An ultrasonic cleaning machine for industrial parts cleaning

Abstract

This invention relates to the field of cleaning equipment technology, specifically disclosing an ultrasonic cleaner for cleaning industrial parts, comprising: a cleaning machine housing; a cleaning cylinder, fastened within the cleaning machine housing, wherein the cleaning cylinder has flow guides on its two side walls along the width direction and two spaced-apart sliding grooves on each of its two side walls along the length direction, and multiple ultrasonic transducers are disposed at the bottom of the cleaning cylinder; a filter media assembly, including a filter box and filter components disposed within the filter box, wherein a water pumping structure and two flow guide components are disposed between the filter media assembly and the cleaning cylinder; and a separation box assembly disposed between the cleaning cylinder and the filter media assembly. This invention achieves circulating filtration and purification of the cleaning fluid, realizes continuous separation and discharge of surface oil layers during the cleaning process, avoids secondary pollution caused by continuous accumulation of oil on the surface of the cleaning fluid, reduces the frequency of cleaning fluid replacement, and lowers operating costs.

Description

Technical Field

[0001] This invention relates to the field of cleaning equipment technology, and more specifically to an ultrasonic cleaner for cleaning industrial parts. Background Technology

[0002] In fields such as machining, automobile manufacturing, and electronic component production, industrial parts often accumulate contaminants such as oil, cutting fluid, metal shavings, and dust on their surfaces during processing, assembly, or repair. These contaminants need to be removed through cleaning processes to ensure the quality of subsequent processing or assembly. Ultrasonic cleaning technology is one of the most widely used methods for cleaning parts. Its principle is to use an ultrasonic transducer to convert electrical energy into high-frequency mechanical vibrations, which are then transmitted to the surface of the part through a cleaning fluid. The cavitation effect generates tiny bubbles that burst and impact, stripping away oil and impurities.

[0003] Chinese Patent (CN107661883A) discloses an ultrasonic cleaning device for drying workpieces, including a cleaning tank, a basket, and a drying box. The cleaning tank is integrally formed from an upper box and a lower box. The top of the upper box is open, and the basket can be inserted into the upper box. The upper box can be filled with cleaning fluid. The top and front of the lower box are open. Multiple transducers are arranged on the side walls and bottom of the upper box. Multiple first electric heating coils are detachably installed on the inner wall of the upper box, offset from the transducers. A fourth through hole is opened on the bottom of the upper box, offset from the transducers. A stirring shaft is rotatably installed in the fourth through hole. Multiple stirring rods are evenly arranged on the rod wall of the stirring shaft inside the upper box.

[0004] However, the aforementioned technologies have some drawbacks, such as: 1. Lack of an effective filtration and circulation system, resulting in serious waste of cleaning fluid: The existing cleaning machine does not have an internal filtration and circulation system. After a period of use, the cleaning fluid becomes ineffective due to the accumulation of oil and impurities. It can only be drained from the tank periodically and replaced with new fluid, resulting in a large waste of cleaning fluid, increasing the cost of use and the burden of waste fluid disposal.

[0005] 2. The oil layer on the liquid surface cannot be automatically drained, affecting the cleaning effect: During the cleaning process, the oil stains that are detached float on the surface of the cleaning liquid and form an oil layer. If it is not removed in time, the oil layer will re-adhere to the cleaned part surface, reducing the cleaning effect. The traditional method relies on manual periodic skimming or replacement of the cleaning liquid, which is cumbersome and inefficient. Summary of the Invention

[0006] To address the aforementioned problems in the prior art, this invention provides an ultrasonic cleaning machine for cleaning industrial parts, which can solve the problems mentioned in the background art.

[0007] The objective of this invention can be achieved through the following technical solutions: An ultrasonic cleaner for cleaning industrial parts includes: The cleaning machine housing has a back panel that can be detachably installed on one side via fasteners. The cleaning cylinder is installed inside the cleaning machine housing by fasteners. The cleaning cylinder has flow guide ports on both side walls along the width direction and two spaced sliding grooves on each side wall along the length direction. Multiple ultrasonic transducers are installed at the bottom of the cleaning cylinder, and an electric heating coil is installed on the inner wall of the cleaning cylinder. The filter media box assembly includes a filter box and filter components installed inside the filter box. A water pumping structure and two flow guiding components are provided between the filter media box assembly and the cleaning tank. The separation tank assembly is located between the cleaning tank and the filter media assembly and is used to separate the cleaning fluid and the oil layer. The support assembly, located inside the cleaning tank, is used to support industrial parts; The oil scraping assembly is installed inside the cleaning tank; The drive mechanism is used to drive the oil scraping assembly to slide and scrape the oil layer into the guide port.

