阅读说明：本技术 贴片式自供电的全方位超声波辐射除藻装置及其工作方法 (Surface-mounted self-powered omnibearing ultrasonic radiation algae removal device and working method thereof ) 是由 王亮 王健安 周楚新 赵淳生 于 2019-10-12 设计创作，主要内容包括：本发明公开了一种贴片式自供电的全方位超声波辐射除藻装置及其工作方法,包括一个供电驱动控制模块、承载装置、连接装置、超声探头模块和水质检测装置；所述供电驱动控制模块由光伏发电系统、驱动控制系统、储电装置和金属外壳组成；所述超声探头模块包含四个贴片式超声探头、环形构件和箱体；所述环形构件与四个超声探头采用一体化设计。通过太阳能日间发电输入到驱动控制系统和储电装置,实现本发明装置全方位的超声除藻功能。本发明装置基于可循环能源,具有绿色除藻、无污染、辐射范围广、除藻效果好等优点。(The invention discloses a patch type self-powered omnibearing ultrasonic radiation algae removal device and a working method thereof, and the device comprises a power supply drive control module, a bearing device, a connecting device, an ultrasonic probe module and a water quality detection device; the power supply drive control module consists of a photovoltaic power generation system, a drive control system, an electricity storage device and a metal shell; the ultrasonic probe module comprises four patch type ultrasonic probes, an annular component and a box body; the annular member and the four ultrasonic probes are designed in an integrated mode. Solar daytime power generation is input into the drive control system and the power storage device, so that the omnibearing ultrasonic algae removal function of the device is realized. The device provided by the invention is based on recyclable energy, and has the advantages of green algae removal, no pollution, wide radiation range, good algae removal effect and the like.)

1. The utility model provides a SMD self-powered all-round ultrasonic radiation removes algae device which characterized in that includes: the device comprises a power supply drive control module (1), a bearing device (2), a connecting device (3), an ultrasonic probe module (4) and a water quality detection device (5);

the power supply drive control module (1) includes: the device comprises a photovoltaic power generation system (11), an electricity storage device (12), an ultrasonic generator (13) and a metal shell (14);

the photovoltaic power generation system (11) is arranged on the upper surface of the metal shell (14) and used for absorbing solar energy, converting the solar energy into electric energy and inputting the electric energy into the electricity storage device (12);

the power storage device (12) supplies power to the ultrasonic generator (13), and the ultrasonic generator (13) realizes the drive control of the ultrasonic probe module (4); the electricity storage device (12) and the ultrasonic generator (13) are arranged inside the metal shell (14);

the bearing device (2) is arranged at the bottom of the power supply drive control module (1) and provides buoyancy;

the connecting device (3) is arranged between the bearing device (2) and the ultrasonic probe module (4) and provides buoyancy for the ultrasonic probe module (4);

the ultrasonic probe module (4) comprises four patch type ultrasonic probes (41), an annular component (42) and a box body (46), the four patch type ultrasonic probes (41) and the annular component (42) are integrally processed and placed in the box body (46), and an ultrasonic coupling agent (47) is filled in the ultrasonic probe module (4);

the patch type ultrasonic probe (41) comprises a positioning beam (43), a metal elastic body (44) and a rectangular piezoelectric ceramic piece (45);

the positioning beam (43) is arranged at the vibration node plane of the metal elastic body (44) and used for fixing the relative position of the patch type ultrasonic probe (41);

the metal elastic body (44) is used for adjusting the emission frequency of the patch type ultrasonic probe (41);

the rectangular piezoelectric ceramic plate (45) is fixed on the side wall of the metal elastic body (44);

the water quality detection device (5) is arranged at the bottom of the ultrasonic probe module (4).

2. The patch type self-powered omni-directional ultrasonic wave radiation algae removal device according to claim 1, wherein the power and working frequency emitted by the ultrasonic probe module (4) are respectively related to the algae removal range to be covered and the corresponding algae removal category.

3. The patch type self-powered omni-directional ultrasonic wave radiation algae removal device according to claim 1, wherein four patch type ultrasonic probes (41) form four reinforced radiation areas in the direction of the emitting surface, meanwhile, the annular member (42) forms a weak radiation area in the circumferential direction, and the whole algae removal device is controlled to float upwards and submerge downwards by matching with the bearing device (2), so that omni-directional 360-degree ultrasonic wave algae removal is realized.

