Ultrasonic cleaning device

Abstract

The utility model discloses an ultrasonic cleaning device which comprises a cleaning box with a hollow containing cavity. The ultrasonic cleaning assembly is arranged in the containing cavity; the ultrasonic cleaning assembly comprises a cleaning inner shell and an ultrasonic generator; the cleaning inner shell is provided with a cleaning inner cavity, and the cleaning inner cavity communicates with the containing cavity through a through hole formed in the cleaning inner shell. At least two ultrasonic generators are arranged along the outer surface of the cleaning inner shell, and ultrasonic waves generated by the ultrasonic generators are at least gathered at one point or one space area in the cleaning inner cavity. According to the ultrasonic cleaning device, the ultrasonic generators are arranged in the at least two directions, the sample or the to-be-cleaned object is subjected to ultrasonic cleaning through ultrasonic waves generated in multiple dimensions, cleaning dead angles are effectively avoided, and the cleaning efficiency and effect of the to-be-cleaned object are improved.

Description

Technical Field

[0001] This application belongs to the field of ultrasonic cleaning technology, and in particular relates to an ultrasonic cleaning device. Background Technology

[0002] Currently, ultrasonic cleaning devices typically use an ultrasonic generator placed at the bottom to produce ultrasonic waves, thereby cleaning samples or items inside the container. However, due to the strong directionality of ultrasonic waves, existing ultrasonic cleaning devices suffer from drawbacks such as cleaning dead zones and low cleaning efficiency. Utility Model Content

[0003] This application provides an ultrasonic cleaning device capable of completely cleaning samples or items inside a container.

[0004] In a first aspect, this application provides an ultrasonic cleaning apparatus, comprising:

[0005] The cleaning tank has a hollow receiving cavity;

[0006] An ultrasonic cleaning assembly is disposed within a receiving cavity; the ultrasonic cleaning assembly includes a cleaning inner shell and ultrasonic generators; the cleaning inner shell is provided with a cleaning inner cavity, and the cleaning inner cavity is connected to the receiving cavity through a through hole provided on the cleaning inner shell; at least two ultrasonic generators are disposed along the outer surface of the cleaning inner shell, and the ultrasonic waves generated by the ultrasonic generators are at least converged at a point or a spatial region within the cleaning inner cavity.

[0007] According to an embodiment of the first aspect of this application, the cleaning inner shell is cubic in shape, and a cleaning cavity is formed downward from the top opening of the cleaning inner shell. An ultrasonic generator is disposed on the bottom outer surface of the cleaning inner shell and on one side surface that forms a dihedral angle with the bottom outer surface of the cleaning inner shell. The ultrasonic waves generated by the ultrasonic generator disposed on the bottom outer surface of the cleaning inner shell and the ultrasonic generator disposed on the side surface that forms a dihedral angle with the bottom outer surface of the cleaning inner shell converge in a spatial region within the cleaning cavity.

[0008] According to an embodiment of the first aspect of this application, an ultrasonic generator is provided on a surface of the cleaning inner shell that is perpendicular to the bottom outer surface and at least one side surface of the cleaning inner shell.

[0009] According to an embodiment of the first aspect of this application, an ultrasonic generator is disposed at a preset angle α adjacent to one side surface that forms a dihedral angle with the outer surface of the bottom of the cleaning inner shell, so that the generated ultrasonic waves converge at a point in the cleaning inner cavity.

[0010] According to an embodiment of the first aspect of this application, a mounting plate for placing items to be cleaned is fixedly disposed inside the inner shell of the cleaning unit.

[0011] According to an embodiment of the first aspect of this application, the ultrasonic cleaning device further includes: a support frame and a movable part disposed on the upper part of the cleaning inner shell, and clamping members; the movable part is disposed at both ends of the support frame located in the cleaning inner cavity, and the clamping members are respectively connected to the movable part of the support frame and disposed opposite to each other, the movable part enables the clamping members to move towards or away from each other, and the clamping members can extend into the cleaning inner cavity and clamp the item to be cleaned and rotate.

[0012] According to an embodiment of the first aspect of this application, the cleaning inner shell is cylindrical and fixedly disposed in the receiving cavity; ultrasonic generators are arranged at intervals around the central axis along the outer peripheral surface of the cleaning inner shell, and the sound waves generated by the ultrasonic generators converge in a spatial region within the cleaning inner cavity.

