A pneumatic muffler housing

Abstract

The utility model relates to the technical field of pneumatic muffler, disclose a pneumatic muffler shell, including the shell body, the both ends of shell body are installed with end cover one and end cover two respectively, the outer wall one side of end cover no.

Description

Technical Field

[0001] This utility model relates to the field of pneumatic muffler technology, and in particular to a pneumatic muffler housing. Background Technology

[0002] In modern industrial production, pneumatic equipment is widely used due to its advantages such as high efficiency and cleanliness. However, the pneumatic noise generated during operation has a serious impact on the health of operators and the working environment. As a key device for noise reduction, the pneumatic silencer's housing not only protects the internal sound-absorbing structure but also significantly affects its sound-absorbing performance and ease of installation. With the development of industrial automation and intelligence, higher requirements are being placed on the functionality and installation efficiency of the pneumatic silencer housing.

[0003] Traditional pneumatic muffler housings are typically installed using mechanical structures such as bolt fastening or flange connections. Bolting requires pre-machining multiple bolt holes on both the workpiece and the muffler housing, then tightening the bolts one by one to achieve a secure connection. Flange connections require bolting the muffler housing to the corresponding flange, and then fixing the flange to the workpiece. These installation methods rely on specific tools and relatively complex procedures, and their technical principle is based on mechanical fastening force to ensure the stability of the connection.

[0004] However, traditional pneumatic muffler housings typically use bolts and flange connections. In practical industrial applications, the installation process often requires a significant amount of time for tasks such as aligning bolt holes and tightening bolts. This is especially problematic in space-constrained environments or where frequent disassembly and reassembly are necessary, greatly increasing the operational difficulty and severely impacting installation efficiency. Furthermore, the complex installation steps not only increase labor costs but also raise the risk of muffler performance degradation due to improper installation, making it difficult to meet the demands of modern industry for rapid assembly and flexible adjustments. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a pneumatic muffler housing, which aims to improve the problem that traditional pneumatic muffler housings usually use bolt fastening and flange connection. In actual industrial applications, the installation process often requires a lot of time to perform operations such as aligning bolt holes and tightening bolts. Especially in situations where space is limited or frequent disassembly and assembly are required, the operation difficulty increases significantly, affecting the installation efficiency.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a pneumatic muffler housing, comprising a housing body, with end cap one and end cap two respectively installed at both ends of the housing body, a connector fixedly connected to one side of the outer wall of end cap one, and an installation component provided inside the connector;

[0007] The mounting assembly includes a snap-fit ​​connector and an adapter. The outer wall of the adapter is rotatably connected to the interior of the connector. A rotating shaft is rotatably connected inside the adapter, and torsion springs are sleeved on both sides of the outer wall of the rotating shaft.

[0008] Furthermore, a support ring is fixedly connected to the inner wall of the outer shell, and an inner shell is fixedly connected to the inner wall of the support ring. The inner shell has multiple diffusion holes inside, and multiple oblique guide vanes are fixedly connected to the inner wall of the inner shell. Sealing components are provided inside both end cap one and end cap two.

[0009] Furthermore, the sealing assembly includes a first sealing ring and a second sealing ring, which are respectively installed inside the first end cap and the second end cap, and a protective plug is fixedly connected inside the first sealing ring and the second sealing ring.

[0010] Furthermore, multiple inclined guide vanes are fixedly connected to the inner wall of the inner shell at different angles, and the hollow through holes inside them are oriented in the same direction.

[0011] Furthermore, the diffusion holes are arranged in a ring array inside the inner housing.

[0012] Furthermore, both ends of the rotating sleeve are rotatably connected inside the connector.

[0013] Furthermore, one end of the torsion spring is fixedly connected to the inside of the adapter, and the other end of the torsion spring is fixedly connected to the inside of the connector.

[0014] Furthermore, the two protective plugs are respectively disposed at both ends of the outer shell and the inner shell.

[0015] This utility model has the following beneficial effects:

[0016] 1. In this utility model, during installation, the connector only needs to be inserted into the workpiece. The snap-fit ​​connector is squeezed and rotates on the shaft, cooperating with the torsion spring. After the connector is in place, the spring rebounds, so that the snap-fit ​​connector automatically snaps onto the outer wall of the workpiece. No complicated tools and cumbersome operations are required, which significantly improves the installation efficiency, reduces the installation difficulty and labor costs, and is suitable for rapid assembly needs under various working conditions.

