High-power ultrasonic transducer device

Abstract

The utility model discloses a high-power ultrasonic transducer device, which comprises a front end assembly, a shell, a piezoelectric ceramic assembly and a rear end assembly, one end of the shell is connected with the front-end assembly, the other end of the shell is connected with the rear-end assembly, the piezoelectric ceramic assembly is arranged in the shell, and one end of the piezoelectric ceramic assembly is connected with the front-end assembly; a communicated cooling gas channel is formed among the front end assembly, the shell and the piezoelectric ceramic assembly, so that the interior and the exterior of the piezoelectric ceramic assembly are cooled; the piezoelectric ceramic assembly comprises a first piezoelectric ceramic element, a second piezoelectric ceramic element, a first screw rod, a second screw rod, a connecting part and a rear cover plate assembly; the power of the ultrasonic transducer is improved by arranging the first piezoelectric ceramic element and the second piezoelectric ceramic element, the connecting part is arranged to fixedly connect the first piezoelectric ceramic element and the second piezoelectric ceramic element, installation difficulty is avoided, and meanwhile the cooling gas channel is arranged to cool the interior and the exterior of the piezoelectric ceramic assembly, so that the power of the ultrasonic transducer is improved. The problem that a high-power ultrasonic transducer is difficult to dissipate heat is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of ultrasonic transducer devices, in particular to a high-power ultrasonic transducer device. Background Art

[0002] Traditional ultrasonic transducers usually work with a single piezoelectric ceramic, resulting in the power being limited by the power of the piezoelectric ceramic itself. Therefore, the power of the ultrasonic transducer can be increased by increasing the number of piezoelectric ceramics or using larger piezoelectric ceramics, but increasing the number of piezoelectric ceramics may lead to unstable installation. At the same time, the heat dissipation of high-power ultrasonic transducers is large, and the piezoelectric ceramics may be depolarized and unable to work normally, or even damaged. Utility Model Content

[0003] The utility model provides a high-power ultrasonic transducer device to overcome the technical problems of unstable installation and difficult heat dissipation of the high-power ultrasonic transducer due to the increase in the number of piezoelectric ceramic sheets.

[0004] In order to achieve the above purpose, the technical solution of the utility model is:

[0005] A high-power ultrasonic transducer device comprises a front-end component, a housing, a piezoelectric ceramic component and a rear-end component; one end of the housing is connected to the front-end component, and the other end is connected to the rear-end component, the piezoelectric ceramic component is arranged inside the housing, and one end is connected to the front-end component; a cooling gas channel is formed between the front-end component, the housing and the piezoelectric ceramic component, so as to cool the inside and outside of the piezoelectric ceramic component; the piezoelectric ceramic component comprises a first piezoelectric ceramic element, a second piezoelectric ceramic element, a first screw, a second screw, a connecting component and a rear cover plate component; one end of the first screw is connected to the front-end component, and the other end is connected to one end of the connecting component, so as to fix the first piezoelectric ceramic element sleeved on the outer wall of the first screw; one end of the second screw is connected to the other end of the connecting component, and the other end of the second screw is connected to the rear cover plate component, so as to fix the second piezoelectric ceramic element sleeved on the outer wall of the second screw.

[0006] Furthermore, the connecting component includes an intermediate cover plate and an intermediate block, and the intermediate cover plate is arranged between the first piezoelectric ceramic element and the intermediate block; the intermediate cover plate is a circular ring structure, and the intermediate block is a hollow cylindrical structure and is provided with a first internal thread and a second internal thread, and the intermediate block is connected to one end of the first screw rod through the first internal thread, and is connected to one end of the second screw rod through the second internal thread.

[0007] Furthermore, a rear cover plate and a nut; the rear cover plate is arranged between the second piezoelectric ceramic element and the nut, and the other end of the second screw rod is connected to the nut through a thread.

