Impedance composite muffler

Abstract

The utility model relates to impedance composite muffler technical field discloses an impedance composite muffler, including the muffler body, one end of muffler body is equipped with the sound inlet, the other end of muffler body is equipped with the sound outlet, the inner wall of muffler body is installed with several sound absorption board, the surface of muffler body is equipped with overhaul structure, the overhaul structure includes two supports, two the support is fixedly connected with the surface of muffler body, the support is rotatably connected with the support plate, one side fixed connection of two support plates has the apron, this impedance composite muffler, through setting overhauls structure, makes the muffler when needing overhauls not needing cutting pipeline or disassembling entire muffler, greatly reduced the engineering quantity and the difficulty of overhaul, improved the overhaul efficiency, the staff can open apron quickly, checks, maintains or replaces the component to the inside, reduced the equipment downtime, reduced the maintenance cost.

Description

Technical Field

[0001] This utility model relates to the technical field of impedance composite silencers, specifically an impedance composite silencer. Background Technology

[0002] Impedance composite silencers are high-efficiency noise reduction devices that combine resistive and reactive noise reduction principles. They are widely used in noise control fields such as ventilation and air conditioning systems, industrial exhaust, internal combustion engines, and compressors. They reflect or interfere with sound waves by changing acoustic impedance (such as expansion chambers, resonant cavities, perforated plates, etc.), mainly targeting low-frequency noise (such as pulsating noise from internal combustion engines and compressors). The reactive part does not rely on sound-absorbing materials and is resistant to high temperatures and corrosion.

[0003] Impedance composite silencers are affected by various factors such as airflow, temperature, corrosion, and vibration during long-term operation. The sound-absorbing material is prone to clumping, carbonization, or falling off in humid, oily, or high-temperature environments, resulting in a decrease in mid-to-high frequency noise reduction capacity. Impedance composite silencers are usually fixed by welding or bolts, and maintenance may require cutting pipes or disassembling the entire silencer, which involves a large amount of engineering work. Therefore, we propose an impedance composite silencer. Utility Model Content

[0004] The purpose of this invention is to provide an impedance composite silencer to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an impedance composite silencer, comprising a silencer body, one end of which has a sound inlet and the other end has a sound outlet. Several sound-absorbing plates are installed on the inner wall of the silencer body. A maintenance structure is provided on the surface of the silencer body, comprising two supports, both of which are fixedly connected to the surface of the silencer body. A support plate is rotatably connected inside the supports. A cover plate is fixedly connected to one side of each support plate. A circular groove is formed on one side of the cover plate. A fixing plate is fixedly connected to the surface of the silencer body. A circular rod slides through the surface of the fixing plate. A drive plate is fixedly connected to one end of the circular rod near the cover plate. Two pins are fixedly connected to the drive plate near the cover plate. The size of the pins matches the size of the circular groove. A maintenance hole is formed on the surface of the silencer body, and the cover plate covers the maintenance hole.

[0006] The effects achieved by the above components are as follows: by setting up the maintenance structure, the silencer can be maintained without cutting pipes or disassembling the entire silencer, which greatly reduces the workload and difficulty of maintenance, improves maintenance efficiency, and allows staff to quickly open the cover to inspect, repair or replace internal parts, reducing equipment downtime and lowering maintenance costs.

[0007] Preferably, a spring is fitted onto the arc surface of the round rod, and the two ends of the spring are fixedly connected to the round rod and the fixing plate, respectively.

[0008] The effect achieved by the above components is that the spring further improves the stability of the pin inserted into the round groove, and prevents the pin from coming out of the round groove due to shaking.

[0009] Preferably, extension plates are fixedly connected to both sides of the fixed plate, and guide rods slide through the surface of the extension plates, the guide rods being fixedly connected to the drive plate.

[0010] The effects achieved by the above components are as follows: the guide rod and extension plate further enhance the stability of the drive plate movement, ensure accurate engagement between the pin and the groove, and improve the reliability of the entire maintenance structure.

[0011] Preferably, a pull rod is fixedly connected to one side of the cover plate, and the vertical cross-section of the pull rod is U-shaped.

[0012] The effect achieved by the above components is that the movement of the pull rod will cause the cover plate to move, thereby rotating the angle of the cover plate.

[0013] Preferably, the surface of the cover plate is fitted with a sealing ring, which is made of rubber.