[0017] 2. In this invention, the oblique guide vanes create a swirling flow to reduce turbulent noise, while the diffuser holes cause multiple reflections of the sound waves, dissipating energy. The impedance-mismatched double-layer cavity formed by the outer and inner shells further attenuates the sound waves. The sealing ring and protective plug inside the end cap ensure airtightness and prevent impurities from entering. The synergistic effect of these multiple structures effectively enhances the silencer's ability to eliminate noise at different frequencies, ensuring stable equipment operation and providing a reliable solution for industrial noise reduction. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of a pneumatic muffler housing proposed in this utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of the outer shell of a pneumatic muffler according to the present invention;

[0020] Figure 3 This is a schematic diagram of the internal structure of the connecting part of the pneumatic muffler housing proposed in this utility model;

[0021] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0022] Figure 5 This is a schematic diagram of the internal structure of the inner shell of a pneumatic muffler according to the present invention.

[0023] Legend:

[0024] 1. Outer shell; 2. End cap one; 3. End cap two; 4. Connector; 5. Snap connector; 6. Rotating sleeve; 7. Rotating shaft; 8. Torsion spring; 9. Adapter; 10. Sealing ring one; 11. Sealing ring two; 12. Inner shell; 13. Support ring; 14. Diffuser hole; 15. Angled guide vane; 16. Protective plug. Detailed Implementation

[0025] 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.

[0026] Reference Figures 1-5 The present invention provides an embodiment of a pneumatic muffler housing, comprising a housing body 1, with end cap 2 and end cap 3 respectively installed at both ends of the housing body 1, and a connector 4 fixedly connected to one side of the outer wall of end cap 2, with an installation component provided inside the connector 4.

[0027] The mounting assembly includes a snap-fit ​​connector 5 and an adapter 9. The outer wall of the adapter 9 is rotatably connected to the inside of the connector 4. A rotating shaft 7 is rotatably connected inside the adapter 9. Torsion springs 8 are sleeved on both sides of the outer wall of the rotating shaft 7. Both ends of the rotating sleeve 6 are rotatably connected to the inside of the connector 4. One end of the torsion spring 8 is fixedly connected to the inside of the adapter 9, and the other end of the torsion spring 8 is fixedly connected to the inside of the connector 4.

[0028] Specifically, the connector 4 at one end of the outer casing 1 is aligned with and inserted into the pre-drilled mounting hole on the workpiece. When the connector 4 is inserted, the arc-shaped outer wall of the snap-fit ​​connector 5 contacts the inner wall of the workpiece. As the connector 4 continues to penetrate deeper, the pressure exerted by the inner wall of the workpiece on the snap-fit ​​connector 5 causes the adapter 9 to rotate around the pivot 7. The torsion spring 8 is tightly fitted around the pivot 7, and it undergoes torsional deformation and accumulates elastic potential energy simultaneously when the snap-fit ​​connector 5 rotates. When the snap-fit ​​connector 5 rotates to a specific angle, the connector 4 can be fully inserted into place. At this time, as the external pressure disappears, the torsion spring 8 quickly releases its elastic potential energy and rebounds, causing the adapter 9 and snap-fit ​​connector 5 to reset. The hook-shaped end of the snap-fit ​​connector 5 precisely engages in the groove on the outer wall of the workpiece, forming a firm mechanical lock. This can be completed with one hand, greatly improving installation efficiency and convenience.

[0029] Reference Figures 1-5 A support ring 13 is fixedly connected to the inner wall of the outer shell 1. An inner shell 12 is fixedly connected to the inner wall of the support ring 13. Multiple diffuser holes 14 are located inside the inner shell 12. Multiple oblique guide vanes 15 are fixedly connected to the inner wall of the inner shell 12. Sealing components are provided inside the end cap 2 and the end cap 3. The sealing components include a sealing ring 10 and a sealing ring 11. The sealing ring 10 and the sealing ring 11 are respectively installed inside the end cap 2 and the end cap 3. Protective plugs 16 are fixedly connected inside the sealing ring 10 and the sealing ring 11. Multiple oblique guide vanes 15 are fixedly connected to the inner wall of the inner shell 12 at different angles. The hollow through holes inside them are oriented in the same direction. Multiple diffuser holes 14 are arranged in a ring array inside the inner shell 12. Two protective plugs 16 are respectively located at both ends of the outer shell 1 and the inner shell 12.