4. The patch type self-powered omni-directional ultrasonic wave radiation algae removal device according to claim 1, wherein the surface of the rectangular piezoelectric ceramic sheet (45) is coated with epoxy resin for insulation treatment.

5. The patch type self-powered omni-directional ultrasonic radiation algae removal device according to claim 1, wherein the water quality detection device (5) monitors the chlorophyll-a, phycocyanin content and pH value in water in real time and feeds the result back to the ultrasonic generator (13), and the ultrasonic generator (13) adjusts the algae removal frequency and output power in real time to achieve efficient algae removal.

6. The patch type self-powered omni-directional ultrasonic wave radiation algae removal device according to claim 1, wherein the carrying device (2) is arranged at the bottom of the power supply driving control module (1) in an integrated design.

7. A working method of a patch type self-powered omnibearing ultrasonic radiation algae removal device is based on the device of any one of claims 1 to 6, and is characterized by comprising the following steps:

single standing wave radiation: the rectangular piezoelectric ceramic plate receives an electric signal to excite the metal elastic body to generate a 2m +1 order longitudinal vibration mode and transmits ultrasonic waves along the direction of longitudinal vibration waves to inhibit the growth of algae, wherein m is more than or equal to 0 and is an integer; meanwhile, the four patch type ultrasonic probes are excited to generate longitudinal vibration to excite a bending vibration mode with n wave crests and wave troughs which are presented together on the annular member, ultrasonic waves are radiated along the radial direction of the annular member for 360 degrees to inhibit the growth of algae, n is more than or equal to 4, and the four patch type ultrasonic probes are simultaneously positioned at the wave crests or the wave troughs of the annular member.

8. A working method of a patch type self-powered omnibearing ultrasonic radiation algae removal device is based on the device of any one of claims 1 to 6, and is characterized by comprising the following steps:

standing wave and traveling wave cooperative radiation: dividing four patch type ultrasonic probes into two groups by taking two non-adjacent patch type ultrasonic probes as a group, respectively applying two phases of electric signals with 90-degree phase difference, exciting the two groups of patch type ultrasonic probes to generate a 2m + 1-order longitudinal vibration mode with 90-degree time phase difference, and transmitting ultrasonic waves along the longitudinal vibration wave direction, wherein m is more than or equal to 0 and is an integer; the annular component is enabled to present two same-row n-order in-plane bending vibration modes in the circumferential direction, wherein n is more than or equal to 2, when the contact position of the first group of patch type ultrasonic probes and the annular component is located at the wave crest or the wave trough state of the bending vibration modes in the upper surface of the annular component, the contact position of the other group of patch type ultrasonic probes and the annular component is located at the node position of the bending vibration modes in the upper surface of the annular component, and the two same-shape n-order in-plane bending vibration modes on the annular component have a phase difference of pi/2 in space; the excitation frequencies of longitudinal vibration generated by the four patch type ultrasonic probes are ensured to be consistent, two phases of the longitudinal vibration have pi/2 phase difference in space and time, and the same n-order in-plane bending vibration modes are coupled to form n-order bending traveling waves advancing along the circumferential direction on the annular member, so that the ultrasonic waves are radiated along the radial direction of the annular member for 360 degrees to inhibit the growth of algae.

Technical Field

The invention belongs to the technical field of ecological algae removal, and particularly relates to a patch type self-powered omnibearing ultrasonic radiation algae removal device and a working method thereof.

Background

The water eutrophication phenomenon causes that aquatic plants and phytoplankton in slow-flow water bodies such as lakes, ponds, reservoirs and the like are rapidly propagated by using nutrient substances in water, so that the dissolved oxygen content in the water is reduced, the water quality is deteriorated, the oxygen content in the water is reduced, and aquatic organisms and even other organisms die, thereby affecting the water ecological system. The pollution-free method is adopted to inhibit the eutrophication of the water body, and has important significance for treating the water body pollution. At present, a plurality of international institutions or biological laboratories have proved through relevant experiments that the growth and propagation of algae in water bodies can be inhibited by using an ultrasonic technology, so that the water bloom phenomenon is changed, and the water bodies are cleaned and decontaminated. Some foreign enterprises have developed ultrasonic equipment for controlling growth and reproduction of algae and have been commercialized. For large-area lakes or reservoirs, a plurality of ultrasonic generators are required to inhibit the growth of blue-green algae on the whole water surface. Therefore, if a self-powered ultrasonic generating device can be realized, the device has important significance for inhibiting algae in the water body for a long time. The Dutch LG Sonic company develops an ultrasonic algae removal device which can cover the range of 500 meters in diameter and is based on solar power supply, the ultrasonic algae removal device comprises three ultrasonic probes to realize sound field radiation in a water area, each transducer needs to bear a 120-degree ultrasonic radiation task, and certain dead angles exist in the traditional ultrasonic probes inevitably, and sound waves cannot be radiated in all directions to perform algae removal operation. In addition to the nonlinear and attenuation characteristics of ultrasonic wave propagation in water, the theoretical radiation angle of ultrasonic waves in the water area is seriously attenuated along with the expansion of the water body range.

