Ultrasonic transducer

Abstract

The invention relates to the field of ultrasonic transducers, and discloses an ultrasonic transducer which comprises a central conductive tube, the inner side wall of the central conductive tube is provided with a gas transmission channel, the outer surface of the central conductive tube is fixedly connected with a limiting fixing ring, and the central conductive tube is sleeved with a laminated piezoelectric mechanism and a pneumatic stabilizing mechanism. Conductive output mechanisms are uniformly and circumferentially distributed on the pneumatic stabilizing mechanism, an embedded transmission mechanism is embedded in the central conductive tube, a hole groove positioning mechanism is arranged at one end, facing the laminated piezoelectric mechanism, of the embedded transmission mechanism, and a fastening adjusting mechanism is arranged in the embedded transmission mechanism; according to the invention, by arranging the laminated piezoelectric mechanism, the plurality of piezoelectric ceramic rings vibrate synchronously, so that the strength and the stability of ultrasonic waves can be effectively enhanced; the piezoelectric ceramic rings arranged in a stacked mode are beneficial for improving the transduction efficiency through parallel operation, and therefore stronger ultrasonic wave output is obtained.

Description

Technical Field

[0001] The present invention relates to the technical field of ultrasonic transducers, and particularly to an ultrasonic transducer. Background Art

[0002] An ultrasonic transducer is a device that utilizes the piezoelectric effect or the inverse piezoelectric effect to achieve the conversion between electrical energy and acoustic energy. The electro-acoustic conversion efficiency of ultrasonic transducers is high, so they are widely used in the field of power ultrasonic technology. Among them, piezoelectric ceramics are the most common ultrasonic transducer materials.

[0003] The conversion efficiency of traditional ultrasonic transducers is often limited by a single piezoelectric ceramic ring. Especially when high-frequency ultrasonic waves are output, the conversion efficiency and intensity are prone to decrease, and there are problems with unstable mechanical components. In particular, ultrasonic transducers are prone to loosen or shift due to vibration during operation, affecting the working effect. In many ultrasonic transducers, the installation and adjustment of components are cumbersome and lack flexibility. Especially in different installation environments or size conditions, traditional devices cannot meet different requirements. During the transmission of ultrasonic waves, the loss of ultrasonic waves is often caused by inaccurate structures, resulting in low transmission efficiency. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the present invention provides an ultrasonic transducer, which solves the problems of low conversion efficiency, unstable mechanical components, inflexible adjustment, poor adaptability, and low transmission efficiency existing in traditional ultrasonic transducers.

[0005] To achieve the above objectives, the present invention is realized through the following technical solutions: An ultrasonic transducer includes a central conductive tube. An air delivery channel is provided on the inner side wall of the central conductive tube. A limit fixing ring is fixedly connected to the outer surface of the central conductive tube. A stacked piezoelectric mechanism and a pneumatic stabilizing mechanism are sleeved on the central conductive tube. Conductive output mechanisms are evenly distributed in a circumferential manner on the pneumatic stabilizing mechanism. An embedded transmission mechanism is embedded in the central conductive tube. A hole groove positioning mechanism is provided at one end of the embedded transmission mechanism facing the stacked piezoelectric mechanism. A fastening adjustment mechanism is provided inside the embedded transmission mechanism.

[0006] Preferably, the stacked piezoelectric mechanism includes a sliding push ring, a piezoelectric ceramic ring, a fixed top tube, and a first transfer air tube. The sliding push ring is sleeved on the outer side wall of the central conductive tube. The fixed top tube is fixedly connected to the outer side wall of the limit fixing ring. The piezoelectric ceramic ring is sleeved on the outer side wall of the central conductive tube and is located between the fixed top tube and the sliding push ring. The first transfer air tube is provided on the side wall of the central conductive tube. The first transfer air tube penetrates through the side wall of the central conductive tube and extends into the air delivery channel respectively. A first air collection cavity is provided on one side of the sliding push ring. Contact electrode sheets are provided between adjacent piezoelectric ceramic rings. The contact electrode sheets are sleeved on the central conductive tube.

[0007] Preferably, the pneumatic stabilizing mechanism includes an electrode tube, a flexible tapered tube, and a second transfer air tube. The electrode tube is fixedly connected to the outer sidewall of the central conductive tube. The outer sidewall of the electrode tube is provided with mounting grooves evenly distributed in a circumferential manner. Fixed pieces are fixedly connected inside each mounting groove. One side of each fixed piece is fixedly connected with a rubber fastening piece. The flexible tapered tube is slidably connected to the outer sidewall of the central conductive tube. A second air collection cavity is arranged inside the flexible tapered tube. The second transfer air tubes are evenly arranged in a ring shape in the middle of the sidewall of the central conductive tube. The second transfer air tubes all penetrate through the outer sidewall of the central conductive tube and extend into the air delivery channel and the second air collection cavity respectively.