[0030] Specifically, when the airflow enters the inner shell 12, it first comes into contact with the inclined guide vanes 15 at different angles, with inclination angles ranging from 0° to 90°. These guide the airflow to form an orderly spiral flow, effectively reducing the turbulence intensity inside the airflow and reducing the generation of turbulence noise. At the same time, the diffuser holes 14 distributed in a ring array on the inner shell 12 allow sound waves to be reflected multiple times within the holes. Through the friction and reflection between the sound waves and the hole walls, the sound energy is converted into heat energy for dissipation. The outer shell 1 and the inner shell 12 are connected by a support ring 13. In addition, the sealing rings 10 and 11 inside the end caps 2 and 3 can tightly fit the end faces of the outer shell 1 and the inner shell 12, forming an airtight space. The protective plug 16 is installed at the reserved hole in the end cap and adopts a dustproof and waterproof design, which can effectively prevent external impurities and moisture from entering the silencer, ensuring the stable operation of each component and ultimately achieving efficient noise elimination.

[0031] Working principle: When the pneumatic muffler housing is needed, first insert the connector 4 at one end of the housing 1 into the outer wall of the workpiece to be installed. At this time, the movement of the connector 4 will cause the outer wall of the clamping connector 5 to contact the workpiece, thereby applying pressure to the clamping connector 5. This causes the clamping connector 5 to drive the adapter 9 to rotate around the rotating shaft 7. At the same time, the torsion spring 8 is twisted. When the clamping connector 5 moves to a certain angle, the connector 4 can be fully installed. When the connector 4 has moved completely to one side of the workpiece, the torsion spring 8 is no longer under force and rebounds, thereby driving the adapter 9 and the clamping connector 5 to reset. This allows one end of the clamping connector 5 to engage with the outer wall of the workpiece, achieving quick installation of the muffler.

[0032] In addition, after the airflow enters the inner shell 12, it forms a swirling flow through the inclined guide vanes 15 at different angles to reduce turbulent noise. At the same time, the sound waves are reflected multiple times and energy is dissipated through the diffuser holes 14 distributed in a ring array. The outer shell 1 and the inner shell 12 are connected by the support ring 13 to form a double-layer cavity with impedance mismatch, which further attenuates the sound waves. The sealing ring 10, sealing ring 11 and protective plug 16 in the end cap 1 2 and end cap 2 3 ensure airtightness and prevent impurities from entering, ultimately achieving efficient broadband noise reduction and stable operation.

[0033] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pneumatic muffler housing, comprising a housing body (1), characterized in that: The outer shell (1) is equipped with end cap one (2) and end cap two (3) respectively. A connector (4) is fixedly connected to one side of the outer wall of end cap one (2). An installation component is provided inside the connector (4). The mounting assembly includes a snap-fit ​​connector (5) and an adapter (9). The outer wall of the adapter (9) is rotatably connected to the inside of the connector (4). The inside of the adapter (9) is rotatably connected to a rotating shaft (7). Both sides of the outer wall of the rotating shaft (7) are fitted with torsion springs (8).

2. The pneumatic muffler housing according to claim 1, characterized in that: The inner wall of the outer shell (1) is fixedly connected to a support ring (13), the inner wall of the support ring (13) is fixedly connected to an inner shell (12), the inner shell (12) has multiple diffuser holes (14) inside, the inner wall of the inner shell (12) is fixedly connected to multiple oblique guide vanes (15), and the inner walls of the end cap one (2) and end cap two (3) are both provided with sealing components.

3. The pneumatic muffler housing according to claim 2, characterized in that: The sealing assembly includes a sealing ring one (10) and a sealing ring two (11). The sealing ring one (10) and the sealing ring two (11) are respectively installed inside the end cap one (2) and the end cap two (3). The interior of the sealing ring one (10) and the sealing ring two (11) is fixedly connected with a protective plug (16).

4. The pneumatic muffler housing according to claim 3, characterized in that: Multiple inclined guide vanes (15) are fixedly connected to the inner wall of the inner shell (12) at different angles, and the hollow through holes inside them are in the same direction.

5. The pneumatic muffler housing according to claim 3, characterized in that: Multiple diffusion holes (14) are arranged in a ring array inside the inner housing (12).

6. The pneumatic muffler housing according to claim 1, characterized in that: Both ends of the rotating sleeve (6) are rotatably connected inside the connector (4).

7. The pneumatic muffler housing according to claim 1, characterized in that: One end of the torsion spring (8) is fixedly connected to the inside of the adapter (9), and the other end of the torsion spring (8) is fixedly connected to the inside of the connector (4).

8. A pneumatic muffler housing according to claim 3, characterized in that: The two protective plugs (16) are respectively disposed at both ends of the outer shell (1) and the inner shell (12).

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