Ultrasonic cleaning device for fuel nozzle of aero-engine

Abstract

The utility model belongs to the technical field of aero-engine maintenance, and particularly relates to an aero-engine fuel nozzle ultrasonic cleaning device which comprises a cleaning device body, and an auxiliary cleaning mechanism is arranged in the cleaning device body. The auxiliary cleaning mechanism comprises rollers, and the rollers are connected to the inner wall of the cleaning device body through rotating shafts; the rotating gears are connected to the two ends of the surface of the roller in a sleeving mode correspondingly; the servo motor is fixedly installed on the rear side of the cleaning device body, and an output shaft of the servo motor penetrates into the cleaning device body and is fixedly connected with the roller on one side; and the conveying toothed belt is connected to the surface of the rotating gear in a meshed mode and rotationally connected to the inner wall of the cleaning device body. According to the ultrasonic cleaning device for the fuel nozzle of the aero-engine, the fuel nozzle of the engine can be rotationally cleaned, ultrasonic waves and cleaning liquid can make contact with each part of the fuel nozzle more comprehensively, and thorough cleaning is guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of aircraft engine maintenance technology, specifically relating to an ultrasonic cleaning device for aircraft engine fuel nozzles. Background Technology

[0002] Fuel injectors in aircraft engines are among the parts most prone to carbon buildup during combustion. Excessive carbon buildup can easily reduce engine thermal efficiency and even clog the injectors. Therefore, inspecting and cleaning fuel injectors is an essential step in aircraft engine maintenance. However, carbon deposits are difficult to dissolve in common solvents like water, making them insoluble. Furthermore, the fuel injector's structure is relatively complex, and overly forceful cleaning methods such as acid washing are not suitable to avoid damaging its components. Therefore, choosing an appropriate cleaning method is crucial.

[0003] Ultrasonic cleaning technology converts sound energy into mechanical energy, relying on the vibration of tiny air bubbles in water under sound pressure to generate minute shock waves that break down insoluble contaminants adhering to the surface of the parts being cleaned. Ultrasonic cleaning technology is now commonly used in the cleaning of many precision instruments. In summary, ultrasonic cleaning offers significant advantages for cleaning fuel injectors.

[0004] However, although existing ultrasonic cleaning devices can generate high-frequency vibrations, if the position of the fuel nozzle is fixed, some areas may not be able to fully contact the cleaning fluid or the microbubbles generated by the ultrasonic waves, thus affecting the cleaning effect. Utility Model Content

[0005] The purpose of this invention is to provide an ultrasonic cleaning device for aircraft engine fuel nozzles, which can perform rotational cleaning of engine fuel nozzles. Ultrasonic waves and cleaning fluid can more comprehensively contact every part of the fuel nozzle, ensuring thorough cleaning.

[0006] The specific technical solution adopted by this utility model is as follows:

[0007] An ultrasonic cleaning device for aircraft engine fuel nozzles includes a main body of the cleaning device, and an auxiliary cleaning mechanism is provided inside the main body of the cleaning device. The auxiliary cleaning mechanism includes: rollers, which are respectively connected to the inner wall of the main body of the cleaning device via rotating shafts; rotating gears, which are respectively sleeved on both ends of the roller surface; a servo motor, which is fixedly installed on the rear side of the main body of the cleaning device, and the output shaft of the servo motor passes through the interior of the main body of the cleaning device and is fixedly connected to one side of the roller; and a transmission toothed belt, which is respectively meshed with the surface of the rotating gear and rotatably connected to the inner wall of the main body of the cleaning device.

[0008] Preferably, the main body of the cleaning device is provided with an auxiliary limiting mechanism. The auxiliary limiting mechanism includes a vertical plate, a compression spring, a limiting member, and a round rod. The vertical plate is fixedly connected to the inner wall of the main body of the cleaning device. One end of the compression spring is fixedly connected to the bottom of the vertical plate. The limiting member is fixedly connected to the other end of the compression spring. The limiting member is located at the top between two adjacent rollers. One end of the round rod is fixedly connected to the top of the limiting member. The other end of the round rod extends through to the top of the vertical plate. The round rod is movably disposed inside the compression spring.

[0009] Preferably, a handle is fixedly connected to the top end of the round rod, and the handle is elongated.

[0010] Preferably, the top of the limiting member is provided with a groove, and a pressure roller is installed on the inner wall of the groove.

[0011] Preferably, a protective layer is fixedly connected to the surface of the roller, and the protective layer is made of rubber.

[0012] Preferably, a support member is fixedly connected to the inner wall of the main body of the cleaning device, and the support member is located at the bottom between two adjacent rollers.