[0008] Preferably, the conductive output mechanism includes a positioning tube and a third transfer air tube. The positioning tubes are evenly and annularly fixedly connected to the sidewall of the electrode tube. Ball bearings are slidably connected to the inner and outer sides of the positioning tubes. The positioning tubes penetrate through the sidewall of the electrode tube and extend into the electrode tube. The third transfer air tubes are annularly and evenly arranged on the outer sidewall of the central conductive tube. The third transfer air tubes all penetrate through the sidewall of the central conductive tube and extend into the air delivery channel. Pneumatic push blocks are slidably connected to the inner sides of the positioning tubes. Embedding grooves are arranged at the outer ends of the inner sides of the positioning tubes.

[0009] Preferably, the embedding transmission mechanism includes a central fixed cylinder. An arc-shaped frame is fixedly connected to the bottom end of the central fixed cylinder. The central fixed cylinder is embedded into the central conductive tube. A weight cone is fixedly connected to the bottom end of the arc-shaped frame. A limit disk is fixedly connected to the top of the central fixed cylinder. A fixing nut is fixedly connected to the top of the limit disk. A limit groove is arranged in the middle and lower part of the inner sidewall of the weight cone. An adjusting rod is fixedly connected to the inner sidewall of the weight cone. At the same time, the adjusting rod is fixedly connected inside the central fixed cylinder.

[0010] Preferably, the hole positioning mechanism includes a mounting cylinder, a hollow screw, and a linkage rotating rod. The mounting cylinder is fixedly connected to the top of the weight cone. A linkage sliding cylinder is slidably connected to the outside of the mounting cylinder. The hollow screw is arranged inside the central fixed cylinder. At the same time, the hollow screw is fixedly connected to the top of the linkage sliding cylinder, and the threaded end is embedded into the internal thread groove of the fixing nut. Bidirectional rotating rods are rotatably connected to the sidewall of the mounting cylinder in a circumferential and evenly distributed manner. Mounting plates are fixedly connected to the sidewall of the linkage sliding cylinder in a circumferential and evenly distributed manner. The bidirectional rotating rods are rotatably connected to the middle of the mounting plates. Linkage plates are rotatably connected to the outer ends of each row of the linkage rotating rods. Arc-shaped contact plates are fixedly connected to the outer sidewalls of the linkage plates.

[0011] Preferably, the fastening and adjusting mechanism includes an ultrasonic conduction rod. A guiding end is fixedly connected to the bottom end of the ultrasonic conduction rod. A limit slider is fixedly connected to the sidewall of the ultrasonic conduction rod. The limit slider is slidably connected in the limit groove. The ultrasonic conduction rod is slidably connected inside the adjusting rod through the limit slider.

[0012] Preferably, the rubber fastening pieces are evenly distributed in a circumferential manner on the outer side wall of the electrode tube.

[0013] Preferably, the piezoelectric ceramic ring is a lead-free piezoelectric material based on sodium potassium niobate or sodium bismuth titanate or barium titanate.

[0014] The present invention provides an ultrasonic transducer, which has the following beneficial effects:

[0015] 1. The present invention has an efficient ultrasonic conversion effect: By setting up a laminated piezoelectric mechanism, multiple piezoelectric ceramic rings vibrate synchronously, which can effectively enhance the intensity and stability of ultrasonic waves; The laminated piezoelectric ceramic rings help to improve the conversion efficiency through parallel operation, thereby obtaining a stronger ultrasonic output.

[0016] Efficient propagation of ultrasonic waves: When a voltage is applied, the piezoelectric ceramic will deform and be converted into mechanical vibrations, which are propagated in the form of ultrasonic waves. The efficient propagation of ultrasonic waves can improve the performance of the device in related applications and ensure a wider coverage area.

[0017] 2. The present invention has a high-precision fixing function of a pneumatic stabilizing mechanism: The pneumatic stabilizing mechanism uses air pressure to buckle and fix the conductive output mechanism and the laminated piezoelectric mechanism, providing precise control force and a stable working environment. Through the control of the pneumatic system, the fixing of these core components can be ensured during the working state, thereby guaranteeing the stability of the device. Through the hole and slot positioning mechanism, the device can automatically adjust the installation positions of the piezoelectric ceramic and other components. This makes the device have higher adaptability and flexibility, and can adapt to different installation sizes and usage environments.

