Hollow rod type transducer device

Abstract

The utility model provides a hollow rod type transducer device which is arranged in liquid and comprises a transducer body and an ultrasonic rod, and the transducer body is composed of at least one piezoelectric characteristic component. The piezoelectric characteristic part is connected with a power supply device through a cable; at least part of the ultrasonic rod is immersed in liquid, and the ultrasonic rod is provided with a transmitting end; the ultrasonic rod at least comprises a section of rod body, at least one section of the rod body is provided with a cavity structure, the surface of at least part of the cavity structure makes contact with liquid, and ultrasonic waves generated by vibration of the portion, making contact with the liquid, of the cavity structure are spread towards the periphery with the surface, immersed in the liquid, of the ultrasonic rod as the center and gradually decreased. According to the hollow rod type transducer device, the ultrasonic working range can be expanded, the frequency is large, and the ultrasonic effect is good. In addition, design is ingenious, the structure is simple, and cost is low.

Description

Technical Field

[0001] This utility model relates to the field of ultrasonic processing, and in particular to a hollow rod transducer device. Background Technology

[0002] An ultrasonic transducer is a device that converts electrical energy into acoustic energy (i.e., high-frequency mechanical vibration energy). Ultrasonic cleaning achieves a good cleaning effect by generating ultrasonic vibrations in the transducer, which create cavitation effects in water, producing instantaneous high-pressure bubbles that impact the object being cleaned.

[0003] Ultrasonic transducer bodies can be broadly categorized into fixed and movable types. A traditional movable ultrasonic transducer body comprises the transducer body itself and a solid ultrasonic rod connected to it. This solid ultrasonic rod is a variable cross-sectional area solid rod, and its circumferential (radial) vibration is achieved through the angle of the variable cross-section, thus enabling the output of multi-dimensional ultrasonic energy in both the axial and circumferential directions at the rod's end. Because the solid ultrasonic rod is a variable cross-sectional area solid rod, it has a large mass and high vibration inertia. Therefore, traditional movable ultrasonic transducer bodies are generally suitable for applications with lower frequencies (e.g., 15-30 kHz).

[0004] In addition, in terms of structural design, the solid ultrasonic rod needs to be designed separately from the transducer body. However, achieving resonance as a component with the same frequency results in a complex overall structure and high cost. Utility Model Content

[0005] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a hollow rod transducer device to solve the technical problems existing in the prior art.

[0006] To achieve the above and other related objectives, this utility model provides a hollow rod transducer device disposed in a liquid; the transducer device includes: a transducer body composed of at least one piezoelectric feature component and an ultrasonic rod; the piezoelectric feature component is connected to a power supply device via a cable; at least a portion of the ultrasonic rod is immersed in the liquid, and the ultrasonic rod has a transmitting end; the ultrasonic rod includes at least one rod body, at least one section of the rod body has a cavity structure, and at least a portion of the surface of the cavity structure is in contact with the liquid, the ultrasonic waves generated by the vibration of the part of the cavity structure in contact with the liquid propagate outwards from the surface of the ultrasonic rod immersed in the liquid and decrease in intensity.

[0007] Furthermore, the ultrasonic waves generated by the vibration of the part of the cavity structure in contact with the liquid, centered on the surface of the ultrasonic rod immersed in the liquid, have an intensity ≥0.1 W / cm at different locations within a diameter of 300 mm. 2 .

[0008] Furthermore, the ratio of the length of the portion of the cavity structure in contact with the liquid to the length of the entire cavity structure is L, and L≥10%.

[0009] Furthermore, the liquid in contact with the cavity structure is a mixture of liquid and solid with a solid content concentration of less than 80%.

[0010] Furthermore, the ratio of the inner diameter to the outer diameter of the cavity structure ranges from 0.1 to 0.8.

[0011] Furthermore, the cavity structure is a hollow tube closed at both ends.

[0012] Furthermore, the cavity structure is a hollow tube with an opening at at least one end, and the opening is the transmitting end.

