistance. Current technologies typically employ mechanical stirring or the addition of defoaming agents for static defoaming to eliminate bubbles in the electrolyte. However, this defoaming process is time-consuming, lacks continuity, and is therefore inefficient. Utility Model Content

[0004] The purpose of this invention is to provide a micro-arc oxidation bubble elimination device, which effectively solves the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution.

[0006] A micro-arc oxidation bubble elimination device includes a defoaming tank with an opening at the top, an inlet mechanism on the upper side of one side, an outlet mechanism on the lower side, a centrifugal mechanism at the bottom, and an ultrasonic vibration module on the side. The inlet mechanism is used to transport electrolyte from the electrolyte pool into the defoaming tank, the centrifugal mechanism is used to centrifuge and agitate the electrolyte in the defoaming tank to form a vortex, the ultrasonic vibration module is used to generate vibration to cavitate microbubbles, and the outlet mechanism is used to return the defoamed electrolyte to the electrolyte pool, thereby realizing the circulating defoaming treatment of the electrolyte.

[0007] Furthermore, the liquid inlet mechanism includes a first pump, an inlet pipe, and a dispensing pipe. A first mounting base is fixed to the side of the defoaming tank. The first pump is mounted on the first mounting base. One end of the inlet pipe is connected to the electrolyte tank, and the other end is connected to the input port of the first pump. One end of the dispensing pipe is connected to the output port of the first pump, and the other end extends to the top of the defoaming tank.

[0008] Furthermore, the centrifugal mechanism includes a shaft, a circular seat, centrifugal blades, and a drive device. The shaft is rotatably mounted at the bottom of the defoaming tank and extends vertically downwards to the bottom of the defoaming tank. The circular seat is fixed to the top of the shaft, and several centrifugal blades are evenly distributed on the outer peripheral wall of the circular seat. The drive device is located at the bottom of the defoaming tank and is used to drive the shaft to rotate.

[0009] Furthermore, the drive unit includes a U-shaped frame, a drive motor, and a coupling. The U-shaped frame is fixed to the bottom of the defoaming tank, the drive motor is fixed on the U-shaped frame, and the output shaft of the drive motor is connected to the bottom end of the shaft through the coupling. Two legs are symmetrically fixed to the bottom of the defoaming tank, and the legs are in an inverted U-shape.

[0010] Furthermore, the ultrasonic oscillation module includes an ultrasonic generator, a transducer, and an amplitude transformer. The ultrasonic generator is installed on the outside of the defoaming tank, the transducer is installed on the ultrasonic generator and electrically connected to the ultrasonic generator, and the amplitude transformer is installed on the transducer and extends through into the defoaming tank.

[0011] Furthermore, the liquid discharge mechanism includes a second pump, a liquid discharge pipe, and a liquid return pipe. A second mounting base is fixed to the side of the defoaming tank, and the second pump is fixed on the second mounting base. One end of the liquid discharge pipe is connected to the bottom of the defoaming tank, and the other end is connected to the input port of the second pump. One end of the liquid return pipe is connected to the output port of the second pump, and the other end is connected to the electrolyte pool.

[0012] Furthermore, a filter basket is provided at the top opening of the defoaming tank, which is used to filter the electrolyte that is fed into the defoaming tank through the dispensing pipe.

[0013] Furthermore, the filter basket fits perfectly with the top opening of the defoaming tank, and the filter basket is slidably installed inside the top opening of the defoaming tank. Support plates are evenly distributed on the periphery of the filter basket near its top, and the support plates are in contact with and block the top of the defoaming tank.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows.

[0015] This invention introduces electrolyte into the defoaming tank through an inlet mechanism, uses a centrifugal mechanism to create a swirling flow that causes bubbles to aggregate, and combines this with high-frequency vibrations generated by an ultrasonic oscillation module to cause the microbubbles to cavitate and break down. The combined effect of centrifugal separation and ultrasonic vibration significantly improves defoaming efficiency and avoids microbubble residue.