[0008] Preferably, a fan hood is provided on one side of the cleaning machine housing, and multiple support feet are provided at the bottom of the cleaning machine housing.

[0009] Preferably, the top of the cleaning tank is open, and the cross-section has an irregular profile formed by the intersection of a rectangle and an isosceles trapezoid.

[0010] Preferably, the filtration assembly includes a filter screen and an impurity filter element. The filter screen is disposed inside the filtration box, and the impurity filter element is disposed at the top of the filter screen. A gap is left between the filter screen and the bottom wall of the filtration box, and a gap is left between the impurity filter element and the top wall of the filtration box.

[0011] Preferably, the water pumping structure includes a return pipe that runs through the cleaning tank and the filter box, and a water pump is provided on the side wall of the return pipe.

[0012] Preferably, the flow guiding assembly includes a telescopic pipe and a water inlet pipe. The telescopic pipe is disposed through the bottom of the cleaning tank, and the water inlet pipe is disposed through the top of the filter box. The telescopic pipe and the water inlet pipe are fixedly connected by a flange, and a solenoid valve is provided on the side wall of the water inlet pipe.

[0013] Preferably, the separation box assembly includes a flow guide box, a flow guide pipe disposed at the bottom of the flow guide box, and a coalescing filter element disposed inside the flow guide box. The two flow guide boxes are respectively disposed on the outer walls of opposite sides of the cleaning tank. The flow guide box is matched with the flow guide port. The top and bottom ends of the flow guide pipe are respectively connected to the flow guide box and the cleaning tank, and the bottom end of the flow guide pipe is higher than the top end of the filter screen.

[0014] Preferably, the bearing assembly includes two folding plates, which are respectively disposed on the inner walls of opposite sides of the cleaning tank. The top of the folding plate is provided with a plurality of protruding posts, and a bearing net is disposed between the two folding plates. The bearing net matches the protruding posts.

[0015] Preferably, the oil scraping assembly includes two sliding plates, which are slidably disposed in the cleaning tank through two adjacent sliding grooves. Two limiting posts are provided through the bottom end of the sliding plates, and a float plate is slidably sleeved between the two adjacent limiting posts. The density of the float plate is less than the density of the cleaning fluid.

[0016] Preferably, the drive mechanism includes two rotating shafts, which are mounted on the outer walls of the cleaning cylinder on opposite sides via supports. Two pulleys are provided on the shaft bodies of the rotating shafts, and a synchronous belt is provided between the two pulleys located on the same side of the cleaning cylinder. Parallel clamps are provided between the two ends of the sliding plate and the adjacent synchronous belts, respectively. A servo motor is provided on the outer wall of the cleaning cylinder, and the output shaft of the servo motor is fixedly connected to the adjacent rotating shaft via a coupling.

[0017] The beneficial effects of this invention are as follows: 1. By setting up a separation box assembly consisting of a flow guide box, a flow guide pipe and a coalescing filter element, the flow guide box is matched with the flow guide port on the side wall of the cleaning tank. The oil layer enters the flow guide box through the flow guide port and passes through the coalescing filter element. After oil and water separation, the oil layer floats to the top of the flow guide box and is discharged. The separated cleaning liquid flows back to the bottom of the cleaning tank through the flow guide pipe. The technical benefits achieved are: continuous separation and discharge of surface oil during the cleaning process, avoiding secondary pollution caused by the continuous accumulation of oil on the surface of the cleaning fluid, reducing the frequency of cleaning fluid replacement, and lowering operating costs.

[0018] 2. By setting up an oil scraping assembly consisting of a sliding plate, a limiting post, and a float, the float, whose density is less than that of the cleaning fluid, always floats on the liquid surface. In conjunction with a drive mechanism consisting of a rotating shaft, pulleys, a synchronous belt, and a servo motor, the servo motor drives the synchronous belt to move the sliding plate back and forth along the slide groove. The float moves with the sliding plate to scrape the oil layer on the liquid surface into the guide port. The float and the limiting post are slidably connected and can float adaptively with the liquid level. The technical effects achieved are: automatic, continuous, and efficient removal of oil layer on the liquid surface; the adaptive floating of the float ensures that it always stays in contact with the liquid surface, adapts to slight fluctuations in liquid level, and the oil removal effect is stable and reliable, avoiding manual intervention.