[0008] Further, the cooling gas channel includes a first air inlet channel, a second air inlet channel, a first air outlet channel and a second air outlet channel; wherein, the front end component is provided with the first air inlet channel and the first air outlet channel, the interior of the piezoelectric ceramic component is provided with the second air inlet channel, and the second air outlet channel is formed between the outside of the piezoelectric ceramic component and the inner wall of the shell; the cooling gas can enter the second air inlet channel from the first air inlet channel to cool the inside of the piezoelectric ceramic component, and then enter the second air outlet channel from the second air inlet channel to cool the outside of the piezoelectric ceramic component, and finally the cooling gas enters the first air outlet channel from the second air outlet channel and is discharged.

[0009] Furthermore, the front end component includes a front cover part, a first fixed seat, a second fixed seat, an air inlet connector and an air outlet connector; the air inlet connector and the air outlet connector are arranged opposite to the end surface of the first fixed seat away from the piezoelectric ceramic component, and the end surface close to the piezoelectric ceramic component is connected to the second fixed seat, and the first fixed seat and the second fixed seat are both provided with a accommodating cavity for accommodating the front cover part, and the front cover part is installed in the accommodating cavity and connected to the piezoelectric ceramic component; the first air inlet channel includes a first internal channel arranged in the air inlet connector, a first annular channel arranged between the first fixed seat and the second fixed seat, and a second internal channel arranged in the front cover part, which are connected in sequence.

[0010] Further, the front cover part includes a mounting post and an annular plate, and the annular plate is sleeved on one end of the mounting post close to the piezoelectric ceramic component, the side wall of the annular plate is evenly provided with a plurality of first through holes in the radial direction, the side wall of the mounting post is provided with a plurality of second through holes in the radial direction corresponding to the first through holes, and the annular plate and the mounting post form the second internal channel correspondingly;

[0011] One end of the mounting column is provided with a first accommodating cavity and a second accommodating cavity which are connected in sequence along a direction close to the piezoelectric ceramic component. The first accommodating cavity is provided with an internal thread. One end of the first screw is located in the first accommodating cavity and the second accommodating cavity, and is connected to the front cover part through the internal thread of the first accommodating cavity. At the same time, an annular gap is formed between the first screw and the second accommodating cavity.

[0012] Beneficial effects: The utility model increases the power of the ultrasonic transducer by providing a first piezoelectric ceramic element and a second piezoelectric ceramic element, and provides a connecting component to fix the first piezoelectric ceramic element and the second piezoelectric ceramic element respectively to avoid installation difficulties, and at the same time provides a cooling gas channel to cool the inside and outside of the piezoelectric ceramic component, thereby solving the problem of heat dissipation difficulties of high-power ultrasonic transducers. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0014] Figure 1 This is a schematic structural diagram of a high-power ultrasonic transducer device of the utility model;

[0015] Figure 2 The utility model is a high-power ultrasonic transducer device. Figure 1 The first cross-sectional view at AA;

[0016] Figure 3 The utility model is a high-power ultrasonic transducer device. Figure 1 The second cross-sectional view at AA;

[0017] Figure 4 The utility model is a schematic diagram of the connection between a high-power ultrasonic transducer device and an explosion-proof control component.

[0018] In the figure:

[0019] 1. Front end assembly; 11. Front cover; 12. First fixing seat; 13. Second fixing seat; 14. Air inlet connector; 15. Air outlet connector;

[0020] 2. Shell;

[0021] 3. piezoelectric ceramic assembly; 31. first piezoelectric ceramic element; 32. second piezoelectric ceramic element; 321. aluminum pad; 33. first screw; 34. second screw; 35. connecting component; 351. middle cover plate; 352. middle block; 36. rear cover plate assembly; 361. rear cover plate; 362. nut;

[0022] 4. Rear end assembly; 41. Rear end cover; 42. Pressure measuring joint; 421. Pressure detection channel; 43. Power supply and temperature measuring joint;

[0023] 51, first air inlet channel; 511, first internal channel; 512, first annular channel; 513, second internal channel; 52, second air inlet channel; 521, second annular channel; 522, third annular channel; 523, first annular through hole; 524, fourth annular channel; 525, fifth annular channel; 526, second annular through hole; 53, first air outlet channel; 531, third air outlet channel; 532, annular air outlet channel; 533, third internal channel; 54, second air outlet channel;