[0016] In this invention, the filter basket installed at the top opening of the defoaming tank can filter impurities from the input electrolyte. At the same time, its filter wire can break up large bubbles, preventing impurities from affecting the quality of the membrane layer. It combines filtration and preliminary defoaming functions, improving the subsequent defoaming effect and processing quality.

[0017] This invention utilizes a filter basket, a liquid inlet mechanism, a centrifugal mechanism, an ultrasonic oscillation module, and a liquid outlet mechanism to work together to form a closed-loop processing flow of liquid inlet, filtration, centrifugal defoaming, ultrasonic cavitation, and reflux. It can operate continuously without manual intervention, significantly improving the automation level and processing efficiency of defoaming, and meeting the needs of micro-arc oxidation processing for continuous defoaming of electrolyte. Attached Figure Description

[0018] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this utility model;

[0019] Figure 2 for Figure 1 One of the structural cross-sectional diagrams shown omitting the legs;

[0020] Figure 3 for Figure 2 Enlarged schematic diagram of the structure at point A in the diagram;

[0021] Figure 4 for Figure 1 The second schematic diagram of the structure shown omits the leg frame;

[0022] Figure 5 for Figure 4 Enlarged schematic diagram of the structure at point B.

[0023] In the diagram: 1. Defoaming tank; 11. Stand; 2. Filter basket; 21. Support plate; 3. Liquid inlet mechanism; 31. First mounting base; 32. First pump; 33. Liquid inlet pipe; 34. Dispensing pipe; 4. Liquid outlet mechanism; 41. Second mounting base; 42. Second pump; 43. Liquid outlet pipe; 44. Liquid return pipe; 5. Centrifugal mechanism; 51. Shaft; 52. Round seat; 53. Centrifugal impeller; 54. Drive device; 541. U-shaped frame; 542. Drive motor; 543. Coupling; 6. Ultrasonic oscillation module; 61. Ultrasonic generator; 62. Transducer; 63. Amplitude bar. Detailed Implementation

[0024] Please see Figures 1-5 This utility model provides a micro-arc oxidation bubble elimination device. The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0025] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connection" and "installation" should be interpreted broadly. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. Furthermore, "connection" can be a direct connection or an indirect connection through an intermediate medium. "Fixed" means that the relative positional relationship remains unchanged after the connection. The directional terms mentioned in the embodiments of this utility model, such as "inner," "outer," "top," and "bottom," are only for reference to the directions in the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of this utility model, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0026] In this embodiment of the invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" and "second" may explicitly or implicitly include one or more of that feature.

[0027] The micro-arc oxidation bubble elimination device includes a defoaming tank 1 with an opening at the top. The main body of the defoaming tank 1 is made of 316L stainless steel with an anti-corrosion coating on the inner wall. A liquid inlet mechanism 3 is located on the upper side of the defoaming tank 1, and a liquid outlet mechanism 4 is located on the lower side. A centrifugal mechanism 5 is located at the bottom of the defoaming tank 1, and an ultrasonic vibration module 6 is located on the side of the defoaming tank 1. The liquid inlet mechanism 3 is used to transport and add electrolyte from the electrolyte pool to the defoaming tank 1. The centrifugal mechanism 5 is used to centrifuge and agitate the electrolyte in the defoaming tank 1 to form a vortex. The ultrasonic vibration module 6 is used to generate vibration to promote the cavitation of microbubbles. The liquid outlet mechanism 4 is used to return the defoamed electrolyte to the electrolyte pool, thereby realizing the circulating defoaming treatment of the electrolyte.

