Multilayer sealed ultrasonic transducer

Abstract

The utility model discloses a kind of multilayer sealed ultrasonic transducer, belong to ultrasonic transducer field, internal cavity of shell body is equipped with internal dismounting frame, the side wall of internal dismounting frame is equipped with limit frame in upper and lower part, limit groove is opened between limit frame and internal dismounting frame, limit groove is connected with limit type movable ring in each, a plurality of reset spring is installed in the hole of internal dismounting frame, reset spring is connected with limit type movable ring, realize the up and down activity of limit type movable ring.The multilayer sealing structure designed is set by sealing ring in the both ends of shell, combined with buffer filler and limit movable ring, improve the air tightness and water tightness of ultrasonic transducer, ensure that equipment is stable and reliable.Limit jacking mechanism uses reset spring and limit ring, dynamically adjusts sealing ring, automatically compensates the clearance change caused by temperature and vibration, reduces leakage risk.Limit frame and groove design guarantee the stability and accuracy of movable ring movement.

Description

Technical Field

[0001] This utility model relates to the field of ultrasonic transducers, and in particular to a multi-layer sealed ultrasonic transducer. Background Technology

[0002] An ultrasonic transducer is a device that converts electromagnetic energy into mechanical energy (acoustic energy), and its working principle is based on the piezoelectric effect. When a piezoelectric material is subjected to an electric field, it deforms, thereby generating mechanical vibrations, which in turn generate ultrasonic waves. Conversely, when ultrasonic waves act on a piezoelectric material, they also cause deformation of the material, thereby generating electrical signals. Therefore, an ultrasonic transducer can not only convert electrical signals into ultrasonic signals, but also convert ultrasonic signals back into electrical signals.

[0003] In practical applications, the temperature characteristics of ultrasonic transducers are a key consideration. During operation, ultrasonic transducers generate heat, and the temperature of their operating environment can also fluctuate. Due to limitations in material properties, single-layer seals often struggle to maintain stable sealing performance in high-temperature or frequently fluctuating environments. As temperature increases, the sealing material may expand or soften, leading to decreased sealing performance and even leakage. This not only affects the normal operation of the ultrasonic transducer but may also accelerate the aging of its internal components, thus shortening its service life.

[0004] Vibration is also a significant factor affecting the lifespan of single-layer seals. Ultrasonic transducers generate high-frequency vibrations during operation, which apply continuous mechanical stress to the seal. Prolonged high-frequency vibration can lead to seal material fatigue, cracking, or detachment, resulting in a loss of sealing effectiveness. This wear and tear is particularly pronounced when the transducer's vibration amplitude is large or its duration is long. Utility Model Content

[0005] The main objective of this invention is to provide a multi-layer sealed ultrasonic transducer that can effectively solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A multilayer sealed ultrasonic transducer includes a transducer housing, an outer shell, and a mounting position, wherein the outer shell is located on the transducer housing, and the mounting position is located at the upper end of the transducer housing;

[0008] An internal disassembly frame is installed in the inner cavity of the outer shell, and a limiting frame is provided on the upper and lower parts of the side wall of the internal disassembly frame. A limiting groove is opened between the limiting frame and the internal disassembly frame. A limiting movable ring is connected in each limiting groove. Multiple return springs are installed at the opening on the internal disassembly frame. The return springs are connected to the limiting movable ring to realize the up and down movement of the limiting movable ring.

[0009] The upper end of the limiting movable ring is connected to a sealing ring through a buffer packing element. The sealing rings are located at both ends of the outer shell to achieve multi-layer sealing. The sealing rings are lifted up by the buffer packing element and the limiting movable ring.

[0010] As a preferred embodiment of this application, the inner wall of the buffer packing component is provided with a first packing chamber, and the outer wall of the buffer packing component is provided with a second packing chamber, so that the buffer packing component can lift the sealing ring through the first packing chamber and the second packing chamber;

[0011] As a preferred embodiment of this application, the first and second packing chambers are filled with sealing packing, which is one or a mixture of synthetic fiber packing, expanded graphite packing, polytetrafluoroethylene packing, and rubber packing.

[0012] As a preferred embodiment of this application, the side wall of the internal disassembly frame is provided with a mating screw hole, and a bolt is inserted into the mating screw hole to fix the internal disassembly frame to the outer shell. The internal disassembly frame is composed of two semi-circular rings. The internal disassembly frame and the limiting frame are designed as an integral part. The cross-section of the limiting frame is "L" shaped, and the upper and lower limiting frames are symmetrically arranged on the internal disassembly frame.

[0013] As a preferred embodiment of this application, the plurality of openings are distributed on the internal disassembly frame, and each reset spring is installed in the opening. The reset spring is fixed to the limiting movable ring by bolts.