[0024] 6. Explosion-proof control component; 61. Air filter; 62. Pressure gauge; 63. Pressure regulating valve; 64. First explosion-proof solenoid valve; 65. Inlet flow meter; 66. Outlet flow meter; 67. Second explosion-proof solenoid valve; 68. Muffler; 69. Explosion-proof sound and light alarm; 70. Pressure detection control module; 71. Micro pressure difference sensor; 72. Temperature detection control module; 73. Positive pressure cabinet. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] This embodiment provides a high-power ultrasonic transducer device, such as Figures 1 to 3 As shown, it includes a front-end component 1, a housing 2, a piezoelectric ceramic component 3 and a rear-end component 4; one end of the housing 2 is connected to the front-end component 1, and the other end is connected to the rear-end component 4, the piezoelectric ceramic component 3 is arranged inside the housing 2, and one end is connected to the front-end component 1; a cooling gas channel is formed between the front-end component 1, the housing 2 and the piezoelectric ceramic component 3, so as to cool the inside and outside of the piezoelectric ceramic component 3;

[0027] Specifically, the piezoelectric ceramic component 3 includes a first piezoelectric ceramic element 31, a second piezoelectric ceramic element 32, a first screw 33, a second screw 34, a connecting part 35 and a rear cover plate assembly 36; one end of the first screw 33 is connected to the front end assembly 1, and the other end is connected to one end of the connecting part 35, so as to fix the first piezoelectric ceramic element 31 sleeved on the outer wall of the first screw 33; one end of the second screw 34 is connected to the other end of the connecting part 35, and the other end of the second screw 34 is connected to the rear cover plate assembly 36, so as to fix the second piezoelectric ceramic element 32 sleeved on the outer wall of the second screw 34.

[0028] Specifically, in this embodiment, Figure 2 and Figure 3 As shown, the first piezoelectric ceramic element 31 includes a plurality of piezoelectric ceramic sheets and a plurality of electrode sheets, each piezoelectric ceramic sheet and the electrode sheet are adjacent in sequence, the second piezoelectric ceramic element includes a plurality of piezoelectric ceramic sheets, a plurality of electrode sheets and an aluminum pad 321, the aluminum pad is arranged between a piezoelectric ceramic sheet and an electrode sheet, and the side wall of the aluminum pad is provided with a groove for installing a temperature sensor, and the temperature sensor is arranged in the groove. In this embodiment, preferably, the first piezoelectric ceramic element and the second piezoelectric ceramic element respectively include 4 piezoelectric ceramic sheets and 4 electrode sheets, wherein the aluminum pad is arranged in the middle position of the second piezoelectric ceramic component, and the temperature of the ultrasonic transducer can be detected by the temperature sensor and transmitted to the explosion-proof control component 6, thereby controlling the entry of the cooling gas and ensuring the stable operation of the ultrasonic transducer. In this embodiment, by setting multiple groups of piezoelectric ceramic elements, the number of piezoelectric ceramics is increased, and the size of the piezoelectric ceramics is increased, thereby increasing the power of the ultrasonic transducer.

[0029] In a specific embodiment, the cooling gas channel includes a first air inlet channel 51, a second air inlet channel 52, a first air outlet channel 53, and a second air outlet channel 54;

[0030] The front-end component 1 is provided with the first air inlet channel 51 and the first air outlet channel 53, the piezoelectric ceramic component 3 is provided with the second air inlet channel 52, and the second air outlet channel 54 is formed between the outside of the piezoelectric ceramic component 3 and the inner wall of the housing 2; the cooling gas can enter the second air inlet channel 52 from the first air inlet channel 51 to cool the inside of the piezoelectric ceramic component 3, and then enter the second air outlet channel 54 from the second air inlet channel 51 to cool the outside of the piezoelectric ceramic component 3, and finally the cooling gas enters the first air outlet channel 53 from the second air outlet channel 54 and is discharged. This structure can cool the piezoelectric ceramic component 3 from the inside and outside.

