CN114289397A - Acoustic reflection top cover structure for ultrasonic cleaning device - Google Patents
Acoustic reflection top cover structure for ultrasonic cleaning device Download PDFInfo
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- CN114289397A CN114289397A CN202111507827.8A CN202111507827A CN114289397A CN 114289397 A CN114289397 A CN 114289397A CN 202111507827 A CN202111507827 A CN 202111507827A CN 114289397 A CN114289397 A CN 114289397A
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Abstract
The invention discloses an acoustic reflection top cover structure for an ultrasonic cleaning device, and relates to the technical field of ultrasonic cleaning. On the basis of not changing the structure of the existing ultrasonic cleaning device, the top cover is additionally arranged, so that the acoustic energy dissipation caused by the fact that tension waves and the atomization effect of a gas-liquid interface are excited can be effectively reduced. The ultrasonic wave diffuse reflection device comprises an acoustic reflection top cover and a two-dimensional motion platform, wherein the bottom surface of the acoustic reflection top cover is a plane or is provided with a microstructure for enhancing the diffuse reflection of ultrasonic waves; the acoustic reflection top cover is driven by the two-dimensional motion platform and is placed in the cleaning solution of the cleaning tank. The top cover is simple in structure and convenient to install, and can conveniently and effectively improve the cleaning efficiency of the large ultrasonic cleaning device.
Description
Technical Field
The invention relates to the technical field of ultrasonic cleaning, in particular to an acoustic reflection top cover structure for an ultrasonic cleaning device.
Background
Ultrasonic cleaning technology was first introduced in the 30's of the 20 th century and its extensive research and application has never been interrupted in the future. Ultrasonic cleaning has only been a history of decades, but its superior performance and economy are well demonstrated. Ultrasonic cleaning is rapidly becoming an indispensable part of manufacturing processes of various industries and various products.
Most of the large-scale ultrasonic cleaning devices commonly used in the industry at present are open without top covers so as to facilitate the automatic transportation of cleaning objects, and few of the large-scale ultrasonic cleaning devices provided with protective top covers consider the harm of aerogel and sputtering phenomena caused by the transmission of ultrasonic waves in cleaning liquid to operators, but acoustic energy dissipation caused by surface tension waves and atomization effects exists in a gas-liquid interface.
Disclosure of Invention
Aiming at the problems, the invention provides the acoustic reflection top cover structure for the ultrasonic cleaning device, and the acoustic energy dissipation caused by the tension wave for exciting a gas-liquid interface and the atomization effect can be effectively reduced by additionally arranging the top cover on the basis of not changing the structure of the conventional ultrasonic cleaning device.
The technical scheme of the invention is as follows: the acoustic reflection top cover structure comprises an acoustic reflection top cover 1 and a two-dimensional motion platform, wherein a suspension point 2 is arranged on the acoustic reflection top cover 1, and the bottom surface of the acoustic reflection top cover 1 is a plane or is provided with a microstructure for enhancing diffuse reflection of ultrasonic waves; the two-dimensional motion platform is connected with the suspension point 2, drives the acoustic reflection top cover 1 to reciprocate along the X direction and the Z direction through the two-dimensional motion platform, and is placed in the cleaning liquid of the cleaning tank. Therefore, a sound field boundary is formed by the top cover, the generation area of the ultrasonic cavitation effect is limited, the vertical distance between the ultrasonic cavitation effect and the radiation surface of the transducer of the ultrasonic cleaning device is the sound field distance, the sound field distance can be adjusted along with the up-and-down movement of the acoustic reflection top cover, and the adjustment range is from the top of the carrying basket to the surface of the cleaning liquid.
The acoustic reflection top cover 1 is made of metal or high polymer material.
The microstructure is planar, periodic concave, periodic convex or large-curvature micro periodic concave.
As shown in fig. 2a and 2b, when the microstructure is a periodic convex or concave, it is composed of a plurality of reflective ridges or reflective grooves uniformly distributed on the bottom surface of the acoustic reflection top cover, and can diffusely reflect acoustic energy into the cleaning solution.
As shown in fig. 3-4, when the microstructure is a micro-periodic concave with large curvature, it is composed of a plurality of arc-shaped reflective pits uniformly distributed on the bottom surface of the acoustic reflective top cover, and the pits are part of a spherical surface with large curvature (preferably, the radius of the spherical surface with large curvature is equal to the liquid level of the cleaning liquid), so that the acoustic energy can be focused on the plane where the spherical center is located at a far position. Therefore, the surface tension wave formed by the ultrasonic waves which are directed to the gas-liquid interface through the liquid can be further reduced by the aid of the microstructures with different forms, and dissipation of sound energy when the driving interface vibrates to generate an atomization effect is better reduced.