[0013] Furthermore, at least a portion of the cavity structure is a non-variable cross-section cavity.

[0014] Furthermore, the frequency range of the transducer device is 15kHz to 200kHz.

[0015] As described above, the hollow rod transducer device of this utility model has the following beneficial effects:

[0016] Because at least a portion of the ultrasonic rod is immersed in the liquid, the ultrasonic rod has a transmitting end; the ultrasonic rod includes at least one rod body, at least one section of which has a cavity structure, and at least a portion of the surface of the cavity structure is in contact with the liquid. When the transducer device is working, the ultrasonic waves generated by the vibration at the part of the cavity structure in contact with the liquid will propagate outwards from the surface of the ultrasonic rod immersed in the liquid and decrease in intensity. Compared with other rod-type ultrasonic devices, the ultrasonic wave covers a larger area and has a higher intensity, thereby expanding the ultrasonic wave's working range, i.e., higher frequency and better ultrasonic effect. In addition, the design is ingenious, the structure is relatively simple, and the cost is low. Attached Figure Description

[0017] Figure 1 The diagram shown is a schematic representation of one embodiment of a hollow rod transducer device according to the present invention.

[0018] Figure 2 The diagram shown is a structural schematic of a hollow rod transducer device according to this utility model.

[0019] Figure 3 Display along Figure 2 Cross-sectional view of AA.

[0020] Component designation explanation

[0021] 1. Transducer body 2. Ultrasonic rod

[0022] 3. Liquid 21 Cavity Structure

[0023] 22 Variable cross-section cavity Detailed Implementation

[0024] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0025] Please see Figures 1 to 3 It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of this invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness or purpose of this invention, should still fall within the scope of the technical content disclosed in this invention. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and are not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0026] This invention provides a hollow rod transducer device, which is immersed in a liquid. During operation, it can propagate vibrations outwards from its center, gradually decreasing in intensity. Compared to other rod-type ultrasonic transducers, this hollow rod transducer device generates ultrasonic waves covering a larger area and with greater intensity, thus expanding the ultrasonic operating range, resulting in higher frequency and better ultrasonic performance. Furthermore, it features an ingenious design, a relatively simple structure, and low cost.

[0027] like Figure 2 As shown, a hollow rod transducer device of this utility model includes: a transducer body 1 composed of at least one piezoelectric feature component and an ultrasonic rod 2; the ultrasonic rod 2 is connected to the transducer body 1. The piezoelectric feature component is connected to a power supply device (not shown in the figure) via a cable; the voltage that the piezoelectric feature component can withstand directly affects the amplitude of the ultrasonic rod 2.

[0028] At least a portion of the ultrasonic rod 2 is immersed in a liquid, preferably a mixture of liquid and solid with a solid content concentration of less than 80%.

[0029] Referring to reference 1, the ultrasonic rod 2 has a transmitting end (not shown in the figure); the ultrasonic rod 2 includes at least one rod body, and at least one section of the rod body has a cavity structure 21. In use, either a portion of the surface of the cavity structure 21 is in contact with the liquid, or the entire surface of the cavity structure 21 is in contact with the liquid. The ultrasonic waves generated by the vibration of the portion of the cavity structure 21 in contact with the liquid propagate outwards from the surface of the ultrasonic rod 2 immersed in the liquid and decrease in intensity, as shown in [reference 1]. Figure 1 .

[0030] In the liquid, the ultrasonic waves generated by the vibration of the part of the cavity structure 21 in contact with the liquid, centered on the surface of the ultrasonic rod 2 immersed in the liquid, have an intensity ≥0.1W / cm at different locations within a diameter of 300mm. 2 The relationship between location and ultrasonic wave intensity (abbreviated as sound intensity) is shown in the table below:

[0031]

[0032] To improve the ultrasonic effect and reduce costs, preferably, the ratio of the length of the portion of the cavity structure 21 in contact with the liquid to the length of the entire cavity structure 21 is L, and L≥10%.