[0019] 3. By setting up a filter assembly consisting of a filter box, filter screen and impurity filter element, gaps are left between the filter screen and the bottom wall of the filter box, and between the impurity filter element and the top wall of the filter box. The cleaning liquid in the cleaning tank flows into the filter box through the telescopic pipe and the water inlet pipe. After passing through the filter screen for coarse filtration and the impurity filter element for fine filtration, it is pumped back to the cleaning tank by the water pump through the return pipe. The technical effects achieved are: the cleaning fluid is purified through circulation filtration, effectively removing suspended particulate matter and tiny impurities, ensuring that the cleaning fluid remains clean for a long time, extending the service life of the cleaning fluid, and guaranteeing the consistency of ultrasonic cleaning and the cleanliness of parts. Attached Figure Description

[0020] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a structural diagram of the cleaning housing and back plate in this invention. Figure 3 This is a sectional perspective view of the cleaning housing and filter media assembly in this invention; Figure 4 This is a sectional perspective view of the cleaning tank and the supporting assembly in this invention; Figure 5 This is a structural diagram of the oil scraping assembly and drive mechanism in this invention. Figure 6 This is an installation structure diagram of the cleaning cylinder, filter box, flow guide box, and flow guide pipe in this invention; Figure 7 This is a cross-sectional view of the cleaning tank in this invention.

[0022] Explanation of reference numerals in the attached figures: 1. Clean the casing; 2. Back panel; 3. Fan shroud; 4. Support feet; 11. Cleaning tank; 12. Flow guide; 13. Slide chute; 14. Ultrasonic transducer; 21. Filter box; 22. Filter screen; 23. Impurity filter element; 24. Return pipe; 25. Water pump; 26. Telescopic pipe; 27. Inlet pipe; 28. Solenoid valve; 31. Flow guide box; 32. Flow guide pipe; 33. Coalescing filter element; 41. Folded plate; 42. Protruding column; 43. Supporting mesh; 51. Sliding plate; 52. Limiting post; 53. Floating plate; 61. Shaft; 62. Pulley; 63. Synchronous belt; 64. Parallel clamp; 65. Servo motor. Detailed Implementation

[0023] To further illustrate the technical means and effects adopted by the present invention to achieve its intended purpose, the specific implementation methods, structures, features, and effects of the present invention will be clearly and completely described below in conjunction with the accompanying drawings and preferred embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] In the description of this application, it should be understood that the orientation or positional relationship indicated by terms such as "inner" and "outer" are based on the orientation or position shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or a specific orientational structure and operation, and therefore should not be construed as a limitation of this application.

[0025] Example 1: Reference Figures 1-7 The present invention discloses an ultrasonic cleaner for cleaning industrial parts, comprising: In order to achieve overall support and external protection for the cleaning machine housing, in this embodiment: the cleaning machine housing 1 has a back plate 2 that can be detachably installed on one side by fasteners, a fan hood 3 is installed on one side of the cleaning machine housing 1, and multiple support feet 4 are installed at the bottom of the cleaning machine housing 1.

[0026] In order to achieve the functions of accommodating industrial parts, circulating cleaning fluid, and cleaning with ultrasonic vibration, in this embodiment: the cleaning cylinder 11 is set in the cleaning machine housing 1 by fasteners. The top of the cleaning cylinder 11 is open and the cross-section is an irregular contour formed by the connection of a rectangle and an isosceles trapezoid. The cleaning cylinder 11 has flow guide ports 12 on both sides along the width direction and two spaced sliding grooves 13 on each side along the length direction. The bottom of the cleaning cylinder 11 is provided with multiple ultrasonic transducers 14.