[0014] As a preferred embodiment of this application, the buffer packing is heat-fused and fixed to the limiting movable ring and the sealing ring. The cross-section of the buffer packing is designed in a "Z" shape, and the sealing ring is bonded and fixed to the outer shell by adhesive.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] By employing a multi-layered sealing structure—with sealing rings at both ends of the outer casing and the synergistic effect of buffer packing and limiting movable rings—the sealing performance is effectively enhanced. This multi-layered sealing method significantly improves the airtightness and watertightness of the ultrasonic transducer, preventing liquid or gas leakage and thus ensuring the stability and reliability of the equipment.

[0017] The limiting and lifting mechanism, through the cooperation of a return spring and a limiting movable ring, achieves dynamic lifting and adjustment of the sealing ring. This design not only automatically compensates for changes in the sealing gap caused by factors such as temperature variations and vibration during equipment operation, but also effectively avoids leakage risks caused by sealing ring aging and wear. Simultaneously, the design of the limiting frame and limiting groove ensures the stability and accuracy of the limiting movable ring during movement.

[0018] The equipment's multi-layer sealing mechanism and limiting lifting mechanism both feature a design that facilitates easy disassembly and maintenance. The internal disassembly frame is bolted to the outer casing, allowing users to easily disassemble and replace components such as sealing rings. This design not only improves the equipment's maintainability but also reduces the user's maintenance costs and time. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a partial structural illustration of the present invention;

[0021] Figure 3 This is a diagram showing the internal assembly / disassembly frame, the limiting frame, the limiting movable ring, and the sealing ring of this utility model;

[0022] Figure 4 This is an exploded view of the internal assembly / disassembly frame, the limiting frame, the limiting movable ring, and the sealing ring of this utility model;

[0023] Figure 5 for Figure 4 Enlarged diagram of point A in the middle.

[0024] In the diagram: 1. Transducer housing; 2. Outer shell; 3. Mounting position; 4. Internal disassembly frame; 5. Connecting screw hole; 6. Limiting frame; 7. Limiting groove; 8. Return spring; 9. Limiting movable ring; 10. Buffer packing; 11. Sealing ring; 12. First packing chamber; 13. Second packing chamber. Detailed Implementation

[0025] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0026] like Figure 1 - Figure 5 As shown, a multi-layer sealed ultrasonic transducer includes a transducer housing 1, an outer shell 2, and a mounting position 3. The outer shell 2 is located above the transducer housing 1, while the mounting position 3 is located at the upper end of the transducer housing 1.

[0027] An internal disassembly frame 4 is disposed within the inner cavity of the outer casing 2. Symmetrical limiting frames 6 are provided at the upper and lower ends of the side walls of the internal disassembly frame 4, forming limiting grooves 7 between the limiting frames 6 and the internal disassembly frame 4. Each limiting groove 7 is connected to a limiting movable ring 9, and multiple return springs 8 are installed at the openings of the internal disassembly frame 4. These return springs 8 are connected to the limiting movable rings 9, thereby enabling the limiting movable rings 9 to move up and down.

[0028] The upper end of the limiting movable ring 9 is connected to the sealing ring 11 via the buffer packing element 10. The sealing rings 11 are respectively disposed at both ends of the outer shell 2 to achieve a multi-layer sealing effect. Through the synergistic action of the buffer packing element 10 and the limiting movable ring 9, the sealing ring 11 can be effectively lifted.

[0029] The inner wall of the buffer packing member 10 is provided with a first packing chamber 12, while its outer wall is provided with a second packing chamber 13. By setting the first packing chamber 12 and the second packing chamber 13, the buffer packing member 10 can exert a top-supporting effect on the sealing ring 11.

[0030] The first packing chamber 12 and the second packing chamber 13 are filled with sealing packing material, which may be one of synthetic fiber packing material, expanded graphite packing material, polytetrafluoroethylene packing material, rubber packing material, or a mixture of one or more of these materials.

[0031] The internal disassembly frame 4 has mating screw holes 5 on its side wall, and the internal disassembly frame 4 is fixed to the outer shell 2 by inserting bolts. The internal disassembly frame 4 consists of two semi-circular rings and is integrated with the limiting frame 6. The limiting frame 6 has an "L" shaped cross-section, and the upper and lower limiting frames 6 are symmetrically distributed on the internal disassembly frame 4.

[0032] Multiple openings are distributed on the internal disassembly frame 4, and each reset spring 8 is installed in these openings and fixed to the limiting movable ring 9 by bolts.