In order to realize omnibearing large-area algae removal and prevent the device from being too complex, the invention provides a self-powered scheme of solar power generation and electricity storage to supply power to a probe which radiates ultrasonic waves in 360 degrees in an omnibearing way, realize omnibearing and all-weather efficient ultrasonic algae removal, and avoid the problems that the algae removal is incomplete due to radiation dead angles in the algae removal operation and the ultrasonic algae removal effect is influenced by the occurrence of power failure or no-power supply at night.

Disclosure of Invention

Aiming at the defects of the prior art, the invention aims to provide a patch type self-powered omnibearing ultrasonic wave radiation algae removal device and a working method thereof, aiming at solving the problems that the traditional ultrasonic algae removal device in the prior art is single in radiation direction and dead angles exist in a radiation range.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

the invention relates to a patch type self-powered omnibearing ultrasonic radiation algae removal device, which comprises: the device comprises a power supply drive control module, a bearing device, a connecting device, an ultrasonic probe module and a water quality detection device;

the power supply drive control module includes: the photovoltaic power generation system comprises a photovoltaic power generation system, a power storage device, an ultrasonic generator and a metal shell;

the photovoltaic power generation system is arranged on the upper surface of the metal shell and used for absorbing solar energy, converting the solar energy into electric energy and inputting the electric energy into the electricity storage device;

the power storage device supplies power to the ultrasonic generator, and the ultrasonic generator realizes the drive control of the ultrasonic probe module; the electricity storage device and the ultrasonic generator are arranged inside the metal shell;

the bearing device is arranged at the bottom of the power supply drive control module in an integrated design and provides buoyancy;

the connecting device is arranged between the bearing device and the ultrasonic probe module and provides buoyancy for the ultrasonic probe module;

the ultrasonic probe module comprises four surface-mounted ultrasonic probes, an annular component and a box body which are integrally designed, the four surface-mounted ultrasonic probes and the annular component are integrally processed and placed in the box body, and an ultrasonic coupling agent is filled in the ultrasonic probe module to reduce the attenuation of ultrasonic waves;

the patch type ultrasonic probe comprises a positioning beam, a metal elastic body and a rectangular piezoelectric ceramic piece;

the positioning beam is arranged on the plane of the vibration node of the metal elastic body and used for fixing the relative position of the patch type ultrasonic probe;

one end of the metal elastic body is designed into a horn-shaped cross section amplification structure and is provided with an inner cavity, and the metal elastic body is used for adjusting the emission frequency of the patch type ultrasonic probe;

the rectangular piezoelectric ceramic piece is fixed on the side wall of the metal elastic body, is a longitudinal vibration piezoelectric ceramic piece and is polarized along the thickness direction;

the water quality detection device is arranged at the bottom of the ultrasonic probe module.

Preferably, the power emitted by the ultrasonic probe module and the working frequency are respectively related to the algae removal range to be covered and the corresponding algae removal category.

Preferably, four enhanced radiation areas are formed in the directions of the emitting surfaces of the four patch type ultrasonic probes, meanwhile, the annular member circumferentially forms a weak radiation area, the whole algae removal device is controlled to float upwards and submerge downwards by matching with the bearing device, and omnibearing 360-degree ultrasonic algae removal is achieved.

Preferably, the surface of the rectangular piezoelectric ceramic piece is coated with epoxy resin for insulation treatment.