[0018] 3. The present invention has a precise transmission mechanism and ultrasonic transmission effect: The embedded transmission mechanism can ensure the effective transmission of ultrasonic waves, and through the linkage with the hole and slot positioning mechanism, the output direction and intensity of ultrasonic waves can be precisely adjusted as needed. This high-precision transmission mechanism enables the device to stably output ultrasonic signals in different application scenarios. The transmission member between the ultrasonic conduction rod and the counterweight cone ensures the stable output of ultrasonic waves through the action of the limit slot. The added guiding end can accurately guide the converted ultrasonic waves to the external output end, ensuring the effective transmission and efficient propagation of ultrasonic waves.

[0019] 4. The present invention has an efficient ultrasonic transducer effect: through precise mechanical devices and pneumatic systems, automatic adjustment of components is achieved. For example, through the linkage of a rotating linkage sliding cylinder and a hollow screw, automatic adjustment and positioning of components can be realized, greatly reducing the need for manual intervention and improving the automation level of the equipment. The structure of the entire device is carefully designed to enable efficient cooperation of each component within a limited space. By using high-precision positioning mechanisms and multiple pneumatic control systems, the equipment can maintain the best performance state under different working conditions.

[0020] 5. The present invention uses lead-free piezoelectric ceramic materials to replace traditional lead zirconate titanate (PZT) materials, which is environmentally friendly and safe. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a three-dimensional schematic diagram of the main structure of the present invention;

[0022] Figure 2 is a combined schematic diagram of the central conductive tube structure of the present invention;

[0023] Figure 3 is a planar schematic diagram of the central conductive tube of the present invention;

[0024] Figure 4 is an installation schematic diagram of the pneumatic stabilizing mechanism structure of the present invention;

[0025] Figure 5 is a planar schematic diagram of the main structure of the present invention;

[0026] Figure 6 is an installation schematic diagram of the conductive output mechanism structure of the present invention;

[0027] Figure 7 is a combined schematic diagram of the embedded transmission mechanism structure of the present invention;

[0028] Figure 8 is a schematic diagram of the main structure of the hole groove positioning mechanism of the present invention;

[0029] Figure 9 is an installation schematic diagram of the fastening adjustment mechanism structure of the present invention.

[0030] Among them, 1. Central conductive tube; 2. Gas transmission channel; 3. Limit fixing ring; 4. Stacked piezoelectric mechanism; 5. Pneumatic stability mechanism; 6. Conductive output mechanism; 7. Embedded transmission mechanism; 8. Hole groove positioning mechanism; 9. Tightening adjustment mechanism; 41. Sliding push ring; 42. Piezoelectric ceramic ring; 43. Contact electrode plate; 44. Fixed top tube; 45. Gas collection chamber 1; 46. Intermediate gas pipe 1; 51. Electrode tube; 52. Installation groove; 53. Rubber fastening piece; 54. Flexible tapered tube; 55. Gas collection chamber 2; 56. Intermediate gas pipe 2; 57. Fixed piece; 61. Positioning tube; 62. Ball; 63. Intermediate gas pipe 3; 64. Pneumatic push block; 65. Embedded groove; 71. Central fixing cylinder; 72. Limit disc; 73. Fixed nut; 74. Arc-shaped frame; 75. Counterweight cone; 76. Limit groove; 77. Adjusting rod; 81. Installation cylinder; 82. Linkage sliding cylinder; 83. Hollow screw; 84. Bidirectional rotating rod; 85. Installation plate; 86. Linkage rotating rod; 87. Linkage plate; 88. Arc-shaped contact plate; 91. Ultrasonic conduction rod; 92. Guide end; 93. Limit slider. Detailed implementation manners

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0032] Please refer to the attached Figure 1 - attached Figure 7, an embodiment of the present invention provides an ultrasonic transducer, which includes a central conductive tube 1, a gas transmission channel 2, a limit fixing ring 3, a laminated piezoelectric mechanism 4, a pneumatic stabilizing mechanism 5, a conductive output mechanism 6, an embedded transmission mechanism 7, a hole groove positioning mechanism 8, and a fastening adjustment mechanism 9. The central conductive tube 1 is used for fixing the structure of the ultrasonic transducer and conducting current and ultrasonic waves; the gas transmission channel 2 is located on the central conductive tube 1 and is used to form a region for controlling pneumatic transportation in the ultrasonic transducer; the limit fixing ring 3 is located on the central conductive tube 1 and is used to guide gas into the gas transmission channel 2. Specifically, the gas transmission channel 2 is arranged on the inner side wall of the central conductive tube 1, and the limit fixing ring 3 is fixedly connected to the outer surface of the central conductive tube 1. The laminated piezoelectric mechanism 4 is arranged on one side of the central conductive tube 1 and is used to form a laminated ultrasonic conversion structure; the pneumatic stabilizing mechanism 5 is arranged on the side of the central conductive tube 1 away from the laminated piezoelectric mechanism 4 and is used for the structural assembly of the ultrasonic transducer; the conductive output mechanism 6 is evenly distributed in a circumferential manner on the pneumatic stabilizing mechanism 5 and is used for the contact conduction of current; the embedded transmission mechanism 7 is embedded in the central conductive tube 1 and is used to fix the ultrasonic or current conduction structure; the hole groove positioning mechanism 8 is arranged at one end of the embedded transmission mechanism 7 facing the laminated piezoelectric mechanism 4 and is used to tightly attach to the inside of the central conductive tube 1 and adjust the position; the fastening adjustment mechanism 9 is arranged inside the embedded transmission mechanism 7 and is used for the bidirectional conduction of the converted ultrasonic waves or current.