[0013] According to an embodiment of the first aspect of this application, a rotatable fixing plate and a fixing strap for fixing the items to be cleaned are provided inside the cleaning inner shell.

[0014] According to an embodiment of the first aspect of this application, the ultrasonic cleaning assembly further includes a drive component for driving the fixed plate to rotate.

[0015] According to an embodiment of the first aspect of this application, the ultrasonic cleaning assembly further includes a fixed rod, a driving member, and a rotating pin. The fixed rod is disposed on the outer surface of the cleaning inner shell adjacent to the ultrasonic generator. The ultrasonic generator is rotatably connected to the cleaning inner shell through the rotating pin. The driving member is connected to the end of the ultrasonic generator away from the cleaning inner shell.

[0016] The ultrasonic cleaning device of this application embodiment generates ultrasonic waves in multiple dimensions to clean samples or items by setting ultrasonic generators in at least two directions, effectively avoiding cleaning dead spots and improving cleaning efficiency and effect. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the ultrasonic cleaning device provided in the embodiments of this application.

[0019] Figure 2 This is a schematic diagram of the support frame, moving part, and clamping component in the ultrasonic cleaning device provided in the embodiments of this application.

[0020] Figure 3 This is a schematic diagram of the ultrasonic cleaning device including a support frame, a moving part, and a clamping member provided in the embodiments of this application.

[0021] Figure 4 This is a schematic diagram of the ultrasonic cleaning device provided in this application embodiment using ultrasonic waves to clean the items to be cleaned.

[0022] Figure 5 This is a schematic diagram of the operation of an ultrasonic cleaning device provided in an embodiment of this application.

[0023] Figure 6 This is a schematic diagram of the structure of an ultrasonic cleaning device provided in another embodiment of this application.

[0024] Figure 7 This is a schematic diagram of the ultrasonic cleaning device provided in another embodiment of this application.

[0025] Figure 8 This is a schematic diagram of the cleaning inner shell and ultrasonic generator in an ultrasonic cleaning device provided in an embodiment of this application.

[0026] Explanation of reference numerals in the attached drawings: 1. Cleaning tank; 2. Receiving cavity; 3. Ultrasonic cleaning assembly; 30. Cleaning inner shell; 31. Cleaning inner cavity; 32. Ultrasonic generator; 33. Through hole; 34. Fixing rod; 35. Driving component; 36. Rotating pin; 4. Mounting plate; 5. Support frame; 6. Moving part; 7. Clamping component; 8. Fixing plate; 9. Fixing strap; 10. Driving component; 11. Spatial area; 12. Item to be cleaned; 13. Connecting rod; L. Central axis; α. Preset included angle; β. Dihedral angle formed by the bottom outer surface and one side surface of the cleaning inner shell. Detailed Implementation

[0027] The features and exemplary embodiments of various aspects of this application will be described in detail below. To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain this application and not to limit it. For those skilled in the art, this application can be implemented without some of these specific details. The following description of the embodiments is merely to provide a better understanding of this application by illustrating examples.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes said element.

[0029] As described in the background section, the inventors of this application have found that, due to the strong directionality of ultrasonic cleaning, existing ultrasonic cleaning devices have drawbacks such as cleaning dead zones and low efficiency.

[0030] To address the problems of the prior art, this application provides an ultrasonic cleaning device. The ultrasonic cleaning device provided in this application will be described below.

[0031] Figure 1 A schematic diagram of the structure of an ultrasonic cleaning apparatus according to an embodiment of this application is shown. Figure 1 As shown, the ultrasonic cleaning device includes: a cleaning tank 1 with a hollow receiving cavity 2; an ultrasonic cleaning assembly disposed within the receiving cavity 2; the ultrasonic cleaning assembly includes a cleaning inner shell 30 and ultrasonic generators 32; the cleaning inner shell 30 is provided with a cleaning inner cavity 31, and the cleaning inner cavity 31 is connected to the receiving cavity 2 through a through hole 33 provided on the cleaning inner shell 30; at least two ultrasonic generators 32 are disposed along the outer surface of the cleaning inner shell 30, and the ultrasonic waves generated by the ultrasonic generators 32 are at least converged at a point or a spatial region within the cleaning inner cavity 31.