[0014] The aforementioned components achieve the following effects: the sealing ring effectively prevents noise leakage from the inspection port, ensuring the muffler's noise reduction effect. Even under pressure changes or vibrations inside the muffler, the sealing ring maintains good sealing performance, ensuring the muffler's operational stability.

[0015] Preferably, a rectangular groove is formed on one side of the cover plate, and a rectangular plate is rotatably connected in the rectangular groove. A groove is formed on the surface of the cover plate and the rectangular plate, and a baffle is rotatably connected in the groove.

[0016] The effect achieved by the above components is that workers can easily place tools and other items on the surface of the rectangular plate, thereby facilitating the maintenance of the muffler body.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] This utility model, by setting up an inspection structure, eliminates the need to cut pipes or disassemble the entire silencer when maintenance is required, greatly reducing the workload and difficulty of maintenance, improving maintenance efficiency, and allowing staff to quickly open the cover to inspect, repair or replace internal parts, reducing equipment downtime and lowering maintenance costs. 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 structural schematic diagram of the present invention from another angle;

[0021] Figure 3 This is a schematic diagram of the maintenance structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the round rod of this utility model.

[0023] In the diagram: 1. Muffler body; 2. Sound inlet; 3. Sound outlet; 4. Muffler plate; 5. Maintenance structure; 501. Bracket; 502. Support plate; 503. Cover plate; 504. Circular groove; 505. Fixing plate; 506. Circular rod; 507. Drive plate; 508. Pin; 509. Inspection hole; 510. Spring; 511. Extension plate; 512. Guide rod; 513. Pull rod; 514. Sealing ring; 515. Rectangular groove; 516. Rectangular plate; 517. Groove; 518. Baffle. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-2This utility model provides a technical solution: an impedance composite silencer, including a silencer body 1, with a sound inlet 2 at one end and a sound outlet 3 at the other end. A plurality of sound-absorbing plates 4 are installed on the inner wall of the silencer body 1. A maintenance structure 5 is provided on the surface of the silencer body 1, including two supports 501, both supports 501 being fixedly connected to the surface of the silencer body 1. Support plates 502 are rotatably connected inside the supports 501. Cover plates 503 are fixedly connected to one side of the two support plates 502, and a circular groove 504 is formed on one side of the cover plate 503. A fixing plate 505 is fixedly connected to the surface of the silencer body 1. The surface of the fixing plate 505... A circular rod 506 slides through the silencer. A drive plate 507 is fixedly connected to one end of the circular rod 506 near the cover plate 503. Two pins 508 are fixedly connected to one side of the drive plate 507 near the cover plate 503. The size of the pins 508 matches the size of the circular groove 504. An inspection hole 509 is provided on the surface of the silencer body 1. The cover plate 503 covers the inspection hole 509. By setting the inspection structure 5, the silencer can be inspected without cutting pipes or disassembling the entire silencer, which greatly reduces the workload and difficulty of maintenance and improves maintenance efficiency. Workers can quickly open the cover plate 503 to inspect, repair or replace parts inside, reducing equipment downtime and maintenance costs.

[0026] Reference Figure 3 and Figure 4As shown in this embodiment: a spring 510 is fitted onto the arc surface of the round rod 506. The two ends of the spring 510 are fixedly connected to the round rod 506 and the fixing plate 505, respectively. The spring 510 further enhances the stability of the pin 508 inserted into the circular groove 504, preventing the pin 508 from dislodging from the groove 504 due to shaking. Extension plates 511 are fixedly connected to both sides of the fixing plate 505. A guide rod 512 slides through the surface of the extension plate 511. The guide rod 512 is fixedly connected to the drive plate 507. The arrangement of the guide rod 512 and the extension plate 511 further enhances the stability of the drive plate 507's movement, ensuring accurate engagement between the pin 508 and the circular groove 504, and improving the reliability of the entire maintenance structure 5. A pull rod 513 is fixedly connected to one side of the cover plate 503. The vertical section of the pull rod 513 is U-shaped. Moving the pull rod 513 will cause the cover plate 503 to move, thereby rotating the angle of the cover plate 503. A sealing ring 514, made of rubber, is fitted onto the surface of the cover plate 503. The sealing ring 514 effectively prevents noise leakage from the inspection hole 509, ensuring the muffler's noise reduction effect. Even under pressure changes or vibrations inside the muffler, the sealing ring 514 maintains good sealing performance, ensuring the muffler's operational stability. A rectangular groove 515 is provided on one side of the cover plate 503, within which a rectangular plate 516 is rotatably connected. A groove 517 is provided on the surfaces of the cover plate 503 and the rectangular plate 516, within which a baffle 518 is rotatably connected. This allows workers to easily place tools and other items on the surface of the rectangular plate 516, facilitating maintenance of the muffler body 1.