[0027] Multiple ultrasonic transducers 14 are arranged in an array on the outer or inner wall of the bottom of the cleaning tank 11. Each ultrasonic transducer 14 is electrically connected to an external ultrasonic generator. The ultrasonic transducer 14 is a piezoelectric ceramic transducer, comprising a piezoelectric ceramic crystal stack, electrode plates, front and rear metal covers, and prestressed bolts. The piezoelectric ceramic crystal stack is composed of multiple stacked piezoelectric ceramic plates, with electrode plates positioned between adjacent plates. The piezoelectric ceramic crystal stack is sandwiched between the front and rear metal covers and secured with prestressed bolts to apply preload and prevent the ceramic plates from breaking during vibration. When the ultrasonic generator applies a high-frequency alternating current signal to the ultrasonic transducer 14, the piezoelectric ceramic crystal stack generates an inverse piezoelectric effect, converting electrical energy into high-frequency mechanical vibration. This vibration is transmitted through the front metal cover to the bottom wall of the cleaning tank 11, and then through the cleaning fluid to the surface of the parts, utilizing cavitation to remove oil and impurities.

[0028] To achieve filtration, purification, and circulation of the cleaning fluid, in this embodiment: a filter media assembly includes a filter box 21 and a filter component disposed within the filter box 21. The filter component includes a filter screen 22 and an impurity filter element 23. The filter screen 22 is disposed within the filter box 21, and the impurity filter element 23 is disposed at the top of the filter screen 22. A gap is left between the filter screen 22 and the bottom wall of the filter box 21, and a gap is left between the impurity filter element 23 and the top wall of the filter box 21. A water pumping structure and two flow guiding components are provided between the filter media assembly and the cleaning tank 11. The water pumping structure includes a return pipe 24, which is disposed through the cleaning tank 11 and the filter box 21. A water pump 25 is disposed on the side wall of the return pipe 24. The flow guiding components include a telescopic pipe 26 and an inlet pipe 27. The telescopic pipe 26 is disposed through the bottom end of the cleaning tank 11, and the inlet pipe 27 is disposed through the top end of the filter box 21. The telescopic pipe 26 and the inlet pipe 27 are fixedly connected by a flange, and a solenoid valve 28 is disposed on the side wall of the inlet pipe 27.

[0029] A liquid level sensor is also installed inside the cleaning tank 11. The sensor is mounted on the inner wall of the cleaning tank 11 at a preset height below the guide port 12. It is used to detect the real-time liquid level of the cleaning fluid in the cleaning tank 11. The liquid level sensor can be a float-type liquid level switch or a capacitive liquid level sensor, and its signal output terminal is electrically connected to the signal input terminal of the controller. When the liquid level sensor detects that the cleaning fluid level is lower than the preset lower limit, it sends a low liquid level signal to the controller. The controller then controls the solenoid valve 28 to open, replenishing the cleaning fluid. When the liquid level sensor detects that the cleaning fluid level is higher than the preset upper limit, it sends a high liquid level signal to the controller. The controller then controls the solenoid valve 28 to close, stopping the replenishment and ensuring that the cleaning fluid is always maintained within a suitable working liquid level range.

[0030] To achieve the separation and export of the oil layer in the cleaning fluid, in this embodiment: a separation box assembly is set between the cleaning cylinder 11 and the filter media assembly to separate the cleaning fluid and the oil layer. The separation box assembly includes a flow guide box 31, a flow guide pipe 32 set at the bottom of the flow guide box 31, and a coalescing filter element 33 set inside the flow guide box 31. The two flow guide boxes 31 are respectively set on the outer walls of the cleaning cylinder 11 on opposite sides. The flow guide box 31 is matched with the flow guide port 12. The top and bottom ends of the flow guide pipe 32 are connected to the flow guide box 31 and the cleaning cylinder 11 respectively, and the bottom end of the flow guide pipe 32 is higher than the top end of the filter screen 22.

[0031] In order to realize the support and placement of industrial parts, in this embodiment: the support assembly is located inside the cleaning tank 11 and is used to support the industrial parts. The support assembly includes two folding plates 41, which are respectively set on the inner walls of opposite sides of the cleaning tank 11. Multiple protrusions 42 are provided at the top of the folding plates 41, and a support net 43 is provided between the two folding plates 41. The support net 43 matches the protrusions 42.

[0032] In order to achieve the removal and collection of the oil layer on the surface of the cleaning fluid, in this embodiment: an oil scraping assembly is set in the cleaning tank 11. The oil scraping assembly includes two sliding plates 51, which are slidably set in the cleaning tank 11 through two adjacent sliding grooves 13. Two limiting posts 52 are provided through the bottom end of the sliding plates 51. A float plate 53 is slidably sleeved between the two adjacent limiting posts 52. The density of the float plate 53 is less than the density of the cleaning fluid.