[0031] In a specific embodiment, the front end assembly 1 includes a front cover portion 11, a first fixing seat 12, a second fixing seat 13, an air inlet connector 14 and an air outlet connector 15;

[0032] The end surface of the first fixing seat 12 away from the piezoelectric ceramic component 3 is provided with the air inlet connector 14 and the air outlet connector 15, and the end surface close to the piezoelectric ceramic component 3 is connected to the second fixing seat 13. The first fixing seat 12 and the second fixing seat 13 are both provided with a receiving cavity for receiving the front cover part 11. The front cover part 11 is installed in the receiving cavity and connected to the piezoelectric ceramic component 3.

[0033] The first air intake passage 51 includes a first internal passage 511 disposed in the air intake joint, a first annular passage 512 disposed between the first fixing seat and the second fixing seat, and a second internal passage 513 disposed in the front cover portion, which are sequentially connected.

[0034] Specifically, the first fixing seat 12 is an annular structure, and a first annular groove is provided on the side wall close to the second internal channel 513. After the first fixing seat and the second fixing seat are fixedly connected by screws, a first annular channel 512 is formed. The cooling air enters the first annular channel 52 from the first internal channel 511 of the air intake joint, and then enters the second internal channel 513 from the first annular channel 512.

[0035] In a specific embodiment, the front cover portion 11 includes a mounting column and an annular plate, and the annular plate is sleeved on one end of the mounting column close to the piezoelectric ceramic component 3, the side wall of the annular plate is evenly provided with a plurality of first through holes in the radial direction, and the side wall of the mounting column is provided with a plurality of second through holes in the radial direction corresponding to the first through holes, and the annular plate and the mounting column correspondingly form the second internal channel 513; specifically, in this embodiment, the front cover portion 11 is an integrated structure consisting of a mounting column and an annular plate.

[0036] Specifically, one end of the mounting column is provided with a first accommodating cavity and a second accommodating cavity that are connected in sequence along the direction close to the piezoelectric ceramic component 3, the first accommodating cavity is provided with an internal thread, one end of the first screw 33 is located in the first accommodating cavity and the second accommodating cavity, and is connected to the front cover portion 11 through the internal thread of the first accommodating cavity, and an annular gap is formed between the first screw 33 and the second accommodating cavity. Due to the annular gap formed between the second accommodating cavity and the first screw 33, it is ensured that the cooling gas in the second internal channel 513 can enter the second air inlet channel 52 through the second accommodating cavity, thereby better cooling the piezoelectric ceramic component.

[0037] Specifically, a threaded hole is provided on the outer wall of the first fixing seat, the first fixing seat and the second fixing seat are fixedly connected by screws, and are arranged inside the shell 2, and the first fixing seat is fixedly connected to the shell by screws.

[0038] In a specific embodiment, the connecting component 35 includes an intermediate cover plate 351 and an intermediate block 352, and the intermediate cover plate 351 is arranged between the first piezoelectric ceramic element 31 and the intermediate block 352; the intermediate cover plate 351 is a circular ring structure, and the intermediate block 352 is a hollow cylindrical structure, and is provided with a first internal thread and a second internal thread, and the intermediate block 352 is connected to one end of the first screw 33 through the first internal thread, and is connected to one end of the second screw 34 through the second internal thread.

[0039] Specifically, the second air inlet channel 52 includes a second annular channel 521 formed between the first piezoelectric ceramic element and the first screw rod, a third annular channel 522 formed between the middle cover plate and the first screw rod, a plurality of first annular through holes 523 arranged in the middle block, a fourth annular channel 524 formed between the second piezoelectric ceramic element and the second screw rod, a fifth annular channel 525 formed between the rear cover plate and the second screw rod, and a plurality of second annular through holes 526 arranged in the nut. This structure ensures that the cooling gas can flow through the interior of the piezoelectric ceramic assembly in sequence to cool the piezoelectric ceramic assembly.