[0033] The buffer packing element 10 is fixed to the limiting movable ring 9 and the sealing ring 11 by heat fusion, and its cross-section is designed as a "Z". The sealing ring 11 is fixed to the outer shell 2 by adhesive bonding.

[0034] An internal disassembly frame 4 is installed inside the cavity of the outer casing 2. Limiting frames 6 are installed at the upper and lower ends of the side walls of the internal disassembly frame 4, forming limiting grooves 7. A limiting movable ring 9 is installed in each limiting groove 7. Multiple return springs 8 are installed at the openings of the internal disassembly frame 4, and the return springs 8 are connected to the limiting movable rings 9 to allow the limiting movable rings 9 to move up and down. The upper end of the limiting movable ring 9 is connected to a sealing ring 11 via a buffer packing element 10. Sealing rings 11 are provided at both ends of the outer casing 2 to achieve a multi-layer sealing effect.

[0035] The inner wall of the buffer packing component 10 is provided with a first packing chamber 12, and the outer wall is provided with a second packing chamber 13. Sealing packing is filled in the first and second packing chambers 12 and 13. The internal disassembly frame 4 is fixed to the outer shell 2 by bolts. The internal disassembly frame 4 consists of two semi-circular rings and is integrated with the limiting frame 6. A mating screw hole 5 is provided on the side wall of the internal disassembly frame 4. Multiple openings are distributed on the internal disassembly frame 4, and a return spring 8 is installed in each opening. The return spring 8 is fixed to the limiting movable ring 9 by bolts. The buffer packing component 10 is fixed to the limiting movable ring 9 and the sealing ring 11 by heat fusion, and its cross-section is designed in a "Z" shape. The sealing ring 11 is fixed to the outer shell 2 by adhesive bonding.

[0036] It should be noted that, in this document, relational terms such as first and second (number one, number two), etc., are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A multi-layer sealed ultrasonic transducer, comprising a transducer housing (1), an outer shell (2), and a mounting position (3), wherein the outer shell (2) is located on the transducer housing (1), and the mounting position (3) is located at the upper end of the transducer housing (1), characterized in that: An internal disassembly frame (4) is installed in the inner cavity of the outer shell (2), and a limiting frame (6) is provided on the upper and lower parts of the side wall of the internal disassembly frame (4). A limiting groove (7) is opened between the limiting frame (6) and the internal disassembly frame (4). A limiting movable ring (9) is connected in each limiting groove (7). Multiple return springs (8) are installed at the opening on the internal disassembly frame (4). The return springs (8) are connected to the limiting movable ring (9) to realize the up and down movement of the limiting movable ring (9). The upper end of the limiting movable ring (9) is connected to a sealing ring (11) through a buffer packing element (10). The sealing ring (11) is located at both ends of the outer shell (2) to achieve multi-layer sealing. The sealing ring (11) is lifted by the buffer packing element (10) and the limiting movable ring (9).

2. The multi-layer sealed ultrasonic transducer according to claim 1, characterized in that: The inner wall of the buffer packing component (10) is provided with a first packing chamber (12), and the outer wall of the buffer packing component (10) is provided with a second packing chamber (13). The first packing chamber (12) and the second packing chamber (13) are used to lift the sealing ring (11) by the buffer packing component (10).

3. The multi-layer sealed ultrasonic transducer according to claim 2, characterized in that: The first packing chamber (12) and the second packing chamber (13) are filled with sealing packing, which is a mixture of one or more of the following materials: synthetic fiber packing, expanded graphite packing, polytetrafluoroethylene packing, and rubber packing.

4. A multi-layer sealed ultrasonic transducer according to claim 1 or 3, characterized in that: The side wall of the internal disassembly frame (4) is provided with a connecting screw hole (5). The connecting screw hole (5) is used to insert a bolt to fix the internal disassembly frame (4) to the outer shell (2). The internal disassembly frame (4) is composed of two semi-circular rings. The internal disassembly frame (4) and the limiting frame (6) are designed as an integral part. The cross-section of the limiting frame (6) is "L" shaped. The upper and lower limiting frames (6) are symmetrically arranged on the internal disassembly frame (4).

5. A multi-layer sealed ultrasonic transducer according to claim 4, characterized in that: Multiple openings are distributed on the internal disassembly frame (4), and each reset spring (8) is installed in the opening. The reset spring (8) is fixed to the limiting movable ring (9) by bolts.

6. A multi-layer sealed ultrasonic transducer according to claim 5, characterized in that: The buffer packing component (10) is heat-fused and fixed to the limiting movable ring (9) and the sealing ring (11). The cross-section of the buffer packing component (10) is designed in a "Z" shape. The sealing ring (11) is glued and fixed to the outer shell (2) by adhesive.

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