[0033] To achieve the reciprocating motion drive of the oil scraping assembly, in this embodiment: a drive mechanism is used to drive the oil scraping assembly to slide and scrape the oil layer to the guide port 12. The drive mechanism includes two rotating shafts 61, which are mounted on the outer walls of the cleaning cylinder 11 on opposite sides by supports. Two pulleys 62 are provided on the shaft of the rotating shaft 61. A synchronous belt 63 is provided between the two pulleys 62 on the same side of the cleaning cylinder 11. Parallel clamps 64 are provided between the two ends of the sliding plate 51 and the adjacent synchronous belt 63 respectively. A servo motor 65 is provided on the outer wall of the cleaning cylinder 11. The output shaft of the servo motor 65 is fixedly connected to the adjacent rotating shaft 61 through a coupling.

[0034] The working principle and usage process of this invention are as follows: Before cleaning begins, the controller first injects a preset amount of cleaning fluid into the cleaning tank 11. The liquid level sensor detects the liquid level in real time. When the liquid level reaches the preset working level, the industrial parts to be cleaned are then placed on the support net 43. The support net 43 is positioned on the baffle plate 41 by the protrusion 42, so that the parts are immersed in the cleaning fluid and remain stable.

[0035] After the liquid level stabilizes, the controller starts the cleaning program. The ultrasonic transducer 14 at the bottom of the cleaning tank 11 is activated, converting electrical energy into high-frequency mechanical vibration, which is transmitted to the surface of the parts through the cleaning fluid, using cavitation effect to remove oil and impurities. As cleaning proceeds, the oil is peeled off from the surface of the parts and floats on the surface of the cleaning fluid, forming an oil layer. The oil scraping assembly reciprocates under the drive mechanism: the servo motor 65 drives the rotating shaft 61 to rotate, which drives the sliding plate 51 to slide back and forth along the slide groove 13 through the pulley 62 and the synchronous belt 63. The float plate 53 has a lower density than the cleaning fluid and always floats on the surface of the liquid. Driven by the sliding plate 51, it scrapes the oil layer on the surface of the liquid towards the guide port 12. The oil layer enters the guide box 31 through the guide port 12, passes through the coalescing filter element 33, and the oil and water separate. The oil layer floats to the top of the guide box 31 and is discharged through the oil drain port. The separated cleaning fluid flows back to the bottom of the cleaning tank 11 through the guide pipe 32.

[0036] During the cleaning process, the cleaning fluid in the cleaning tank 11 enters the filter box 21 through two paths: First, the cleaning fluid after the surface oil layer is scraped off enters the guide box 31 through the guide port 12, is separated by the coalescing filter element 33, and then flows back to the bottom of the cleaning tank 11 through the guide pipe 32, and then flows into the filter box 21 through the telescopic pipe 26 and the water inlet pipe 27; Second, the cleaning fluid at the bottom of the cleaning tank 11 flows directly into the filter box 21 through the telescopic pipe 26 and the water inlet pipe 27. The solenoid valve 28 controls the opening and closing of the water inlet pipe 27 to regulate the flow rate of the cleaning fluid into the filter box 21. The cleaning fluid entering the filter box 21 is first filtered by the filter screen 22 to remove large particulate impurities, and then finely filtered by the impurity filter element 23 to remove small particulate matter. The water pump 25 draws out the cleaning fluid filtered at the bottom of the filter box 21 through the return pipe 24 and pumps it back into the cleaning tank 11 through the return pipe 24 to complete a complete filtration cycle. The controller adjusts the opening and closing of the solenoid valve 28 in real time according to the feedback signal from the liquid level sensor to maintain a constant liquid level of the cleaning fluid.