[0033] First, the device mainly conducts alternating current to the laminated piezoelectric mechanism 4 through the conductive output mechanism 6 installed on the central conductive tube 1. The electric field causes the piezoelectric ceramics of the laminated piezoelectric mechanism 4 to deform and generate mechanical vibrations. Due to the laminated characteristics of the ceramic layers, multiple ceramic rings vibrate synchronously, generating strong mechanical vibrations, and these mechanical vibrations are propagated in the form of ultrasonic waves; the pneumatic stabilizing mechanism 5 included in the device uses air pressure to buckle and fix the conductive output mechanism 6 and the laminated piezoelectric mechanism 4 to the central conductive tube 1, and the embedded transmission mechanism 7, hole groove positioning mechanism 8, and fastening adjustment mechanism 9 installed inside the central conductive tube 1 can transmit the ultrasonic waves to the output source, and at the same time, according to different installation dimensions, the hole groove positioning mechanism 8 can be used to automatically adjust the installation positions of the embedded transmission mechanism 7, hole groove positioning mechanism 8, and fastening adjustment mechanism 9 inside the central conductive tube 1.

[0034] Please refer to the attached Figure 1 - attached Figure 5, the stacked piezoelectric mechanism 4 is located on the central conductive tube 1 and is used to form a stacked ultrasonic conversion structure. The stacked piezoelectric mechanism 4 includes a sliding push ring 41, a piezoelectric ceramic ring 42, a fixed top tube 44, and a first transfer air tube 46. The sliding push ring 41 is sleeved on the outer side wall of the central conductive tube 1, the fixed top tube 44 is fixedly connected to the outer side wall of the limit fixing ring 3, the piezoelectric ceramic ring 42 is sleeved on the outer side wall of the central conductive tube 1 and is located between the fixed top tube 44 and the sliding push ring 41. The first transfer air tube 46 is arranged on the side wall of the central conductive tube 1. The first transfer air tube 46 penetrates through the side wall of the central conductive tube 1 and extends into the air delivery channel 2 respectively. A first air collection cavity 45 is arranged on one side of the sliding push ring 41. Contact electrode plates 43 are arranged between adjacent piezoelectric ceramic rings 42. The contact electrode plates 43 are sleeved on the central conductive tube 1. The piezoelectric ceramic ring 42 is a lead-free piezoelectric material based on sodium potassium niobate or sodium bismuth titanate or barium titanate. By injecting pressurized air into the first air collection cavity 45 arranged inside the sliding push ring 41, the pressurized air will push the sliding push ring 41 to slide downward along the outer side wall of the central conductive tube 1 at this time. When the sliding push ring 41 descends, the piezoelectric ceramic ring 42 at the bottom of the sliding push ring 41 will, under the reaction force of the fixed fixed top tube 44, expand and closely contact each other among the piezoelectric ceramic rings 42. The pressurized air enters the air delivery channel 2 arranged inside the central conductive tube 1 through the first transfer air tube 46 arranged on the side wall of the central conductive tube 1 and is continuously conveyed by the air delivery channel 2.