The two-dimensional motion platform comprises a Z-direction driving mechanism fixedly connected to the rack and an X-direction driving mechanism connected with the suspension point 2, wherein the Z-direction driving mechanism and the X-direction driving mechanism are linear driving mechanisms, such as a hydraulic cylinder, an air cylinder or an electric push rod and the like, all the linear driving mechanisms are provided with fixing portions and movable portions, such as a cylinder body, a cylinder rod, a piston cylinder, a piston rod, a base and a screw rod, the Z-direction driving mechanism fixing portions are fixedly connected to the rack, the X-direction driving mechanism fixing portions are fixedly connected to the Z-direction driving mechanism movable portions, and the X-direction driving mechanism movable portions are fixedly connected with the suspension point 2 on the sound reflection top cover 1. Thus, the two-dimensional motion platform is rigidly connected with the sound reflection top cover and cannot easily shake. And after the two-dimensional motion platform is connected with the sound reflection top cover, the sound reflection top cover can be controlled to move back and forth along the X direction or move up and down along the Z direction. The sound reflection top cover firstly stays on the ground outside the cleaning dish, waits for a loading basket loaded with an object to be cleaned to be placed in the cleaning dish, moves forwards to the upper part of the cleaning dish, and moves downwards to be immersed into the liquid level of the cleaning liquid.
The ultrasonic cleaning device comprises a cleaning vessel 6, a carrying basket 5 and a hanging rope 4, wherein one end of the hanging rope 4 is fixedly connected to the rack above the cleaning vessel 6, the other end of the hanging rope 4 is fixedly connected with the carrying basket 5, and the carrying basket 5 is suspended in the cleaning vessel 6 through the hanging rope 4;
the sound reflection top cover 1 is further provided with a reserved gap 3 arranged along the X direction, and the width of the reserved gap 3 is larger than the outer diameter of the hanging rope;
the hanging ropes 4 are multiple and are respectively positioned on two XZ planes, the reserved gaps 3 are also two, and the centers of the two reserved gaps 3 are respectively positioned in the two XZ planes. Therefore, when the sound reflection top cover moves in the X direction or the Z direction, the sound reflection top cover and the hanging rope are prevented from generating movement interference.
The working principle of the invention is as follows:
the ultrasonic transducer on the bottom surface of the large ultrasonic cleaning device works in an ultrasonic frequency range, and the generated ultrasonic waves are transmitted in the cleaning liquid to cause a cavitation effect;
the acoustic impedance of the acoustic reflection top plate is greatly different from that of the cleaning liquid, a hard acoustic field boundary is formed at the boundary, ultrasonic reflection is strengthened, and acoustic energy dissipation caused by exciting tension waves of a gas-liquid interface and an atomization effect is effectively reduced.
In addition, the distance between the sound reflection top cover and the bottom surface of the cleaning dish is adjusted, so that the cavitation bubble dense position moves up and down, and the object to be cleaned is cleaned uniformly and efficiently.
Before the work, at first with acoustic reflection top cap stop outside the cleaning dish ground top, and be located the plane that is higher than the cleaning dish top, wait to load and wait to hold the thing basket of the object of waiting to wash and put down in the cleaning dish after, move forward to cleaning dish top, dip in the washing liquid level downwards. At the moment, the ultrasonic transducer works, the sound reflection cover plate periodically reciprocates and moves up and down, and efficient and uniform cleaning is realized.
The invention utilizes ultrasonic reflection to improve the cleaning efficiency, and has the advantages that the structure of a large ultrasonic cleaning device is not required to be changed, and the acoustic energy loss caused by surface tension waves and atomization effect at a gas-liquid interface is reduced and the sound field intensity in the cleaning liquid is increased only by additionally arranging the acoustic reflection top cover. Through carrying out micro-structural design to the top cap bottom, can strengthen ultrasonic wave diffuse reflection, obtain the higher filth efficiency of getting rid of and more even cleaning performance than the ultrasonic cleaning device who does not add the commentaries on classics top cap. The top cover is simple in structure and convenient to install, and can conveniently and effectively improve the cleaning efficiency of the large ultrasonic cleaning device. Furthermore, the mounting top cover is suitable for various types of ultrasonic cleaning devices, and is high in applicability and reliability. Particularly, in the invention, the distance between the top cover and the bottom of the cleaning dish can be adjusted, and the sound energy waste caused by the standing wave phenomenon can be effectively avoided for different working frequencies.