[0028] The electrolyte containing a large number of bubbles in the electrolyte pool is guided into the defoaming tank 1 by the liquid inlet mechanism 3. The centrifugal mechanism 5 stirs the electrolyte in the defoaming tank 1 to form a centrifugal vortex. The centrifugal force separates the bubbles in the electrolyte and makes them gather in the central low-pressure area. The ultrasonic vibration module 6 generates high-frequency vibration, which causes the tiny bubbles in the electrolyte to produce a cavitation effect, accelerates the bubble coalescence and rises to the liquid surface to burst, and avoids incomplete removal of tiny bubbles in the electrolyte. After the bubbles burst, the air is discharged from the top opening of the defoaming tank 1. The defoamed electrolyte is returned to the electrolyte pool through the liquid outlet mechanism 4, realizing the circulation and defoaming of the electrolyte. There is no defoaming interval and no waiting is required, which significantly improves the continuity and efficiency of defoaming. The synergistic defoaming method of centrifugal separation and ultrasonic vibration effectively improves the defoaming effect.

[0029] Specifically, the liquid inlet mechanism 3 includes a first pump 32, an inlet pipe 33, and a dispensing pipe 34. A first mounting base 31 is fixed on the side of the defoaming tank 1. The first pump 32 is mounted on the first mounting base 31. The first pump 32 is a corrosion-resistant centrifugal pump with a rated flow rate of 50-100 L / min and a head of 10 m. The speed is adjusted by a frequency converter to adapt to different processing volume requirements. One end of the inlet pipe 33 is connected to the electrolyte pool, and the other end is connected to the input port of the first pump 32. One end of the dispensing pipe 34 is connected to the output port of the first pump 32, and the other end extends to the top of the defoaming tank 1. Through the operation of the first pump 32, the electrolyte in the electrolyte pool can be pumped into the defoaming tank 1 in sequence through the inlet pipe 33 and the dispensing pipe 34.

[0030] The dispensing pipe 34 extends above the defoaming tank 1, allowing the electrolyte to be dispensed into the defoaming tank 1 from the top opening.

[0031] Specifically, a filter basket 2 is provided at the top opening of the defoaming tank 1. The filter basket 2 is used to filter the electrolyte that is fed into the defoaming tank 1 through the delivery pipe 34. By setting the filter basket 2 at the top opening of the defoaming tank 1, the electrolyte fed into the defoaming tank 1 can be filtered to remove particulate impurities generated in the electrolyte, so as to avoid impurities affecting the quality of the membrane layer. At the same time, when the electrolyte passes through the filter basket 2, the filter wire on the filter basket 2 can break up large bubbles, achieving two goals at once.

[0032] In addition, the filter basket 2 is properly matched with the top opening of the defoaming tank 1. The filter basket 2 is slidably installed in the top opening of the defoaming tank 1. Support plates 21 are evenly distributed on the periphery of the filter basket 2 near its top. The support plates 21 are in contact with and block the top of the defoaming tank 1.

[0033] The filter basket 2 is placed into the top opening of the defoaming tank 1 from top to bottom. The support plate 21 cooperates with the top of the defoaming tank 1 to support and limit the filter basket 2 in the top opening of the defoaming tank 1, so that the filter basket 2 has the ability to resist the impact of electrolyte and ensure the stability during filtration. In addition, this installation method makes the filter basket 2 detachable. When impurities accumulate in the filter basket 2 to a certain extent, the filter basket 2 can be pulled upward and removed directly from the top opening of the defoaming tank 1, which is convenient for cleaning the impurities accumulated in the filter basket 2.

[0034] Specifically, the centrifugal mechanism 5 includes a shaft 51, a circular seat 52, centrifugal blades 53, and a drive device 54. The shaft 51 is rotatably mounted at the bottom of the defoaming tank 1 and extends vertically downward to the bottom of the defoaming tank 1. The circular seat 52 is fixed on the top of the shaft 51. Several centrifugal blades 53 are evenly distributed on the outer peripheral wall of the circular seat 52. The drive device 54 is located at the bottom of the defoaming tank 1 and is used to drive the shaft 51 to rotate.

[0035] The drive unit 54 includes a U-shaped frame 541, a drive motor 542, and a coupling 543. The U-shaped frame 541 is fixed to the bottom of the defoaming tank 1, and the drive motor 542 is fixed on the U-shaped frame 541. The drive motor 542 is a variable frequency speed control motor with a rated power of 0.5-1.5kW and a speed range of 0-3000r / min.