[0035] Please refer to the appendix Figure 1 - appendix Figure 6 , the pneumatic stabilizing mechanism 5 includes an electrode tube 51, a flexible tapered tube 54, and a second transfer air tube 56. The electrode tube 51 is fixedly connected to the outer side wall of the central conductive tube 1. Uniformly circumferentially distributed mounting grooves 52 are arranged on the outer side wall of the electrode tube 51. Fixed pieces 57 are fixedly connected inside the mounting grooves 52. A rubber fastening piece 53 is fixedly connected to one side of the fixed piece 57. The flexible tapered tube 54 is slidably connected to the outer side wall of the central conductive tube 1. A second air collection cavity 55 is arranged inside the flexible tapered tube 54. The second transfer air tube 56 is uniformly annularly arranged in the middle of the side wall of the central conductive tube 1. The second transfer air tube 56 penetrates through the outer side wall of the central conductive tube 1 and extends into the air delivery channel 2 and the second air collection cavity 55 respectively. The rubber fastening pieces 53 are uniformly circumferentially distributed on the outer side wall of the electrode tube 51. When the pressurized air reaches the height of the flexible tapered tube 54, the pressurized air will be conveyed into the second air collection cavity 55 arranged inside the flexible tapered tube 54 through the second transfer air tube 56. The thrust of the pressurized air will push the flexible tapered tube 54 outward, causing the flexible tapered tube 54 to expand outward along the central conductive tube 1. The flexible tapered tube 54 will contact the rubber fastening piece 53 fixed to the top of the electrode tube 51 through the fixed piece 57. The tapered surface of the flexible tapered tube 54 will push the rubber fastening piece 53 outward at the same time, causing the rubber fastening piece 53 to also closely contact the flexible tapered tube 54 at the same time, so as to drive the stacked piezoelectric mechanism 4 and the pneumatic stabilizing mechanism 5 to be buckled and fixed to each other.

[0036] Please refer to the attached Figure 1 - attached Figure 6 , the conductive output mechanism 6 includes a positioning tube 61 and a transfer air pipe three 63. The positioning tube 61 is fixedly connected to the side wall of the electrode tube 51 in a uniform ring shape. Ball bearings 62 are slidably connected to both the inner and outer sides of the positioning tube 61. The positioning tube 61 penetrates the side wall of the electrode tube 51 and extends into the interior of the electrode tube 51. The transfer air pipe three 63 is arranged in a uniform ring shape on the outer side wall of the central conductive tube 1. The transfer air pipe three 63 penetrates the side wall of the central conductive tube 1 and extends into the air delivery channel 2. Pneumatic push blocks 64 are slidably connected to the inner sides of the positioning tube 61. Embedding grooves 65 are arranged at the outer ends of the inner sides of the positioning tube 61. When the pressurized air reaches the height of the positioning tube 61, it will enter the interior of the positioning tube 61 through the transfer air pipe three 63 installed on the side wall of the central conductive tube 1. The pressurized air simultaneously pushes the pneumatic push blocks 64 installed inside the positioning tube 61 outward, and respectively pushes the ball bearings 62 to move along the interior of the positioning tube 61, so that the ball bearings 62 simultaneously extend out of the interior of the positioning tube 61. At the same time, under the action of the embedding grooves 65 arranged inside the positioning tube 61, the ball bearings 62 cannot be separated from the positioning tube 61. The outward-extending ball bearings 62 simultaneously abut against the external alternating current output device, receive the alternating voltage from multiple directions by means of the ball bearings 62, and output it to the sliding push ring 41 along the central conductive tube 1, and use the laminated piezoelectric mechanism 4 to perform ultrasonic energy conversion operation. At the same time, only by sucking back the pressurized air in the reverse direction can the conductive output mechanism 6 and the laminated piezoelectric mechanism 4 be removed.

[0037] Please refer to the attached Figure 1 - attached Figure 9 , the embedding transmission mechanism 7 includes a central fixing cylinder 71. An arc-shaped frame 74 is fixedly connected to the bottom end of the central fixing cylinder 71. The central fixing cylinder 71 is embedded in the central conductive tube 1. A counterweight cone 75 is fixedly connected to the bottom end of the arc-shaped frame 74. A limit disk 72 is fixedly connected to the top of the central fixing cylinder 71. A fixing nut 73 is fixedly connected to the top of the limit disk 72. A limit groove 76 is arranged in the middle and lower part of the inner side wall of the counterweight cone 75. An adjusting rod 77 is fixedly connected to the inner side wall of the counterweight cone 75. At the same time, the adjusting rod 77 is fixedly connected to the inside of the central fixing cylinder 71.

[0038] Please refer to the attached Figure 1 - attached Figure 8, the hole and groove positioning mechanism 8 includes an installation cylinder 81, a hollow screw 83 and a linkage rotating rod 86. The installation cylinder 81 is fixedly connected to the top of the counterweight cone 75. A linkage sliding cylinder 82 is slidably connected to the outside of the installation cylinder 81. The hollow screw 83 is arranged inside the central fixed cylinder 71. At the same time, the hollow screw 83 is fixedly connected to the top of the linkage sliding cylinder 82, and the threaded end is embedded in the internal thread groove of the fixed nut 73. The side wall of the installation cylinder 81 is rotatably connected with bidirectional rotating rods 84 evenly distributed in a circumferential manner. The side wall of the linkage sliding cylinder 82 is fixedly connected with mounting plates 85 evenly distributed in a circumferential manner. The bidirectional rotating rods 84 are rotatably connected to the middle of the mounting plates 85. The outer ends of each column of linkage rotating rods 86 are rotatably connected with linkage plates 87. Arc-shaped contact plates 88 are fixedly connected to the outer side walls of the linkage plates 87.