[0032] The ultrasonic cleaning device in the embodiments of this application, such as Figure 4 As shown, ultrasonic generators can be arranged on the inner shell of the cleaning device in at least two directions, and a switch can be designed to control the ultrasonic generator in a single direction, so as to more effectively use the ultrasonic cleaning device to perform ultrasonic cleaning on the parts to be cleaned from different directions, thereby improving the effect and efficiency of ultrasonic cleaning.

[0033] This application does not explicitly limit the shape of the cleaning tank 1. Optionally, the shape of the cleaning tank may be a cube, a sphere, or an ellipsoid with a receiving cavity. For example, the shape of the cleaning tank 1 may be a cuboid or a cube.

[0034] In some embodiments, such as Figure 1As shown, the inner cleaning shell 30 is cubic in shape, with a cleaning cavity 31 formed downwards from the top opening of the inner cleaning shell 30. The inner cleaning shell 30 is fixedly installed within the receiving cavity 2, and its position cannot be moved. An ultrasonic generator 32 is disposed on the bottom outer surface of the inner cleaning shell 30 and on one surface forming a dihedral angle with the bottom outer surface. The ultrasonic waves generated by the ultrasonic generator 32 on the bottom outer surface and the ultrasonic generator 32 on the surface forming a dihedral angle with the bottom converge in a spatial region within the cleaning cavity 31 to perform ultrasonic cleaning on the items to be cleaned within this spatial region. Wherein, as... Figure 1 As shown, the surface that forms a dihedral angle with the bottom outer surface of the inner cleaning shell 30 can be the outer surface of any sidewall connected to the bottom of the inner cleaning shell. For example, Figure 1 The ultrasonic generator can be mounted on the outer surface of the left sidewall, which is perpendicular to the bottom of the inner casing. It is understood that the ultrasonic generator can also be mounted on... Figure 1 The right sidewall, front sidewall, or rear sidewall of the inner shell is not explicitly limited herein. It should be noted that, since the shape of the inner shell 30 can be various, the dihedral angle β formed by the bottom outer surface of the inner shell and the side surface forming a dihedral angle with the bottom outer surface of the inner shell satisfies 30° ≤ β ≤ 150°. For example, the dihedral angle β can be 35°, 45°, 60°, 75°, 90°, 100°, 110°, 120°, 135°, or 145°.

[0035] The ultrasonic cleaning device of this application embodiment can arrange ultrasonic generators in three dimensions and multiple directions in the inner shell of the cleaning device to generate multi-dimensional ultrasonic waves, so that the ultrasonic waves are focused on a point or a spatial area in the inner cavity of the cleaning device to clean the items to be cleaned. It has the advantages of cleaning without dead angles and high cleaning efficiency.

[0036] The ultrasonic cleaning device of this application embodiment can be applied to the cleaning of various precision parts, as well as parts with complex shapes.

[0037] In some embodiments, the cleaning inner shell 30 is provided with an ultrasonic generator 32 on a surface perpendicular to the bottom outer surface of the cleaning inner shell and the at least one side surface.

[0038] In the embodiments of this application, such as Figure 1 and Figure 4As shown, the cleaning inner shell 30 has an ultrasonic generator 32 disposed on its bottom outer surface and another ultrasonic generator 32 disposed on a surface perpendicular to the surface disposed on at least one side. This allows for the generation of ultrasonic waves in three directions within the cleaning inner cavity 31, converging in a spatial area within the cleaning inner cavity 31. This enables comprehensive ultrasonic cleaning of the items to be cleaned within the cleaning inner cavity 31, effectively removing residual materials from hard-to-reach areas from three different directions, thus improving cleaning efficiency. It should be noted that regardless of whether the cleaning inner shell 30 is cubic or cylindrical, it can be fixedly connected to the receiving cavity 2 of the cleaning chamber 1 using fixing components, or fixedly disposed in the receiving cavity 2 by welding, embedding, or other methods. It should also be noted that the ultrasonic generators 32 can be arranged in an array on the bottom outer surface or other surfaces of the cleaning inner shell 30 to generate ultrasonic waves converging in a spatial area within the cleaning inner cavity.