Preferably, the water quality detection device monitors parameters such as chlorophyll-a, phycocyanin content and pH value in water in real time and feeds results back to the ultrasonic generator, and the ultrasonic generator adjusts the algae removal frequency and output power in real time according to the results to achieve efficient algae removal.

In the device, a photovoltaic power generation system receives solar radiation and converts solar energy into electric energy to be stored in an electricity storage device; the electricity storage device supplies electric energy to the ultrasonic generator, the ultrasonic probe module and the water quality detection device; the water quality detection device monitors parameters such as chlorophyll-a, phycocyanin content and pH value in water in real time and feeds the results back to the ultrasonic generator, and the ultrasonic generator adjusts the algae removal frequency and the output power in real time to change the working frequency of the ultrasonic probe; the bearing device is fixedly connected with the solar drive integrated module, the ultrasonic probe module and the water quality detection device through the connecting device, and the buoyancy is changed so as to change the relative position of the whole algae removal device on the water surface.

According to the invention, the photovoltaic power generation system generates power by depending on solar energy in the daytime and stores the power to the power storage device to realize all-weather power supply for the ultrasonic probe module and the water quality detection device.

The invention relates to a working method of a patch type self-powered omnibearing ultrasonic radiation algae removal device, which is based on the device and comprises the following steps:

single standing wave radiation: the rectangular piezoelectric ceramic plate receives an electric signal to excite the metal elastic body to generate a 2m +1 order longitudinal vibration mode and transmits ultrasonic waves along the direction of longitudinal vibration waves to inhibit the growth of algae, wherein m is more than or equal to 0 and is an integer; meanwhile, the four patch type ultrasonic probes are excited to generate longitudinal vibration to excite a bending vibration mode with n wave crests and wave troughs which are presented together on the annular member, ultrasonic waves are radiated along the radial direction of the annular member for 360 degrees to inhibit the growth of algae, n is more than or equal to 4, and the four patch type ultrasonic probes are simultaneously positioned at the wave crests or the wave troughs of the annular member.

The invention relates to a working method of a patch type self-powered omnibearing ultrasonic radiation algae removal device, which is based on the device and comprises the following steps:

standing wave and traveling wave cooperative radiation: dividing four patch type ultrasonic probes into two groups by taking two non-adjacent patch type ultrasonic probes as a group, respectively applying two phases of electric signals with 90-degree phase difference, exciting the two groups of patch type ultrasonic probes to generate a 2m + 1-order longitudinal vibration mode with 90-degree time phase difference, and transmitting ultrasonic waves along the longitudinal vibration wave direction, wherein m is more than or equal to 0 and is an integer; the annular component is enabled to present two same-row n-order in-plane bending vibration modes in the circumferential direction, wherein n is more than or equal to 2, when the contact position of the first group of patch type ultrasonic probes and the annular component is located at the wave crest or the wave trough state of the bending vibration modes in the upper surface of the annular component, the contact position of the other group of patch type ultrasonic probes and the annular component is located at the node position of the bending vibration modes in the upper surface of the annular component, and the two same-shape n-order in-plane bending vibration modes on the annular component have a phase difference of pi/2 in space; the excitation frequencies of longitudinal vibration generated by the four patch type ultrasonic probes are ensured to be consistent, and two homomorphic n-order in-plane bending vibration modes with pi/2 phase difference in space and time are coupled to form n-order bending traveling waves advancing along the circumferential direction on the annular component, so that the ultrasonic waves are radiated along the radial direction of the annular component for 360 degrees to inhibit the growth of algae.

The invention has the beneficial effects that:

the algae removal device provided by the invention is divided into two working modes through the cooperation of longitudinal vibration and in-plane bending vibration, and a working mode I of generating single standing wave radiation and a working mode II of generating standing wave and annular traveling wave cooperative radiation through two different power-up modes; the first working mode adopts single-phase electric drive to realize omnibearing ultrasonic radiation algae removal, and most working conditions are met; and the second working mode adopts a two-phase electric driving mode, and the circumferential movement of the bending vibration mode on the annular member is realized by utilizing the traveling wave characteristic, so that the algae removal and water purification functions with higher requirements are realized.

The coverage range of ultrasonic radiation generated by the ultrasonic probe is controlled, so that the growth and the propagation of blue algae can be effectively inhibited, and the energy consumption is reduced; in addition, the energy storage device is utilized, the pollution-free solar energy is fully utilized to realize all-weather power generation to supply power to the ultrasonic probe, and the electric energy converted by the solar energy is effectively utilized to realize all-weather power supply while the electric energy waste in daytime is avoided.