[0039] The ultrasonic waves generated by the stacked piezoelectric mechanism 4 can pass through the embedding transmission mechanism 7 embedded in the central conductive tube 1. When the embedding transmission mechanism 7 is completely embedded in the central conductive tube 1, the hole and groove positioning mechanism 8 is activated. By rotating the hollow screw 83 fixed to the linkage sliding cylinder 82, the hollow screw 83 rotates along the fixed nut 73 installed on the top of the limit disk 72 and displaces towards the inside of the central conductive tube 1. The movement of the hollow screw 83 drives the linkage sliding cylinder 82 fixed to the inner end to slide and displace on the outer side wall of the installation cylinder 81. The displacement of the linkage sliding cylinder 82 drives the fixedly arranged mounting plates 85 to displace simultaneously. The mounting plates 85 then drive the linkage rotating rods 86 to rotate respectively. Due to the displacement limitation of the bidirectional rotating rods 84 installed in the middle of the mounting plates 85, the linkage rotating rods 86 can only rotate along the mounting plates 85. The circumferentially installed bidirectional rotating rods 84 then expand towards the outside direction and simultaneously drive the arc-shaped contact plates 88 to displace towards the outside direction. The diameter of the ring formed by the arc-shaped contact plates 88 then increases until the arc-shaped contact plates 88 are tightly attached to the inner side wall of the central conductive tube 1 and are positioned at the center inside the central conductive tube 1.

[0040] Please refer to the appendix Figure 1 - appendix Figure 8 , the fastening and adjustment mechanism 9 includes an ultrasonic conduction rod 91. A guiding end 92 is fixedly connected to the bottom end of the ultrasonic conduction rod 91. A limit slider 93 is fixedly connected to the side wall of the ultrasonic conduction rod 91. The limit slider 93 is slidably connected in the limit groove 76. The ultrasonic conduction rod 91 is slidably connected inside the adjustment rod 77 through the limit slider 93. The limit slider 93 installed on the ultrasonic conduction rod 91 slides in the limit groove 76 installed on the inner side wall of the counterweight cone 75, forming a transmission component between the ultrasonic conduction rod 91 and the counterweight cone 75, and transmitting the converted ultrasonic waves to the outside through the guiding end 92 installed at the end of the ultrasonic conduction rod 91.