[0040] Specifically, a plurality of first annular through holes 523 are evenly arranged in the axial direction of the middle block 352, and the plurality of first annular through holes 523 are arranged around the inner side wall in the middle, so as to ensure that the cooling gas can enter the fourth annular channel 524 through the first annular through holes 523. In this embodiment, due to the high installation and precision requirements of piezoelectric ceramics, the middle block and the middle cover plate are designed to divide them into multiple groups of piezoelectric ceramic elements, and then the first piezoelectric ceramic elements and the second piezoelectric ceramic elements are fixedly connected respectively, so as to ensure that the first piezoelectric ceramic elements and the second piezoelectric ceramic elements are accurately positioned and installed, and the installation difficulty of multiple piezoelectric ceramic elements is reduced. At the same time, the preload requirements of the piezoelectric ceramic elements are met, and it is ensured that the piezoelectric ceramic elements can only bear the axial force after the specified preload is installed, and the force is evenly applied, and the coaxiality of the two piezoelectric ceramic elements after installation is ensured, so as to ensure that the cooling gas can pass smoothly.

[0041] In a specific embodiment, the rear cover plate assembly 36 includes a rear cover plate 361 and a nut 362 ; the rear cover plate 361 is disposed between the second piezoelectric ceramic element 32 and the nut 362 , and the other end of the second screw rod 34 is connected to the nut 362 via threads.

[0042] In a specific embodiment, the first air outlet channel 53 includes a third air outlet channel 531 disposed in the second fixing seat, an annular air outlet channel 532 disposed in the first fixing seat, and a third internal channel 533 disposed in the air outlet joint.

[0043] Specifically, the third air outlet channel 531 is a plurality of third through holes evenly arranged on the end face of the second fixed seat, and a second annular groove corresponding to the plurality of third through holes, namely, an annular air outlet channel 532, is provided on the end face of the first fixed seat close to the second fixed seat. The cooling gas enters the third through hole from the second air inlet channel 52, and enters the annular air outlet channel 532 via the third through hole. The air outlet connector 15 is connected with the annular air outlet channel 532, so the cooling gas passes through the annular air outlet channel 532 and enters the third internal channel 533 of the air outlet connector and flows out.

[0044] In this embodiment, a high-power ultrasonic transducer device also includes an explosion-proof control component 6, which is connected to the ultrasonic transducer. The explosion-proof control component 6 can control the cooling gas to enter the second air inlet channel 52 from the first air inlet channel 51 to cool the inside of the piezoelectric ceramic component 3, and then enter the second air outlet channel 54 from the second air inlet channel 52 to cool the outside of the piezoelectric ceramic component 3. Finally, the cooling gas enters the first air outlet channel 53 from the second air outlet channel 54 and is discharged. At the same time, the explosion-proof control component 6 is also used to detect and control the pressure of the outer shell. Specifically, the explosion-proof control component 6 can cool the high-power ultrasonic transducer and ensure that the outer shell pressure of the ultrasonic transducer is maintained within the set normal working range; thereby avoiding the combustible gas, corrosive gas or other conductive particles in the external environment from easily affecting the piezoelectric ceramic component, ensuring that the ultrasonic transducer can work stably, and at the same time increasing the service life of the piezoelectric ceramic component.

[0045] Specifically, in this embodiment, preferably, the housing 2 is made of high-strength aluminum alloy, which can better dissipate heat and further ensure the stable operation of the ultrasonic transducer.

[0046] In a specific embodiment, Figure 4 As shown, the explosion-proof control component 6 includes a temperature detection control module 72, a pressure detection control module 70, an air intake control module, an air outlet control module, an alarm module and an ultrasonic power supply module; specifically, the temperature detection control module 72 and the ultrasonic power supply module are integrated in a positive pressure cabinet 73.