[0013] The technical effects achieved by this utility model are as follows:

[0014] In this invention, when cleaning the fuel injector, the fuel injector can first be placed between two adjacent rollers. Then, under the downward pressure of the compression spring on the limiting member, the fuel injector can be limited between the two adjacent rollers. Then, cleaning fluid is added into the main body of the cleaning device to clean the fuel injector. At the same time, the servo motor is running. The operation of the servo motor will drive the roller and the rotating gear on one side to rotate. The rotation of the roller and the rotating gear on one side will drive the transmission belt to rotate. The rotation of the transmission belt will simultaneously drive the rotating gear and the roller to rotate. When the rollers rotate at the same time, the middle fuel injector will roll between the two adjacent rollers. When the fuel injector is rolling, it can ensure that the cleaning fluid and ultrasonic waves act evenly on the surface of the fuel injector, more effectively removing carbon deposits, dirt and other impurities, and avoiding residues left in some parts due to insufficient contact.

[0015] In this invention, when the rollers rotate and drive the fuel injectors to rotate, the fuel injectors can be limited between two adjacent rollers under the downward pressure of the compression spring and the limiting component. This prevents displacement when the rollers rotate simultaneously and drive the fuel injectors to roll. Thus, with the cooperation of the auxiliary limiting mechanism, the fuel injectors can be limited without affecting the rolling and cleaning of the fuel injectors. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a three-dimensional schematic diagram of the internal structure of the main body of the cleaning device of this utility model;

[0018] Figure 3 This is a three-dimensional schematic diagram of the disassembled auxiliary limiting mechanism of this utility model;

[0019] Figure 4 This is a three-dimensional view of the auxiliary cleaning mechanism of this utility model from below.

[0020] The attached diagram lists the components represented by each number as follows:

[0021] 1. Main body of the cleaning device; 201. Roller; 202. Rotating gear; 203. Servo motor; 204. Transmission toothed belt; 301. Vertical plate; 302. Compression spring; 303. Limiting component; 304. Round rod; 4. Handle; 501. Groove; 502. Pressure roller; 6. Protective layer; 7. Support component. Detailed Implementation

[0022] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0023] like Figures 1-4 As shown, an ultrasonic cleaning device for aircraft engine fuel nozzles includes a main body 1, with an auxiliary cleaning mechanism inside the main body 1. The auxiliary cleaning mechanism includes: rollers 201 connected to the inner wall of the main body 1 via rotating shafts; rotating gears 202 sleeved on both ends of the rollers 201; a servo motor 203 fixedly mounted on the rear side of the main body 1, with its output shaft penetrating the interior of the main body 1 and fixedly connected to one side of the rollers 201; and a transmission belt 204 for transmitting... The toothed belt 204 is respectively engaged with the surface of the rotating gear 202 and rotatably connected to the inner wall of the main body 1 of the cleaning device. With the cooperation of the auxiliary cleaning mechanism, during the cleaning of the fuel injector, the rotation of the roller 201 helps the fuel injector to keep rotating during the cleaning process, ensuring that the ultrasonic cleaning fluid can act evenly on all parts of the fuel injector, including the internal small channels and the external surface. Moreover, the rotation of the roller 201 allows the cleaning fluid to circulate in multiple angles and different areas of the fuel injector, thereby improving the cleaning depth, especially cleaning hard-to-reach small parts and removing stubborn carbon deposits or dirt.

[0024] like Figures 2-3As shown, the main body 1 of the cleaning device is equipped with an auxiliary limiting mechanism. The auxiliary limiting mechanism includes a vertical plate 301, a compression spring 302, a limiting member 303, and a round rod 304. The vertical plate 301 is fixedly connected to the inner wall of the main body 1 of the cleaning device. One end of the compression spring 302 is fixedly connected to the bottom of the vertical plate 301. The limiting member 303 is fixedly connected to the other end of the compression spring 302. The limiting member 303 is located at the top between two adjacent rollers 201. One end of the round rod 304 is fixedly connected to the top of the limiting member 303. The other end of the round rod 304 extends through to the top of the vertical plate 301. The round rod 304 is movably disposed inside the compression spring 302. The design of the limiting mechanism ensures that the oil nozzle will not move excessively or be misaligned during the rotation and cleaning process inside the roller 201, thus preventing the oil nozzle from deviating from the track of the roller 201 and ensuring the stability and efficiency of the cleaning process.

[0025] like Figures 2-3 As shown, a handle 4 is fixedly connected to the top of the round rod 304. The handle 4 is long and narrow. When the oil nozzle is positioned between the two rollers 201, the round rod 304 can be pulled upward by the handle 4. The upward movement of the round rod 304 will cause the limiting member 303 to move upward. The upward movement of the limiting member 303 will compress the compression spring 302. After lifting the limiting member 303, it is convenient for the staff to place the oil nozzle between the two adjacent rollers 201. Then, the hand can be released from the handle 4, and the rebound force of the compression spring 302 will push the limiting member 303 to limit the oil nozzle between the rollers 201, thus preventing the oil nozzle from shifting during the rotation cleaning process.