The algae removal device has the advantages of simple structure, environmental protection, good algae removal effect, convenience in mounting and dismounting, good controllability and the like.

Drawings

FIG. 1 is a schematic view of the structure of the apparatus of the present invention.

Fig. 2 is a schematic structural diagram of the power supply drive control module.

Fig. 3 is a half-section schematic diagram of the power supply drive control module.

Fig. 4 is a schematic structural diagram of the carrying device.

Fig. 5 is a schematic structural diagram of an ultrasound probe module.

Fig. 6 is a cross-sectional view of the ultrasound probe module along the Z-axis.

FIG. 7a is a schematic structural diagram of an ultrasonic probe;

fig. 7b is a schematic view of the polarization direction of the rectangular piezoelectric ceramic plate.

Fig. 8 is a schematic view of the vibration mode of the ring member at the time of longitudinal vibration of the ultrasonic probe.

FIG. 9 is a schematic diagram of two homomorphic fourth-order in-plane bending vibrations coupled into a traveling wave on a ring-shaped member.

FIG. 10 is a schematic view of ultrasonic radiation during operation of the algae removal apparatus.

The system comprises a power supply driving control module, a power supply driving control module and a power supply driving control module, wherein the power supply driving control module is used for controlling the power supply driving control module; 11. a photovoltaic power generation system; 12. an electricity storage device; 13. an ultrasonic generator; 14. a metal housing; 2. a carrying device; 3. a connecting device; 4. an ultrasonic probe module; 41: a patch type ultrasonic probe; 42. an annular member; 43. positioning the beam; 44. a metal elastomer; 45: a rectangular piezoelectric ceramic piece; 46. a box body; 47. an ultrasonic coupling agent; 5. a water quality detection device; 6. a longitudinal vibration mode on the ultrasonic probe when the sin signal is excited; 7. longitudinal vibration mode on the ultrasonic probe when cos signal excitation; 8. a corresponding in-plane bending vibration mode on the annular member when the sin signal is excited; 9. and when the cos signal is excited, the corresponding in-plane bending vibration mode on the annular component is formed.

Detailed Description

In order to facilitate understanding of those skilled in the art, the present invention will be further described with reference to the following examples and drawings, which are not intended to limit the present invention.

Referring to fig. 1 to 10, a patch type self-powered omni-directional ultrasonic radiation algae removal device according to the present invention includes: the device comprises a power supply drive control module 1, a bearing device 2, a connecting device 3, an ultrasonic probe module 4 and a water quality detection device 5;

the power supply drive control module 1 includes: a photovoltaic power generation system 11, an electricity storage device 12, an ultrasonic generator 13 and a metal shell 14, as shown in fig. 3;

as shown in fig. 2, the photovoltaic power generation system 11 is disposed on the upper surface of the metal casing 14, and is used for absorbing solar energy, converting the solar energy into electric energy and inputting the electric energy to the electric energy storage device 12;

the electricity storage device 12 supplies electricity to the ultrasonic generator 13, and the ultrasonic generator 13 realizes the drive control of the ultrasonic probe module 4; the electricity storage device 12 and the ultrasonic generator 13 are arranged inside the metal shell 14;

the bearing device 2 is arranged at the bottom of the power supply drive control module 1 and provides buoyancy; referring to fig. 4, the carrying device 2 realizes floating and sinking of the algae removal device by adjusting the buoyancy;

the connecting device 3 is arranged between the bearing device 2 and the ultrasonic probe module 4 and provides buoyancy for the ultrasonic probe module 4;

referring to fig. 5 and 6, the ultrasonic probe module 4 comprises four integrated design based on d₃₁The ultrasonic probe module 4 comprises an effect patch type ultrasonic probe 41, an annular component 42 and a box body 46, wherein the four patch type ultrasonic probes 41 and the annular component 42 are integrally processed and placed in the box body 46, and an ultrasonic coupling agent 47 is filled in the ultrasonic probe module 4 to reduce the attenuation of ultrasonic waves;

the patch type ultrasonic probe 41 comprises a positioning beam 43, a metal elastic body 44 and a rectangular piezoelectric ceramic piece 45;