[0036] The output shaft of the drive motor 542 is connected to the bottom end of the shaft 51 via a coupling 543.

[0037] The drive motor 542 operates, and its output shaft drives the shaft 51 to rotate under the transmission connection of the coupling 543. The rotating shaft 51 drives the round seat 52 and the centrifugal blade 53 to rotate. The centrifugal blade 53 stirs the electrolyte to form a spiral upward swirling flow. Under the action of centrifugal force, the bubbles gather towards the liquid surface. The large bubbles rise rapidly due to buoyancy and burst. At the same time, the swirling flow enhances the disturbance of the electrolyte and accelerates the gas-liquid separation.

[0038] In addition, two legs 11 are symmetrically fixed to the bottom of the debubbling tank 1. The legs 11 are in an inverted U shape. The legs 11 support and raise the debubbling tank 1 to make room for the arrangement of the drive device 54.

[0039] Specifically, the ultrasonic oscillation module 6 includes an ultrasonic generator 61, a transducer 62, and an amplitude transformer 63. The ultrasonic generator 61 is installed on the outside of the defoaming tank 1. The ultrasonic generator 61 is equipped with a digital control panel, with the frequency adjustable in the range of 20-40kHz and the power adjustable in the range of 0-1000W. It has a built-in temperature sensor and automatically shuts down when overheating to achieve overheat protection.

[0040] The transducer 62 is mounted on the ultrasonic generator 61 and is electrically connected to the ultrasonic generator 61 via a cable to reduce electromagnetic interference.

[0041] The amplitude transformer 63 is mounted on the transducer 62 and extends through into the debubbling tank 1. The amplitude transformer 63 is a stepped rod made of titanium alloy. Its diameter gradually changes from 20mm at the end of the transducer 62 to 10mm extending into the debubbling tank 1. Its length is 15-20cm, and its end is processed into a conical shape to enhance the energy concentration effect.

[0042] When the ultrasonic generator 61 operates, the transducer 62 vibrates. The vibration of the transducer 62 is amplified by the amplitude transformer 63 and transmitted to the electrolyte in the defoaming tank 1, forming a local high-pressure and low-pressure alternating environment. Under the action of vibration, the micro bubbles expand, break up and merge in a cavitation effect, thereby effectively eliminating the micro bubbles in the electrolyte.

[0043] Specifically, the liquid discharge mechanism 4 includes a second pump 42, a liquid discharge pipe 43, and a liquid return pipe 44. A second mounting base 41 is fixed on the side of the defoaming tank 1. The second pump 42 is fixed on the second mounting base 41. One end of the liquid discharge pipe 43 is connected to the bottom of the defoaming tank 1, and the other end is connected to the input port of the second pump 42. One end of the liquid return pipe 44 is connected to the output port of the second pump 42, and the other end is connected to the electrolyte pool.

[0044] The second pump 42 operates, sequentially pumping the defoamed electrolyte from the bottom of the defoaming tank 1 back to the electrolyte pool via the outlet pipe 43 and the return pipe 44, completing one cycle. The system operates continuously, with the electrolyte constantly undergoing filtration, centrifugal defoaming, ultrasonic vibration cavitation, and reflux processes to achieve continuous and efficient defoaming.

[0045] The second pump 42 is the same model as the first pump 32. It is controlled by a flow sensor to ensure that the liquid level in the defoaming tank 1 is stable at 2 / 3 to 3 / 4 of the tank height.

[0046] The specific structure, model and coefficient indicators of all components in this utility model are its own technologies. As long as they can achieve the beneficial effects, they can be implemented. Therefore, they will not be described in detail.