Drawings
FIG. 1 is a schematic structural diagram of the present disclosure;
FIG. 2a is a schematic structural diagram of the present invention when the microstructure is in a periodic convex shape;
FIG. 2b is a schematic structural diagram of the present invention when the microstructure is in a periodic concave shape;
FIG. 3 is a schematic structural diagram of the microstructure of the present application in the form of a large-curvature micro-periodic concave surface;
FIG. 4 is a schematic structural diagram of a reflective pit in the present case;
in the figure, 1-sound reflection top cover, 2-suspension point, 3-reserved gap, 4-hanging rope, 5-carrying basket and 6-cleaning vessel.
Detailed Description
In order to clearly explain the technical features of the present patent, the following detailed description of the present patent is provided in conjunction with the accompanying drawings.
As shown in fig. 1, the ultrasonic cleaning apparatus employed in the present embodiment includes: an acoustic reflection top cover 1 for reflecting ultrasonic waves; the two-dimensional motion platform is used for connecting the sound reflection top cover to realize the back-and-forth motion in the X direction and the up-and-down motion in the Z direction; a gap 3 is reserved to facilitate the passing of a lifting rope; the lifting rope 4 is used for hanging the carrying basket; a carrying basket 5 for carrying an object to be cleaned; a cleaning dish 6 in which a cleaning liquid such as ultrapure water or the like is contained.
As shown in fig. 1, the acoustic reflection cap 1 is used to reflect ultrasonic waves, form a boundary of a sound field, and limit an occurrence region of an ultrasonic cavitation effect. The distance between the bottoms of the other cleaning dishes 6 is a sound field distance, the sound field distance is adjustable, and the adjustment range is from the top of the carrying basket to the surface of the cleaning liquid.
As shown in figure 1, the sound reflection top cover is provided with two reserved gaps 3, and the reserved gaps are matched with the positions of the hanging ropes of the carrying basket. When the sound reflection top cover moves, the sound reflection top cover does not contact with the hanging rope and the carrying basket, and the hanging rope and the carrying basket do not shake.
Before operation, the acoustic reflection roof 1 is first rested above the ground outside the wash bowl 6, on a plane above the top of the wash bowl 6. After the object carrying basket 5 for loading the object to be cleaned is placed in the cleaning dish through the lifting rope 4, the sound reflection top cover 1 moves forwards to the upper part of the cleaning dish under the action of the two-dimensional motion platform 2 and is immersed into the liquid level of the cleaning liquid downwards.
Furthermore, after the sound reflection top cover is immersed in the liquid level of the cleaning liquid, the ultrasonic transducer on the bottom surface of the large ultrasonic cleaning device works in an ultrasonic frequency range, and the generated ultrasonic waves are transmitted in the cleaning liquid to trigger a cavitation effect.
Further, as shown in fig. 1, the acoustic reflection roof 1 reciprocates up and down in the Z direction by the two-dimensional moving platform 2. The position where the cavitation bubbles are densely packed in the cleaning solution is moved up and down to uniformly and efficiently clean all parts of the object to be cleaned.
Example 1:
the experimental operating environment was 201 ℃ and the ultrasonic transducer operating frequency f =65.0 KHz. The object to be cleaned is metal parts, and stubborn dirt such as organic oil on the surfaces of the parts. The ultrasonic cleaning method comprises the following steps of selecting an ultrasonic reflection cover made of a metal material, selecting a concave tooth sound focusing structure on the lower surface of the reflection cover, and applying ultrasonic waves to perform ultrasonic cleaning. Compared with a control group which is not provided with the ultrasonic reflection cover and has the same cleaning time and power, the cleaning efficiency is improved by 37.3 percent.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages: on the basis of not changing the structure of the existing ultrasonic cleaning device, the top cover is additionally arranged, so that acoustic energy dissipation caused by surface tension waves and an atomization effect can be effectively reduced, the structure is simple, the installation and the rotation are convenient, the cleaning efficiency of the ultrasonic cleaning device can be conveniently and effectively improved, and a more uniform cleaning effect is obtained; the acoustic reflection top cover is suitable for various ultrasonic cleaning devices, and has strong applicability and reliability; in addition, the distance between the top cover and the bottom of the cleaning dish is adjustable, and acoustic energy waste caused by standing wave can be effectively avoided for different working frequencies.
The above embodiments are merely illustrative of the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the content of the present invention and implement the present invention, and not to limit the scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the scope of the present invention.
Claims (5)
1. The sound reflection top cover structure for the ultrasonic cleaning device is characterized by comprising a sound reflection top cover (1) and a two-dimensional motion platform, wherein suspension points (2) are arranged on the sound reflection top cover (1), and the bottom surface of the sound reflection top cover (1) is a plane or is provided with a microstructure for enhancing diffuse reflection of ultrasonic waves; the two-dimensional motion platform is connected with the suspension point (2), and the sound reflection top cover (1) is driven by the two-dimensional motion platform to reciprocate along the X direction and the Z direction.