[0039] In some embodiments, such as Figure 5 As shown, the ultrasonic generator 32 is positioned at a preset angle to one of the surfaces that forms a dihedral angle with the bottom outer surface of the cleaning inner shell 30. The generated ultrasonic waves converge at a point within the cleaning inner cavity 31 to perform ultrasonic cleaning of the substances that need to be removed from the items to be cleaned.

[0040] In the embodiments of this application, the ultrasonic generator 32, positioned adjacent to one surface forming a dihedral angle with the bottom outer surface of the cleaning inner shell 30, is set at a preset angle α. This allows the ultrasonic waves generated by the ultrasonic generator to converge at a single point within the cleaning inner cavity 31, enhancing the cleaning effect and enabling ultrasonic cleaning of substances that need to be removed from the items to be cleaned. This ensures thorough cleaning of hard-to-reach areas or difficult-to-remove substances, improving cleaning quality. The preset angle α satisfies the following condition: 1° ≤ α ≤ 45°. For example, the preset angle α can be 2°, 3°, 5°, 10°, 20°, 25°, 27°, 30°, 36°, or 40°. The preset angle α can be fixed at the aforementioned angles. Alternatively, it can be rotated to allow the ultrasonic generator 32 to perform thorough ultrasonic cleaning of the items to be cleaned within the cleaning inner shell during rotation.

[0041] In some of the embodiments of this application, such as Figure 6As shown, the ultrasonic cleaning assembly also includes a fixing rod 34, a driving component 35, and a rotating pin 36. The fixing rod 34 is located on the outer surface of the cleaning inner shell 30 near the ultrasonic generator 32. The ultrasonic generator 32 is rotatably connected to the cleaning inner shell 30 via the rotating pin 36. The driving component 35 is rotatably connected to the end of the ultrasonic generator 32 facing away from the cleaning inner shell 30, so that the ultrasonic generator 32 can rotate around the rotating pin 36 under the drive of the driving component 35 to adjust the angle of the ultrasonic generator 32. This allows the ultrasonic generator 32 to generate ultrasonic waves in different directions into the cleaning inner cavity 31, so as to fully perform ultrasonic cleaning on the items to be cleaned. The driving component 35 can be a cylinder, a hydraulic cylinder, or a lead screw, which drives the ultrasonic generator to rotate around the rotating pin 36 at a certain angle on the outer surface of the cleaning inner shell 30 via the extension or retraction of the telescopic rod in the cylinder, so as to adjust the angle of the ultrasonic waves generated by the ultrasonic generator.

[0042] In some embodiments, such as Figure 1 As shown, a mounting plate 4 for placing items to be cleaned is fixedly installed inside the inner shell 30. This allows the items to be placed on the mounting plate 4 for ultrasonic cleaning. By adjusting the position of the items on the mounting plate 4, ultrasonic waves generated by an ultrasonic generator in three-dimensional directions can be used to ultrasonically clean different parts of the items.

[0043] In some embodiments, such as Figure 2 and Figure 3 As shown, the ultrasonic cleaning device also includes: a support frame 5 and a moving part 6 disposed on the upper part of the cleaning inner shell 30, and a clamping member 7; the moving part 6 is disposed at both ends of the support frame 5 located in the cleaning inner cavity 31, and the clamping member 7 is disposed opposite to the moving part 6 respectively. The moving part 6 causes the clamping member 7 to move towards or away from each other, and the clamping member 7 extends into the cleaning inner cavity 31 to clamp and rotate the item to be cleaned.

[0044] In the embodiments of this application, such as Figure 3 As shown, the lower part of the support frame 5 extends into the cleaning cavity 31 through the top opening of the cleaning inner shell 30. The moving part 6 is provided at the lower end of the support frame 5, so that the clamping members 7 connected to the moving part can move closer to each other or further away from each other. They are set at a predetermined distance to clamp items of different shapes or sizes to be cleaned. The items to be cleaned held by the clamping members 7 are surrounded by the ultrasonic generator 32 provided on the outer surface of the cleaning inner shell 30. The clamping members 7 drive the clamped items to be cleaned to rotate, so that the ultrasonic waves generated by the ultrasonic generator 32 perform ultrasonic cleaning on the items to be cleaned held by the clamping members 7 during rotation, so that all parts of the items to be cleaned can be cleaned without dead angles, thus improving cleaning efficiency.