[0027] Working principle: When it is necessary to inspect the components inside the muffler body 1, first pull the round rod 506. At this time, the round rod 506 will move away from the cover plate 503, and at the same time drive the drive plate 507 and the pin 508 to move together. The pin 508 will disengage from the round groove 504. Then pull the pull rod 513. The pull rod 513 drives the cover plate 503 to move. Since the cover plate 503 is fixedly connected to the support plate 502, and the support plate 502 rotates in the bracket 501, the cover plate 503 will rotate around the rotation axis of the support plate 502 and the bracket 501. The cover plate 503 will rotate and gradually open, exposing the inspection hole 509, which is convenient for the staff to inspect the inside of the muffler body 1. At this time, rotate the baffle 518. The baffle 518 will rotate in the groove 517. The rotation of the baffle 518 will gradually move away from the surface of the rectangular plate 516. After 518 disengages from the rectangular plate 516, the rectangular plate 516 is rotated. The rectangular plate 516 rotates within the rectangular groove 515. When the rectangular plate 516 rotates, it becomes parallel, making it easier for workers to place tools and other items on its surface during maintenance. This facilitates maintenance of the muffler body 1. After maintenance, the cover plate 503 is pushed to rotate. When the cover plate 503 covers the inspection hole 509, the pin 508 is aligned with the circular groove 504. Then, the pull rod 513 is released. At this time, the spring 510 pushes the circular rod 506 to move closer to the cover plate 503, causing the pin 508 to insert into the circular groove 504, thereby fixing the cover plate 503 onto the muffler body 1. The sealing ring 514 on the surface of the cover plate 503 can provide a seal to prevent noise leakage from the inspection hole 509.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" 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 thereof 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 process, method, article, or apparatus.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An impedance composite silencer, comprising a silencer body (1), wherein one end of the silencer body (1) is provided with a sound inlet (2), the other end of the silencer body (1) is provided with a sound outlet (3), a plurality of sound-absorbing plates (4) are installed on the inner wall of the silencer body (1), and a maintenance structure (5) is provided on the surface of the silencer body (1), characterized in that: The maintenance structure (5) includes two brackets (501), both brackets (501) are fixedly connected to the surface of the muffler body (1), a support plate (502) is rotatably connected inside the bracket (501), a cover plate (503) is fixedly connected to one side of the two support plates (502), a circular groove (504) is opened on one side of the cover plate (503), a fixing plate (505) is fixedly connected to the surface of the muffler body (1), a circular rod (506) slides through the surface of the fixing plate (505), a drive plate (507) is fixedly connected to one end of the circular rod (506) near the cover plate (503), two pins (508) are fixedly connected to one side of the drive plate (507) near the cover plate (503), the size of the pins (508) is adapted to the size of the circular groove (504), an inspection hole (509) is opened on the surface of the muffler body (1), and the cover plate (503) covers the inspection hole (509).

2. The impedance composite silencer according to claim 1, characterized in that: A spring (510) is fitted onto the arc surface of the round rod (506), and the two ends of the spring (510) are fixedly connected to the round rod (506) and the fixing plate (505) respectively.

3. The impedance composite silencer according to claim 1, characterized in that: Both sides of the fixed plate (505) are fixedly connected to extension plates (511), and guide rods (512) slide through the surface of the extension plates (511). The guide rods (512) are fixedly connected to the drive plate (507).

4. The impedance composite silencer according to claim 1, characterized in that: A pull rod (513) is fixedly connected to one side of the cover plate (503), and the vertical cross section of the pull rod (513) is U-shaped.

5. The impedance composite silencer according to claim 1, characterized in that: The surface of the cover plate (503) is fitted with a sealing ring (514), which is made of rubber.

6. The impedance composite silencer according to claim 1, characterized in that: A rectangular groove (515) is provided on one side of the cover plate (503), and a rectangular plate (516) is rotatably connected in the rectangular groove (515). A groove (517) is provided on the surface of the cover plate (503) and the rectangular plate (516), and a baffle (518) is rotatably connected in the groove (517).

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