[0037] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. An ultrasonic cleaner for cleaning industrial parts, characterized by, include: The cleaning machine housing (1) has a back plate (2) that can be detachably installed on one side via fasteners. The cleaning cylinder (11) is installed in the cleaning machine housing (1) by fasteners. The cleaning cylinder (11) has flow guide ports (12) on both sides along the width direction and two spaced sliding grooves (13) on each side along the length direction. Multiple ultrasonic transducers (14) are installed at the bottom of the cleaning cylinder (11). The filter media assembly includes a filter box (21) and a filter component installed in the filter box (21). A water pumping structure and two flow guiding components are provided between the filter media assembly and the cleaning tank (11). The separation tank assembly is located between the cleaning tank (11) and the filter media assembly to separate the cleaning fluid and the oil layer; The support assembly, located inside the cleaning tank (11), is used to support industrial parts; The oil scraping assembly is installed inside the cleaning tank (11); A drive mechanism is used to drive the oil scraping assembly to slide and scrape the oil layer to the guide port (12).

2. The ultrasonic cleaning machine for cleaning industrial parts according to claim 1, characterized in that, A fan hood (3) is provided on one side of the cleaning machine housing (1), and multiple support feet (4) are provided at the bottom of the cleaning machine housing (1).

3. An ultrasonic cleaner for cleaning industrial parts according to claim 1, characterized in that, The top of the cleaning tank (11) is open, and its cross-section is an irregular shape formed by the connection of a rectangle and an isosceles trapezoid.

4. An ultrasonic cleaner for cleaning industrial parts according to claim 1, characterized in that, The filter assembly includes a filter screen (22) and an impurity filter element (23). The filter screen (22) is disposed inside the filter box (21), and the impurity filter element (23) is disposed at the top of the filter screen (22). There is a gap between the filter screen (22) and the bottom wall of the filter box (21), and a gap between the impurity filter element (23) and the top wall of the filter box (21).

5. An ultrasonic cleaner for cleaning industrial parts according to claim 1, characterized in that, The water pumping structure includes a return pipe (24), which is installed between the cleaning tank (11) and the filter box (21), and a water pump (25) is installed on the side wall of the return pipe (24).

6. An ultrasonic cleaner for cleaning industrial parts according to claim 1, characterized in that, The flow guiding assembly includes a telescopic pipe (26) and a water inlet pipe (27). The telescopic pipe (26) is installed through the bottom of the cleaning tank (11), and the water inlet pipe (27) is installed through the top of the filter box (21). The telescopic pipe (26) and the water inlet pipe (27) are fixedly connected by a flange. A solenoid valve (28) is provided on the side wall of the water inlet pipe (27).

7. An ultrasonic cleaner for cleaning industrial parts according to claim 4, characterized in that, The separation box assembly includes a flow guide box (31), a flow guide pipe (32) disposed at the bottom of the flow guide box (31), and a coalescing filter element (33) disposed inside the flow guide box (31). The two flow guide boxes (31) are respectively disposed on the opposite outer walls of the cleaning tank (11). The flow guide box (31) is matched with the flow guide port (12). The top and bottom ends of the flow guide pipe (32) are respectively connected to the flow guide box (31) and the cleaning tank (11), and the bottom end of the flow guide pipe (32) is higher than the top end of the filter screen (22).

8. An ultrasonic cleaner for cleaning industrial parts according to claim 1, characterized in that, The bearing assembly includes two folding plates (41), which are respectively disposed on the inner walls of opposite sides of the cleaning tank (11). The top of the folding plate (41) is provided with a plurality of protruding posts (42), and a bearing net (43) is provided between the two folding plates (41). The bearing net (43) matches the protruding posts (42).

9. An ultrasonic cleaner for cleaning industrial parts according to claim 1, characterized in that, The oil scraping assembly includes two sliding plates (51), which are slidably disposed in the cleaning cylinder (11) through two adjacent sliding grooves (13). Two limiting posts (52) are provided through the bottom end of the sliding plate (51), and a float plate (53) is slidably sleeved between the two adjacent limiting posts (52). The density of the float plate (53) is less than the density of the cleaning fluid.

10. An ultrasonic cleaner for cleaning industrial parts according to claim 9, characterized in that, The drive mechanism includes two rotating shafts (61), which are mounted on the outer walls of the cleaning cylinder (11) on opposite sides via supports. Two pulleys (62) are provided on the shaft of the rotating shaft (61). A synchronous belt (63) is provided between the two pulleys (62) on the same side of the cleaning cylinder (11). Parallel clamps (64) are provided between the two ends of the sliding plate (51) and the adjacent synchronous belts (63). A servo motor (65) is provided on the outer wall of the cleaning cylinder (11). The output shaft of the servo motor (65) is fixedly connected to the adjacent rotating shaft (61) via a coupling.

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