[0045] In some embodiments of this application, the support frame 5 is movably disposed within the cleaning cavity 31 to allow for thorough immersion of the items to be cleaned within the cleaning cavity 31 in the cleaning solution, thereby achieving a cleaner result through ultrasonic cleaning. In some examples, the support frame 5 can be completely removed from the cleaning cavity 31, i.e., the support frame 5 is movably disposed within the cleaning cavity 31 of the cleaning housing 30. It is understood that the support frame 5 may also be at least partially connected to the cleaning housing 30 to allow for at least partial or complete removal of the support frame 5 from the cleaning cavity 31 to accommodate the items to be cleaned. The moving part 6 can move closer to or further away from the other lower end of the support frame 5 from its lower end, thereby adjusting the distance between the moving parts and allowing the ultrasonic cleaning assembly to adapt to items of different shapes and sizes. The moving part 6 may be a cylinder, hydraulic cylinder, or lead screw connected to the lower end of the support frame and the clamping member 7, respectively. The clamping member 7 is a tapered disc with an increasing inner diameter extending from the lower end of the support frame 5 towards the moving part 6. It is understood that the clamping member 7 may also be a clamping disc, made of a material with gradually increasing elasticity from the lower end of the support frame 5 toward the moving part 6. For example, the clamping disc may be made of silicone or rubber or a composite material with increasing elasticity from the lower end of the support frame 5 toward the moving part 6, to adapt to the different shapes and sizes of the items to be cleaned and to clamp the items to be cleaned.

[0046] In other embodiments, such as Figure 7 and Figure 8 As shown, the cleaning inner shell 30 is cylindrical and fixedly installed in the receiving cavity 2; multiple sets of ultrasonic generators 32 are arranged along the outer circumference of the cleaning inner shell 30 and around the central axis L, and the ultrasonic waves generated by the ultrasonic generators converge in a spatial area within the cleaning inner cavity.

[0047] In the embodiments of this application, multiple sets of ultrasonic generators 32 are arranged along the outer peripheral surface of the cylindrical cleaning inner shell 30 and around the central axis L of the cleaning inner shell 30, so that ultrasonic waves can be concentrated on the central axis L and its periphery to clean the items to be cleaned in this spatial area, so as to effectively clean the parts to be cleaned.

[0048] Of course, it is understood that the cross-section of the cylindrical cleaning inner shell 30 can be circular, rectangular, or a regular polygon, and this application does not explicitly limit this. For example, the polygon can be a triangle, square, regular pentagon, hexagon, heptagon, octagon, nonagon, etc. Preferably, the cleaning inner shell 30 has a circular cross-section.

[0049] In some embodiments, the inner cleaning shell 30 is provided with a rotatable fixing plate 8 and a fixing strap 9 for fixing the item 12 to be cleaned to the fixing plate 8.

[0050] In some embodiments, the fixing plate 8 is located on or around the central axis L of the cleaning inner shell 30, so that while the fixing plate 8 rotates about or around the central axis L, ultrasonic waves generated by an ultrasonic generator disposed on the outer surface of the cleaning inner shell 30 are used to quickly and thoroughly clean the items to be cleaned.

[0051] Optionally, in some embodiments, 4 to 8 pairs of ultrasonic generators 32 can be arranged along the outer surface of the cleaning inner shell 30 and around the central axis L, so that the ultrasonic waves generated by the ultrasonic generators are focused on a point or a spatial area within the cleaning inner cavity.

[0052] In the embodiments of this application, a rotatable fixing plate 8 disposed inside the cleaning inner shell 30 can stably fix the item to be cleaned 12 onto the fixing plate 8 via a fixing strap 9, so as to perform ultrasonic cleaning on the item to be cleaned.