[0041] Working principle: First, the device mainly conducts alternating current to the laminated piezoelectric mechanism 4 through the conductive output mechanism 6 installed on the central conductive tube 1. The electric field causes the piezoelectric ceramics of the laminated piezoelectric mechanism 4 to deform and generate mechanical vibrations. Due to the laminated characteristics of the ceramic layers, multiple ceramic rings vibrate synchronously, generating strong mechanical vibrations, which are propagated in the form of ultrasonic waves; the pneumatic stabilizing mechanism 5 included in the device uses air pressure to buckle and fix the conductive output mechanism 6 and the laminated piezoelectric mechanism 4 on the central conductive tube 1. The embedded transmission mechanism 7, the hole groove positioning mechanism 8, and the fastening adjustment mechanism 9 installed inside the central conductive tube 1 can transmit ultrasonic waves to the output source. At the same time, according to different installation dimensions, the hole groove positioning mechanism 8 can be used to automatically adjust the installation positions of the embedded transmission mechanism 7, the hole groove positioning mechanism 8, and the fastening adjustment mechanism 9 inside the central conductive tube 1. First, pressurized air is injected into the air collecting chamber 45 arranged inside the sliding push ring 41. The pressurized air will push the sliding push ring 41 to slide downward along the outer wall of the central conductive tube 1. When the sliding push ring 41 descends, the piezoelectric ceramic rings 42 at the bottom of the sliding push ring 41 will expand and come into close contact with each other under the reaction force of the fixed top tube 44. The pressurized air enters the air delivery channel 2 arranged inside the central conductive tube 1 through the transfer air pipe 46 arranged on the side wall of the central conductive tube 1 and is continuously delivered by the air delivery channel 2. When the pressurized air reaches the height of the flexible cone tube 54, the pressurized air will be delivered into the air collecting chamber 55 arranged inside the flexible cone tube 54 through the transfer air pipe 56. The thrust of the pressurized air will push the flexible cone tube 54 outward, causing the flexible cone tube 54 to expand outward along the central conductive tube 1. The flexible cone tube 54 will contact the rubber fastening piece 53 fixed on the top of the electrode tube 51 through the fixing piece 57. The conical surface of the flexible cone tube 54 will push the rubber fastening piece 53 outward at the same time, causing the rubber fastening piece 53 to also come into close contact with the flexible cone tube 54, thereby driving the laminated piezoelectric mechanism 4 and the pneumatic stabilizing mechanism 5 to be buckled and fixed to each other. At this time, the pressurized air will also be delivered inside the air delivery channel 2. When the pressurized air reaches the height of the positioning tube 61, it will enter the positioning tube 61 through the transfer air pipe 63 installed on the side wall of the central conductive tube 1. The pressurized air will push the pneumatic push blocks 64 installed inside the positioning tube 61 to move outward at the same time, and respectively push the balls 62 to move along the inside of the positioning tube 61, causing the balls 62 to extend out of the inside of the positioning tube 61 at the same time. At the same time, under the action of the embedded groove 65 arranged inside the positioning tube 61, the balls 62 cannot be separated from the positioning tube 61. The outward-extending balls 62 will simultaneously press against the external alternating current output device, receive the alternating voltage from multiple directions by using the balls 62, and output it along the central conductive tube 1 to the sliding push ring 41, and use the laminated piezoelectric mechanism 4 to perform ultrasonic energy conversion operations. At the same time, the conductive output mechanism 6 and the laminated piezoelectric mechanism 4 can be removed only by withdrawing the pressurized air in the reverse direction.The ultrasonic waves generated by the stacked piezoelectric mechanism 4 can pass through the embedded transmission mechanism 7 embedded in the central conductive tube 1. After the embedded transmission mechanism 7 is completely embedded into the central conductive tube 1, the hole and groove positioning mechanism 8 is enabled. By rotating the hollow screw 83 fixed to the rotating linkage cylinder 82, the hollow screw 83 rotates along the fixed nut 73 installed on the top of the limit disc 72 and displaces towards the inside of the central conductive tube 1. The movement of the hollow screw 83 drives the linkage cylinder 82 fixed to the inner end to slide and displace on the outer side wall of the installation cylinder 81. The displacement of the linkage cylinder 82 drives the simultaneously displaced mounting plate 85 fixed around it. The mounting plate 85 then drives the linkage rotating rod 86 to rotate respectively. Due to the displacement limitation of the bidirectional rotating rod 84 installed in the middle of the mounting plate 85, the linkage rotating rod 86 can only rotate along the mounting plate 85. The bidirectional rotating rod 84 installed around it then expands towards the outside direction and simultaneously drives the arc-shaped contact plate 88 to displace towards the outside direction. The diameter of the ring formed by the arc-shaped contact plate 88 then increases until the arc-shaped contact plate 88 closely fits against the inner side wall of the central conductive tube 1 and is simultaneously positioned at the center inside the central conductive tube 1. The limit slider 93 installed on the ultrasonic conduction rod 91 slides in the limit groove 76 installed on the inner side wall of the weight cone 75, forming a transmission component between the ultrasonic conduction rod 91 and the weight cone 75, and transmitting the converted ultrasonic waves to the outside through the guiding end 92 installed at the end of the ultrasonic conduction rod 91.

[0042] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An ultrasonic transducer, characterized in that: The invention comprises a central conductive tube (1), wherein the inner side wall of the central conductive tube (1) is provided with a gas transmission channel (2), the outer surface of the central conductive tube (1) is fixedly connected to a limit fixing ring (3), the central conductive tube (1) is sleeved with a stacked piezoelectric mechanism (4) and a pneumatic stabilizing mechanism (5), the pneumatic stabilizing mechanism (5) is provided with a conductive output mechanism (6) evenly distributed in a circular pattern, the central conductive tube (1) is embedded with an embedded transmission mechanism (7), the embedded transmission mechanism (7) is provided with a hole groove positioning mechanism (8) at one end facing the stacked piezoelectric mechanism (4), and a tightening adjustment mechanism (9) is provided inside the embedded transmission mechanism (7).

2. An ultrasonic transducer according to claim 1, characterized in that: The stacked piezoelectric mechanism (4) comprises a sliding push ring (41), a piezoelectric ceramic ring (42), a fixed top tube (44) and a transfer gas pipe (46); the sliding push ring (41) is sleeved on the outer wall of the central conductive tube (1); the fixed top tube (44) is fixedly connected to the outer wall of the limit fixing ring (3); the piezoelectric ceramic ring (42) is sleeved on the outer wall of the central conductive tube (1) and is located between the fixed top tube (44) and the sliding push ring (41); the transfer gas pipe (46) is arranged on the side wall of the central conductive tube (1); the transfer gas pipes (46) penetrate the side wall of the central conductive tube (1) and extend to the inside of the gas transmission channel (2); a gas collecting cavity (45) is arranged on one side of the sliding push ring (41); contact electrode sheets (43) are arranged between adjacent piezoelectric ceramic rings (42); the contact electrode sheets (43) are sleeved on the central conductive tube (1).