[0047] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A micro-arc oxidation bubble elimination device, comprising a debubbling tank (1), characterized in that: The defoaming tank (1) has an opening at the top; The defoaming tank (1) has an inlet mechanism (3) on one side above and an outlet mechanism (4) on the other side below. The bottom of the defoaming tank (1) is provided with a centrifugal mechanism (5), and the side of the defoaming tank (1) is provided with an ultrasonic vibration module (6). The liquid inlet mechanism (3) is used to transport the electrolyte in the electrolyte pool to the defoaming tank (1). The centrifugation mechanism (5) is used to centrifuge and stir the electrolyte in the defoaming tank (1) to form a vortex. The ultrasonic vibration module (6) is used to generate vibration to cause microbubbles to cavitate. The liquid outlet mechanism (4) is used to return the defoamed electrolyte to the electrolyte pool, thereby realizing the circulating defoaming treatment of the electrolyte.

2. The micro-arc oxidation bubble elimination device according to claim 1, characterized in that: The liquid inlet mechanism (3) includes a first pump (32), a liquid inlet pipe (33), and a dispensing pipe (34); The defoaming tank (1) is fixed with a first mounting base (31) on its side. The first pump (32) is mounted on the first mounting base (31). One end of the liquid inlet pipe (33) is connected to the electrolyte tank, and the other end is connected to the input port of the first pump (32). One end of the delivery pipe (34) is connected to the output port of the first pump (32), and the other end extends to the top of the defoaming tank (1).

3. The micro-arc oxidation bubble elimination device according to claim 1, characterized in that: The centrifugal mechanism (5) includes a shaft (51), a round seat (52), centrifugal blades (53), and a drive device (54); The shaft (51) is rotatably mounted inside the bottom of the defoaming tank (1) and extends vertically downward to the bottom of the defoaming tank (1); The circular seat (52) is fixed on the top of the shaft (51), and a plurality of centrifugal blades (53) are evenly distributed on the outer peripheral wall of the circular seat (52). The drive device (54) is located at the bottom of the defoaming tank (1) and is used to drive the shaft (51) to rotate.

4. The micro-arc oxidation bubble elimination device according to claim 3, characterized in that: The drive unit (54) includes a U-shaped frame (541), a drive motor (542), and a coupling (543). The U-shaped frame (541) is fixed to the bottom of the defoaming tank (1), and the drive motor (542) is fixed to the U-shaped frame (541); The output shaft of the drive motor (542) is connected to the bottom end of the shaft (51) via the coupling (543); The bottom of the defoaming tank (1) is symmetrically fixed with two legs (11), which are in an inverted U shape.

5. The micro-arc oxidation bubble elimination device according to claim 1, characterized in that: The ultrasonic oscillation module (6) includes an ultrasonic generator (61), a transducer (62), and an amplitude transformer (63). The ultrasonic generator (61) is installed on the outer side of the defoaming tank (1), and the transducer (62) is installed on the ultrasonic generator (61) and electrically connected to the ultrasonic generator (61). The amplitude rod (63) is mounted on the transducer (62) and extends through into the defoaming tank (1).

6. The micro-arc oxidation bubble elimination device according to claim 1, characterized in that: The liquid discharge mechanism (4) includes a second pump (42), a liquid discharge pipe (43), and a liquid return pipe (44). The defoaming tank (1) is fixed with a second mounting base (41) on its side, and the second pump (42) is fixed on the second mounting base (41); One end of the outlet pipe (43) is connected to the bottom of the defoaming tank (1), and the other end is connected to the inlet of the second pump (42); One end of the return pipe (44) is connected to the output port of the second pump (42), and the other end is connected to the electrolyte pool.

7. The micro-arc oxidation bubble elimination device according to claim 2, characterized in that: The defoaming tank (1) is provided with a filter basket (2) at the top opening. The filter basket (2) is used to filter the electrolyte that is fed into the defoaming tank (1) by the delivery pipe (34).

8. The micro-arc oxidation bubble elimination device according to claim 7, characterized in that: The filter basket (2) is perfectly matched with the top opening of the defoaming tank (1); The filter basket (2) is slidably fitted into the top opening of the defoaming tank (1); Support plates (21) are evenly distributed on the periphery of the filter basket (2) near its top, and the support plates (21) are in contact with and block the top of the defoaming tank (1).

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