[0047] Specifically, the rear end component 4 includes a rear end cover plate 41 and a power supply and temperature measurement joint 43; the rear end cover plate 41 is connected to the end of the housing 2 away from the front end component 1, and the power supply and temperature measurement joint 43 is provided on the rear end cover plate 41; the ultrasonic transducer is electrically connected to the temperature detection control module and the ultrasonic power supply module through the power supply and temperature measurement joint 43;

[0048] Specifically, the front-end component 1 further includes a pressure measuring joint 42, and the pressure measuring joint 42 is provided at one end of the first fixing seat 12 away from the piezoelectric ceramic component 3, and a pressure detection channel 421 is provided in the pressure measuring joint, and the pressure detection channel 421 is communicated with the annular air outlet channel 532;

[0049] Specifically, the air intake control module is used to control the cooling gas flow rate entering the ultrasonic transducer from the air intake connector 14, ensuring that the piezoelectric ceramic component is maintained at a normal operating temperature while ensuring that the shell pressure is maintained within a set normal operating range; specifically, the air intake control module controls the cooling gas to continuously flow through the shell and maintain the same flow rate, thereby maintaining the shell pressure within a normal pressure range. The air outlet control module is used to control the cooling gas flow rate flowing out of the air outlet connector 15, ensuring that the shell pressure is maintained within a set normal operating range.

[0050] Specifically, the temperature detection control module is used to obtain the temperature data of the piezoelectric ceramic component, and when the temperature of the piezoelectric ceramic component reaches a set temperature threshold, control the ultrasonic power supply module to disconnect; specifically, the temperature detection control module is electrically connected to the temperature sensor in the ultrasonic transducer to obtain the temperature data of the piezoelectric ceramic component.

[0051] Specifically, the pressure detection control module is connected to the pressure measuring joint 42, so as to detect the shell pressure data, and compare the shell pressure data with the set pressure alarm upper and lower thresholds. If the shell pressure data is greater than the set pressure alarm upper threshold or less than the set pressure alarm lower threshold, the alarm module is controlled to send an alarm signal, and the air outlet control module or the air inlet control module is controlled to start accordingly; if the shell pressure data continues to rise to the set power cut-off upper limit or decrease to the set power cut-off pressure lower limit after the air outlet control module or the air inlet control module is started, the ultrasonic power module is controlled to disconnect. Specifically, the pressure detection control module detects the shell pressure through the pressure measuring joint 42. For example, when the shell pressure is lower than the set power cut-off pressure lower limit of 50Pa, the pressure detection control module controls the ultrasonic power module to disconnect.

[0052] Specifically, the air intake control module includes an air filter 61, a pressure gauge 62, a pressure regulating valve 63, a first explosion-proof solenoid valve 64 and an air intake flow meter 65; the air outlet control module includes an air outlet flow meter 66, a second explosion-proof solenoid valve 67 and a muffler 68, the pressure detection module 70 detects the shell pressure through a micro-pressure difference sensor 71, and the alarm module is an explosion-proof sound and light alarm 69.

[0053] In this embodiment, the ultrasonic transducer is connected to the explosion-proof control component, and the cooling gas from the safe area is introduced into the interior of the ultrasonic transducer. The flammable gas inside it can be thoroughly cleaned and replaced, so that a certain positive pressure is maintained inside the shell, and the flammable gas and conductive dust from the external hazardous environment are prevented from entering, thereby isolating the flammable material from the ignition source to achieve the purpose of explosion-proof.

[0054] Specifically, the present embodiment also includes a ventilation control module (not shown in the figure), which can effectively ensure that the explosion-proof control component is ventilated before use, and the next step of operation can be performed only after the ventilation is completed. That is, when the ventilation process is not completed or the shell pressure does not reach the working pressure range, the positive pressure chamber cannot be powered to ensure safety while ensuring the explosion-proof effect.

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A high-power ultrasonic transducer device, characterized in that: The invention comprises a front-end component (1), a housing (2), a piezoelectric ceramic component (3) and a rear-end component (4); one end of the housing (2) is connected to the front-end component (1), and the other end is connected to the rear-end component (4); the piezoelectric ceramic component (3) is arranged inside the housing (2), and one end is connected to the front-end component (1); a cooling gas channel is formed between the front-end component (1), the housing (2) and the piezoelectric ceramic component (3), so as to cool the inside and outside of the piezoelectric ceramic component (3); The piezoelectric ceramic assembly (3) comprises a first piezoelectric ceramic element (31), a second piezoelectric ceramic element (32), a first screw rod (33), a second screw rod (34), a connecting component (35) and a rear cover plate assembly (36); One end of the first screw rod (33) is connected to the front end assembly (1), and the other end is connected to one end of the connecting component (35), so as to fix the first piezoelectric ceramic element (31) sleeved on the outer wall of the first screw rod (33); One end of the second screw rod (34) is connected to the other end of the connecting component (35), and the other end of the second screw rod (34) is connected to the rear cover plate assembly (36), thereby fixing the second piezoelectric ceramic element (32) sleeved on the outer wall of the second screw rod (34).