3. The ultrasonic transducer according to claim 1, characterized in that: The pneumatic stabilization mechanism (5) comprises an electrode tube (51), a flexible cone tube (54) and a second transfer gas tube (56); the electrode tube (51) is fixedly connected to the outer wall of the central conductive tube (1); the outer wall of the electrode tube (51) is provided with mounting grooves (52) evenly distributed in a circumferential manner; a fixing plate (57) is fixedly connected inside the mounting grooves (52); a rubber fastening plate (53) is fixedly connected to one side of the fixing plate (57); the flexible cone tube (54) is slidably connected to the outer wall of the central conductive tube (1); a second gas collecting cavity (55) is provided inside the flexible cone tube (54); the second transfer gas tube (56) is evenly annularly arranged in the middle of the side wall of the central conductive tube (1); the second transfer gas tube (56) penetrates the outer wall of the central conductive tube (1) and extends to the gas transmission channel (2) and the second gas collecting cavity (55) respectively.

4. An ultrasonic transducer according to claim 3, characterized in that: The conductive output mechanism (6) comprises a positioning tube (61) and a third transfer gas tube (63). The positioning tube (61) is evenly and annularly fixedly connected to the side wall of the electrode tube (51). The inner and outer sides of the positioning tube (61) are slidably connected with balls (62). The positioning tube (61) penetrates the side wall of the electrode tube (51) and extends into the inside of the electrode tube (51). The third transfer gas tube (63) is evenly and annularly arranged on the outer side wall of the central conductive tube (1). The third transfer gas tube (63) penetrates the side wall of the central conductive tube (1) and extends into the gas transmission channel (2). The inner side of the positioning tube (61) is slidably connected with a pneumatic push block (64). The inner outer end of the positioning tube (61) is provided with an embedding groove (65).

5. The ultrasonic transducer according to claim 1, characterized in that: The embedded transmission mechanism (7) comprises a central fixed cylinder (71), the bottom end of the central fixed cylinder (71) is fixedly connected to an arc frame (74), the central fixed cylinder (71) is embedded in the central conductive tube (1), the bottom end of the arc frame (74) is fixedly connected to a counterweight cone block (75), the top of the central fixed cylinder (71) is fixedly connected to a limiting disk (72), the top of the limiting disk (72) is fixedly connected to a fixing nut (73), a limiting groove (76) is provided at the middle and lower part of the inner side wall of the counterweight cone block (75), the inner side wall of the counterweight cone block (75) is fixedly connected to an adjustment rod (77), and the adjustment rod (77) is fixedly connected to the inside of the central fixed cylinder (71).

6. An ultrasonic transducer according to claim 5, characterized in that: The hole groove positioning mechanism (8) comprises a mounting tube (81), a hollow screw (83) and a linkage rotating rod (86); the mounting tube (81) is fixedly connected to the top of the counterweight cone block (75); the outer side of the mounting tube (81) is slidably connected to a linkage slide tube (82); the hollow screw (83) is arranged inside the central fixed tube (71); at the same time, the hollow screw (83) is fixedly connected to the top of the linkage slide tube (82), and the threaded end is embedded in the internal thread groove of the fixing nut (73); the side wall of the mounting tube (81) is rotatably connected to a bidirectional rotating rod (84) evenly distributed in a circumference; the side wall of the linkage slide tube (82) is fixedly connected to a mounting plate (85) evenly distributed in a circumference; the bidirectional rotating rod (84) is rotatably connected to the middle part of the mounting plate (85); the outer end of each row of the linkage rotating rods (86) is rotatably connected to a linkage plate (87); the outer wall of the linkage plate (87) is fixedly connected to an arc-shaped contact plate (88).

7. The ultrasonic transducer according to claim 5, characterized in that: The tightening adjustment mechanism (9) comprises an ultrasonic conduction rod (91), the bottom end of the ultrasonic conduction rod (91) is fixedly connected to a guide end (92), the side wall of the ultrasonic conduction rod (91) is fixedly connected to a limit slider (93), the limit slider (93) is slidably connected in a limit groove (76), and the ultrasonic conduction rod (91) is slidably connected to the inside of the adjustment rod (77) via the limit slider (93).

8. The ultrasonic transducer according to claim 3, characterized in that: The rubber fastening sheets (53) are evenly distributed circumferentially on the outer side wall of the electrode tube (51).

9. The ultrasonic transducer according to claim 2, characterized in that: The piezoelectric ceramic ring (42) is a lead-free piezoelectric material based on potassium sodium niobate, sodium bismuth titanate or barium titanate.

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