the positioning beam 43 is arranged at the vibration node plane of the metal elastic body 44 to fix the relative position of the patch type ultrasonic probe 41;

one end of the metal elastic body 44 is designed to be a horn-shaped cross section amplification structure and has an inner cavity, and is used for adjusting the emission frequency of the patch type ultrasonic probe 41;

the rectangular piezoelectric ceramic pieces 45 are longitudinal vibration piezoelectric ceramic pieces and are polarized along the thickness direction; the polarization directions of the two rectangular piezoelectric ceramic pieces 45 on the patch type ultrasonic probe 41 are opposite; the rectangular piezoelectric ceramic plate 45 is fixed to the side wall of the metal elastic body 44.

Wherein, the power and working frequency transmitted by the ultrasonic probe module 4 are respectively related to the algae removal range to be covered and the corresponding algae removal category.

The directions of the emitting surfaces of the four patch type ultrasonic probes 41 form four reinforced radiation areas, meanwhile, the annular member 42 circumferentially forms a weak radiation area, and the whole algae removal device is controlled to float upwards and submerge by matching with the bearing device 2, so that the all-dimensional 360-degree ultrasonic algae removal is realized.

Wherein, the surface of the rectangular piezoelectric ceramic sheet 45 is coated with epoxy resin for insulation treatment.

Wherein the apparatus further comprises: the water quality detection device 5 is positioned at the bottom of the ultrasonic probe module 4, monitors parameters such as chlorophyll-a, phycocyanin content and PH value in water in real time, feeds back results to the ultrasonic generator 13, and the ultrasonic generator 13 adjusts the algae removal frequency and output power in real time according to the results to realize efficient algae removal.

The invention discloses two working methods of a patch type self-powered omnibearing ultrasonic radiation algae removal device, which take first-order longitudinal vibration and fourth-order bending vibration as examples for explanation:

referring to fig. 8, a first mode of operation, single standing wave radiation: simultaneously exciting the four ultrasonic probes to generate first-order longitudinal vibration to excite a bending vibration mode with four wave crests and wave troughs on the annular member, so that the radial 360-degree radiation ultrasonic wave of the annular member inhibits the growth of algae.

As shown in fig. 9, in the second operation mode, the standing wave and the traveling wave are radiated in cooperation: dividing four ultrasonic probes into two groups by taking two non-adjacent ultrasonic probes as a group, respectively applying two phases of electric signals with 90-degree phase difference, and exciting the two groups of ultrasonic probes to generate a first-order longitudinal vibration mode with 90-degree time phase difference to emit ultrasonic waves along the longitudinal vibration wave direction; the annular member is enabled to present two same-row 4-order in-plane bending vibration modes around the circumferential direction, wherein when the contact position of the first group of ultrasonic probes and the annular member is located at the wave crest or the wave trough of the bending vibration mode in the upper surface of the annular member, the contact position of the other group of ultrasonic probes and the annular member is located at the node position of the bending vibration mode in the upper surface of the annular member; therefore, two homomorphic four-order in-plane bending vibration modes on the annular member have a phase difference of pi/2 in space; the excitation frequencies of longitudinal vibration generated by the four ultrasonic probes are consistent, two phases of homomorphic four-order in-plane bending vibration modes with pi/2 phase difference in space and time are coupled to form a four-order bending traveling wave advancing along the circumferential direction on the annular member, and therefore the ultrasonic waves are radiated along the radial direction of the annular member for 360 degrees to inhibit the growth of algae.

Referring to fig. 10, since the radiation distance of the longitudinal vibration wave is greater than that of the flexural vibration wave, the radiation directions of the four longitudinal vibration waves are called strong radiation regions, and the other directions on the annular member are called weak radiation regions, and the two working regions work together to realize omnidirectional high-efficiency algae removal.

The patch type self-powered omnibearing ultrasonic radiation algae removal device can control an annular water area with the radius of the ultrasonic radiation distance emitted by the single ultrasonic probe, and assists in achieving omnibearing inhibition of blue algae growth and reproduction in a real sense by ultrasonic radiation of an annular component, thereby achieving an efficient and clean algae removal function.

By controlling the buoyancy of the bearing device, the ultrasonic probe can float up and down under the water surface, can realize ultrasonic coverage on a water area with a certain depth, and has a better algae removal effect.

While the invention has been described in terms of its preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.