2. The high-power ultrasonic transducer device according to claim 1, characterized in that: The connecting component (35) comprises an intermediate cover plate (351) and an intermediate block (352), wherein the intermediate cover plate (351) is arranged between the first piezoelectric ceramic element (31) and the intermediate block (352); The intermediate cover plate (351) is a circular ring structure, the intermediate block (352) is a hollow cylindrical structure and is provided with a first internal thread and a second internal thread, the intermediate block (352) is connected to one end of the first screw rod (33) via the first internal thread, and is connected to one end of the second screw rod (34) via the second internal thread.

3. The high-power ultrasonic transducer device according to claim 1, characterized in that: The rear cover plate assembly (36) comprises a rear cover plate (361) and a nut (362); the rear cover plate (361) is arranged between the second piezoelectric ceramic element (32) and the nut (362), and the other end of the second screw rod (34) is connected to the nut (362) by means of a thread.

4. The high-power ultrasonic transducer device according to claim 2, characterized in that: The cooling gas channel comprises a first air inlet channel (51), a second air inlet channel (52), a first air outlet channel (53) and a second air outlet channel (54); The front end component (1) is provided with the first air inlet channel (51) and the first air outlet channel (53); the interior of the piezoelectric ceramic component (3) is provided with the second air inlet channel (52); the second air outlet channel (54) is formed between the exterior of the piezoelectric ceramic component (3) and the inner wall of the housing (2); cooling gas can enter the second air inlet channel (52) from the first air inlet channel (51) to cool the interior of the piezoelectric ceramic component (3), and then enter the second air outlet channel (54) from the second air inlet channel (52) to cool the exterior of the piezoelectric ceramic component (3); finally, the cooling gas enters the first air outlet channel (53) from the second air outlet channel (54) and is discharged.

5. The high-power ultrasonic transducer device according to claim 4, characterized in that: The front end assembly (1) comprises a front cover portion (11), a first fixing seat (12), a second fixing seat (13), an air inlet connector (14) and an air outlet connector (15); The end surface of the first fixing seat (12) away from the piezoelectric ceramic component (3) is provided with the air inlet connector (14) and the air outlet connector (15) opposite to each other, and the end surface close to the piezoelectric ceramic component (3) is connected to the second fixing seat (13), and both the first fixing seat (12) and the second fixing seat (13) are provided with a receiving cavity for receiving the front cover portion (11), and the front cover portion (11) is installed in the receiving cavity and connected to the piezoelectric ceramic component (3); The first air intake passage (51) comprises a first internal passage (511) arranged in the air intake joint, a first annular passage (512) arranged between the first fixing seat and the second fixing seat, and a second internal passage (513) arranged in the front cover portion, which are connected in sequence.

6. The high-power ultrasonic transducer device according to claim 5, characterized in that: The front cover portion (11) comprises a mounting post and an annular plate, wherein the annular plate is sleeved on one end of the mounting post close to the piezoelectric ceramic component (3), a side wall of the annular plate is evenly provided with a plurality of first through holes in a radial direction, a side wall of the mounting post is provided with a plurality of second through holes in a radial direction corresponding to the first through holes, and the annular plate and the mounting post correspondingly form the second internal channel (513); One end of the mounting column is provided with a first accommodating cavity and a second accommodating cavity which are connected in sequence along a direction close to the piezoelectric ceramic component (3), the first accommodating cavity is provided with an internal thread, one end of the first screw rod (33) is located in the first accommodating cavity and the second accommodating cavity, and is connected to the front cover part (11) through the internal thread of the first accommodating cavity, and an annular gap is formed between the first screw rod (33) and the second accommodating cavity.

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