2. An acoustic reflection roof construction for an ultrasonic cleaning device according to claim 1, characterized in that the acoustic reflection roof (1) is made of metal or polymer material.
3. The acoustic reflection roof structure for an ultrasonic cleaning apparatus of claim 2, wherein the microstructure is a flat surface, a periodic concave surface, a periodic convex surface, or a micro-periodic concave surface with a large curvature.
4. The acoustic reflection roof structure for the ultrasonic cleaning device according to claim 1, 2 or 3, wherein the two-dimensional motion platform comprises a Z-direction driving mechanism fixedly connected to the frame and an X-direction driving mechanism connected to the suspension point (2), the Z-direction driving mechanism and the X-direction driving mechanism are both linear driving mechanisms, a fixed part of the Z-direction driving mechanism is fixedly connected to the frame, a fixed part of the X-direction driving mechanism is fixedly connected to a movable part of the Z-direction driving mechanism, and the movable part of the X-direction driving mechanism is fixedly connected to the suspension point (2) on the acoustic reflection roof (1).
5. The acoustic reflection roof structure for the ultrasonic cleaning device according to claim 1, 2 or 3, wherein the ultrasonic cleaning device comprises a cleaning dish (6), a carrier basket (5) and a hanging rope (4), one end of the hanging rope (4) is fixedly connected to the frame above the cleaning dish (6), the other end of the hanging rope (4) is fixedly connected to the carrier basket (5), and the carrier basket (5) is suspended in the cleaning dish (6) through the hanging rope (4);
a reserved gap (3) arranged along the X direction is further formed in the sound reflection top cover (1), and the width of the reserved gap (3) is larger than the outer diameter of the hanging rope;
the hanging ropes (4) are multiple and are respectively positioned on two XZ planes, the reserved gaps (3) are also two, and the centers of the two reserved gaps (3) are respectively positioned in the two XZ planes.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111507827.8A CN114289397B (en) | 2021-12-10 | 2021-12-10 | Acoustic reflection top cover structure for ultrasonic cleaning device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111507827.8A CN114289397B (en) | 2021-12-10 | 2021-12-10 | Acoustic reflection top cover structure for ultrasonic cleaning device |
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| CN114289397A true CN114289397A (en) | 2022-04-08 |
| CN114289397B CN114289397B (en) | 2023-04-25 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001017929A (en) * | 1999-07-07 | 2001-01-23 | Shimada Phys & Chem Ind Co Ltd | Process and device for ultrasonic cleaning |
| CN107899526A (en) * | 2017-11-07 | 2018-04-13 | 中国石油大学(华东) | A kind of sonochemical process device for weakening standing wave effect based on reflecting plate topological structure |
| CN210788422U (en) * | 2019-09-25 | 2020-06-19 | 河南日盛综合检测有限公司 | Ultrasonic cleaner |
| CN211660612U (en) * | 2019-10-30 | 2020-10-13 | 南京工业职业技术学院 | Cleaning device for complex modeling art ceramics |
| CN112605053A (en) * | 2020-12-16 | 2021-04-06 | 鼎泰（湖北）生化科技设备制造有限公司 | Novel ultrasonic cleaning machine |
| CN214767448U (en) * | 2021-07-12 | 2021-11-19 | 苏州泽恒机械设备有限公司 | Ultrasonic cleaning device for medical treatment |
-
2021
- 2021-12-10 CN CN202111507827.8A patent/CN114289397B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001017929A (en) * | 1999-07-07 | 2001-01-23 | Shimada Phys & Chem Ind Co Ltd | Process and device for ultrasonic cleaning |
| CN107899526A (en) * | 2017-11-07 | 2018-04-13 | 中国石油大学(华东) | A kind of sonochemical process device for weakening standing wave effect based on reflecting plate topological structure |
| CN210788422U (en) * | 2019-09-25 | 2020-06-19 | 河南日盛综合检测有限公司 | Ultrasonic cleaner |
| CN211660612U (en) * | 2019-10-30 | 2020-10-13 | 南京工业职业技术学院 | Cleaning device for complex modeling art ceramics |
| CN112605053A (en) * | 2020-12-16 | 2021-04-06 | 鼎泰（湖北）生化科技设备制造有限公司 | Novel ultrasonic cleaning machine |
| CN214767448U (en) * | 2021-07-12 | 2021-11-19 | 苏州泽恒机械设备有限公司 | Ultrasonic cleaning device for medical treatment |
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