[0026] like Figure 3 As shown, the top of the limiting member 303 is provided with a slot 501, and a pressure roller 502 is installed on the inner wall of the slot 501. The pressure roller 502 can effectively reduce the direct friction between the oil nozzle and the limiting member 303, reduce the friction force, and enable the roller 201 to drive the oil nozzle to roll smoothly. This not only extends the service life of the structure, but also helps to improve the cleaning efficiency.

[0027] like Figure 2 and Figure 4 As shown, a protective layer 6 is fixedly connected to the surface of the roller 201. The protective layer 6 is made of rubber. The rubber protective layer 6 can effectively reduce the direct friction between the surface of the roller 201 and the fuel injector, reduce wear, and effectively protect the fuel injector from damage when it rolls.

[0028] like Figure 4As shown, a support member 7 is fixedly connected to the inner wall of the main body 1 of the cleaning device. The support member 7 is located at the bottom between two adjacent rollers 201. The support member 7 can provide auxiliary support for the oil nozzle between the two rollers 201, preventing the oil nozzle from slipping between the rollers 201 when the rollers 201 drive the oil nozzle to roll and clean. The support member 7 can also provide additional support force, so that the oil nozzle is always in the correct position during the cleaning process, which can prevent the oil nozzle from deviating from the target surface, ensure the oil spray position is accurate during the cleaning process, and improve the cleaning efficiency and effect.

[0029] The working principle of this utility model is as follows: When cleaning the fuel injector, the fuel injector can be placed between two adjacent rollers 201. Then, under the downward pressure of the compression spring 302 on the limiting member 303, the fuel injector can be limited between the two adjacent rollers 201. Then, cleaning fluid is added into the interior of the main body 1 of the cleaning device to clean the fuel injector. At the same time, the servo motor 203 is running. The operation of the servo motor 203 will drive the roller 201 and the rotating gear 202 on one side to rotate. The rotation of the roller 201 and the rotating gear 202 on one side can drive the transmission toothed belt 204 to rotate. The rotation of the transmission toothed belt 204 can simultaneously drive the rotating gear 202 and the roller 201 to rotate. When the rollers 201 rotate simultaneously, the middle fuel injector can be driven to roll between the two adjacent rollers 201. When the fuel injector is rolling, it can ensure that the cleaning fluid and ultrasonic waves act evenly on the surface of the fuel injector, more effectively removing carbon deposits, dirt and other impurities, and avoiding residues left in some parts due to insufficient contact.

[0030] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. An ultrasonic cleaning device for aircraft engine fuel nozzles, comprising a main body (1) of the cleaning device, characterized in that: An auxiliary cleaning mechanism is provided inside the main body (1) of the cleaning device; The auxiliary cleaning mechanism includes: rollers (201), which are connected to the inner wall of the main body (1) of the cleaning device via rotating shafts; Rotating gears (202) are respectively sleeved on both ends of the surface of roller (201); Servo motor (203), the servo motor (203) is fixedly installed on the rear side of the main body (1) of the cleaning device, and the output shaft of the servo motor (203) passes through the interior of the main body (1) of the cleaning device and is fixedly connected to the roller (201) on one side; The toothed belt (204) is meshed with the surface of the rotating gear (202) and rotatably connected to the inner wall of the main body (1) of the cleaning device.

2. The ultrasonic cleaning device for aircraft engine fuel nozzles according to claim 1, characterized in that: An auxiliary limiting mechanism is provided inside the main body (1) of the cleaning device. The auxiliary limiting mechanism includes a vertical plate (301), a compression spring (302), a limiting member (303), and a round rod (304). The vertical plate (301) is fixedly connected to the inner wall of the main body (1) of the cleaning device. One end of the compression spring (302) is fixedly connected to the bottom of the vertical plate (301). The limiting member (303) is fixedly connected to the other end of the compression spring (302). The limiting member (303) is located at the top between two adjacent rollers (201). One end of the round rod (304) is fixedly connected to the top of the limiting member (303). The other end of the round rod (304) extends through to the top of the vertical plate (301). The round rod (304) is movably disposed inside the compression spring (302).

3. The ultrasonic cleaning device for aircraft engine fuel nozzles according to claim 2, characterized in that: A handle (4) is fixedly connected to the top of the round rod (304), and the handle (4) is long and narrow.

4. The ultrasonic cleaning device for aircraft engine fuel nozzles according to claim 2, characterized in that: The top of the limiting member (303) is provided with a slot (501), and a pressure roller (502) is installed on the inner wall of the slot (501).

5. The ultrasonic cleaning device for aircraft engine fuel nozzles according to claim 1, characterized in that: A protective layer (6) is fixedly connected to the surface of the roller (201), and the protective layer (6) is made of rubber.

6. The ultrasonic cleaning device for aircraft engine fuel nozzles according to claim 1, characterized in that: The inner wall of the main body (1) of the cleaning device is fixedly connected with a support member (7), which is located at the bottom between two adjacent rollers (201).

Images