[0053] In some embodiments, the ultrasonic cleaning assembly further includes a driving component 10 for driving the fixed plate 8 to rotate. The driving component 10 can be a drive motor, and the driving component 10 is connected to the fixed plate 8 via a connecting rod 13, so that the fixed plate 8 and the items to be cleaned disposed thereon rotate under the drive of the driving component 10 to perform ultrasonic cleaning. Optionally, when the items to be cleaned have multiple surfaces, nine items to be cleaned can be disposed on the fixed plate 8 at multiple different angles using a fixing strap, and the items to be cleaned can be rotated under the drive of the driving component 10 to perform multi-angle ultrasonic cleaning, thereby achieving thorough cleaning of the items to be cleaned without dead angles.

[0054] The above description is merely a specific implementation of this application. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working process described above can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here. It should be understood that the protection scope of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the protection scope of this application.

Claims

1. An ultrasonic cleaning device, characterized in that, include: The cleaning tank has a hollow receiving cavity; An ultrasonic cleaning assembly is disposed within the receiving cavity; the ultrasonic cleaning assembly includes a cleaning inner shell and an ultrasonic generator; the cleaning inner shell has a cleaning inner cavity, which communicates with the receiving cavity through a through hole provided on the cleaning inner shell; a mounting plate for placing items to be cleaned is fixedly disposed inside the cleaning inner shell; at least two ultrasonic generators are disposed along the outer surface of the cleaning inner shell, and the ultrasonic waves generated by the ultrasonic generators converge at least at one point or a spatial region within the cleaning inner cavity; the ultrasonic cleaning assembly further includes a fixing rod, a driving component, and a rotating pin, the fixing rod being disposed on the outer surface of the cleaning inner shell and adjacent to the side of the ultrasonic generator, the ultrasonic generator being rotatably connected to the cleaning inner shell through the rotating pin, and the driving component being connected to the end of the ultrasonic generator opposite to the cleaning inner shell.

2. The ultrasonic cleaning device according to claim 1, characterized in that, The cleaning inner shell is cubic in shape, and a cleaning cavity is formed by the top opening of the cleaning inner shell facing downwards. The ultrasonic generator is disposed on the bottom outer surface of the cleaning inner shell and on one side surface that forms a dihedral angle with the bottom outer surface of the cleaning inner shell. The ultrasonic waves generated by the ultrasonic generator disposed on the bottom outer surface of the cleaning inner shell and the ultrasonic generator disposed on the side surface that forms a dihedral angle with the bottom outer surface of the cleaning inner shell converge in a spatial region within the cleaning cavity.

3. The ultrasonic cleaning device according to claim 2, characterized in that, The cleaning inner shell has ultrasonic generators installed on the outer surface of the bottom of the cleaning inner shell and on the surface perpendicular to at least one side surface.

4. The ultrasonic cleaning device according to claim 2, characterized in that, The ultrasonic generators, which are located on one side of the surface that forms a dihedral angle with the bottom, are positioned at a preset angle, and the generated ultrasonic waves converge at a point within the cleaning cavity.

5. The ultrasonic cleaning device according to claim 1, characterized in that, Also includes: The support frame and the movable part, as well as the clamping members, are disposed on the upper part of the inner shell of the cleaning chamber. The movable part is disposed on the support frame and located at both ends within the inner cavity of the cleaning chamber. The clamping members are respectively disposed opposite to the movable part. The movable part enables the clamping members to move towards or away from each other, and the clamping members can extend into the inner cavity of the cleaning chamber to clamp and rotate the item to be cleaned.

6. The ultrasonic cleaning device according to claim 1, characterized in that, The cleaning inner shell is cylindrical and fixedly installed in the receiving cavity; the ultrasonic generator is arranged at intervals around the central axis of the cleaning inner shell along the outer circumference of the cleaning inner shell, and the sound waves generated by the ultrasonic generator converge in a spatial area within the cleaning inner cavity.

7. The ultrasonic cleaning apparatus according to claim 6, characterized in that, The inner cleaning shell is equipped with a rotatable fixing plate and a fixing strap for fixing the items to be cleaned.

8. The ultrasonic cleaning apparatus according to claim 7, characterized in that, The ultrasonic cleaning assembly also includes a drive component for driving the fixed plate to rotate.

9. The ultrasonic cleaning apparatus according to claim 7, characterized in that, The fixing plate is located on or around the central axis of the inner cleaning shell.

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