[0033] In this application, in order to ensure the mechanical strength of the hollow structure and to optimize the ultrasonic function, the cavity structure 21 is designed with an inner diameter to outer diameter ratio ranging from 0.1 to 0.8.

[0034] In this application, the cavity structure 21 can be designed as a hollow tube closed at both ends. Alternatively, it can be designed as a hollow tube with an opening at one end, i.e., a hollow tube closed at one end and open at the other. Preferably, the closed end of the hollow tube is closer to the ultrasonic body than the opening; the opening is the transmitting end. Of course, the hollow tube can also be designed as a tube with openings at both ends.

[0035] The cavity structure 21 can be designed as a cavity with a uniform diameter, or as a cavity with a gradually decreasing or increasing diameter; the cavity structure 21 can also be designed with at least a portion being a non-variable cross-section cavity 22, see Figure 3 .

[0036] The cross-section of the cavity structure 21 can be circular or polygonal. This application does not impose specific restrictions on the cross-sectional shape of the cavity structure 21.

[0037] In this application, the frequency range of the transducer device is 15kHz to 200kHz.

[0038] In summary, the hollow rod transducer device of this invention, because at least a portion of the ultrasonic rod 2 is immersed in the liquid, and the ultrasonic rod 2 has a transmitting end; the ultrasonic rod 2 includes at least one rod body, at least one section of which has a cavity structure 21, and at least a portion of the surface of the cavity structure 21 is in contact with the liquid, when the transducer device is working, the ultrasonic waves generated by the vibration of the part of the cavity structure 21 in contact with the liquid will propagate outwards from the surface of the ultrasonic rod 2 immersed in the liquid and decrease in intensity. Compared with other rod-type ultrasonic devices, the ultrasonic wave covers a larger area and has a higher intensity, thereby expanding the ultrasonic wave's working range, i.e., higher frequency and better ultrasonic effect. In addition, the design is ingenious, the structure is relatively simple, and the cost is low. Therefore, this invention effectively overcomes the various shortcomings of the prior art and has high industrial application value.

[0039] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A hollow rod transducer device, disposed in a liquid, characterized in that, The transducer device includes: a transducer body composed of at least one piezoelectric feature component and an ultrasonic rod; the piezoelectric feature component is connected to a power supply device via a cable; at least a portion of the ultrasonic rod is immersed in a liquid, and the ultrasonic rod has a transmitting end; the ultrasonic rod includes at least one rod body, at least one section of the rod body has a cavity structure, and at least a portion of the surface of the cavity structure is in contact with the liquid, and the ultrasonic waves generated by the vibration of the part of the cavity structure in contact with the liquid propagate outwards from the surface of the ultrasonic rod immersed in the liquid and decrease in intensity.

2. The hollow rod transducer device according to claim 1, characterized in that: The ultrasonic waves generated by the vibration of the part of the cavity structure in contact with the liquid, centered on the surface of the ultrasonic rod immersed in the liquid, have an intensity ≥0.1W / cm at different locations within a diameter of 300mm. 2 .

3. The hollow rod transducer device according to claim 1, characterized in that: The ratio of the length of the portion of the cavity structure in contact with the liquid to the length of the entire cavity structure is L, and L≥10%.

4. The hollow rod transducer device according to claim 1, characterized in that: The liquid in contact with the cavity structure is a mixture of liquid and solid with a solid content concentration of less than 80%.

5. The hollow rod transducer device according to claim 1, characterized in that: The ratio of the inner diameter to the outer diameter of the cavity structure is in the range of 0.1 to 0.

8.

6. The hollow rod transducer device according to claim 1, characterized in that: The cavity structure is a hollow tube closed at both ends.

7. The hollow rod transducer device according to claim 1, characterized in that: The cavity structure is a hollow tube with an opening at at least one end, and the opening is the transmitting end.

8. The hollow rod transducer device according to claim 1, characterized in that: At least a portion of the cavity structure is a non-variable cross-section cavity.

9. The hollow rod transducer device according to claim 1, characterized in that: The frequency range of the transducer device is 15kHz to 200kHz.

Images