Pressure gas silencing box

Abstract

The utility model discloses a pressure gas noise reduction box, which relates to the technical field of noise reduction, and comprises a box body, a shell and a lower shell which are assembled together in an up-down opposite manner to form a hollow cavity, a quick joint is positioned at one end inside the lower shell and is connected with one end of a noise reduction pipe, the radial outer wall of the noise reduction pipe is provided with pores, and the other end of the noise reduction pipe is plugged with a plug. The outer wall of the noise reduction pipe is fixedly sleeved with the buffering hollow bag, the radial side wall of the noise reduction pipe is provided with air holes communicating with the buffering hollow bag, and the inner space of the buffering hollow bag is used for buffering high-pressure gas entering the noise reduction pipe. Space in the noise reduction pipe and the buffering hollow bag serves as a noise reduction place, noise and pressure gas enter the noise reduction pipe, noise waves collide with the tiny pore structures at a high speed when passing through the pipe wall, sound energy of the noise waves is converted into mechanical energy of vibration in the pipe, the noise speed is reduced, and noise reduction is achieved. The internal space of the buffering hollow bag is used for buffering high-pressure gas entering the noise reduction pipe, and the noise reduction pipe is prevented from bursting due to the fact that the pressure intensity of noise gas is too large.

Description

Technical Field

[0001] This utility model relates to the field of noise reduction technology, specifically a pressure gas noise reduction box. Background Technology

[0002] Silencers are devices that reduce noise by minimizing the rapid and direct transmission of sound waves. They are widely used in the airflow channels of aerodynamic equipment or in the intake and exhaust systems to reduce noise. Silencers are designed using sound-absorbing materials according to different silencing principles, and are manufactured from materials such as plastic, copper, and stainless steel.

[0003] Currently, there are various types of silencers on the market, but based on their noise reduction mechanisms, they can be divided into six main types: resistive silencers, reactive silencers, impedance composite silencers, micro-perforated plate silencers, small-hole silencers, and active silencers. Different types of silencers have certain limitations in noise reduction across different frequency bands (high-frequency, mid-frequency, and low-frequency), and mainly suffer from the following drawbacks: 1. Insignificant noise reduction, easily causing blockages and hindering exhaust flow, affecting normal equipment operation; 2. High energy loss, reducing equipment operating efficiency and increasing operating costs; 3. Shortened equipment lifespan. Utility Model Content

[0004] The purpose of this utility model is to provide a pressurized gas silencer box, a high-efficiency pressurized gas silencer box, which can effectively reduce noise in different frequency bands of high frequency, medium frequency, and low frequency, significantly reduce noise, improve the environment, and has low energy loss, high equipment operating efficiency, and long equipment service life, so as to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a pressurized gas silencer box, comprising:

[0006] The box body includes an upper shell and a lower shell, which are assembled together facing each other to form a hollow cavity.

[0007] The noise reduction tube has a hole on its radial outer wall. A quick connector is fixedly inserted into one side wall of the lower housing. One end of the quick connector is located inside the lower housing and is connected to one end of the noise reduction tube. The other end of the noise reduction tube is plugged with a plug.

[0008] A buffer hollow bladder is fixedly sleeved on the outer wall of the noise reduction tube. The radial side wall of the noise reduction tube has a vent hole that communicates with the buffer hollow bladder. The internal space of the buffer hollow bladder is used to buffer the high-pressure gas entering the noise reduction tube.

[0009] In a further embodiment, the lower housing is provided with fixing holes at all four corners, and the upper housing is provided with threaded grooves at all four corners at the bottom. A self-tapping screw is inserted into the fixing hole, and the end of the self-tapping screw passes through the fixing hole and is threadedly connected to the threaded groove.

[0010] In a further embodiment, a lower covering layer is laid on the bottom wall of the lower housing, the lower covering layer is located at the lower end of the noise reduction tube and the buffer hollow bladder, and an upper covering layer is covered at the upper end of the noise reduction tube and the buffer hollow bladder.

[0011] Both the upper cover layer and the upper cover layer have a mesh structure.

[0012] In a further embodiment, the buffer hollow bladder is filled with silk coils.

[0013] In a further embodiment, multiple diffusion holes are provided on the opposite side walls of the lower housing.

[0014] In a further embodiment, mounting plates are provided on the bottom ends of the opposite sides of the lower housing, and mounting holes are provided on the mounting plates.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This invention relates to a pressurized gas silencing box. The noise-reducing tube and the space inside the buffer hollow bladder serve as the noise reduction environment. Noise and pressurized gas enter the noise-reducing tube. When noise waves pass through the tube wall, they collide at high speed with the micropore structure, converting the sound energy of the noise waves into the mechanical energy of the vibration within the tube, thus reducing the noise velocity. The space inside the buffer hollow bladder buffers the high-pressure gas entering the noise-reducing tube, preventing excessive gas pressure from causing the tube to burst. Part of the sound energy is converted into vibration of the noise-reducing tube, and part is diffused, eliminating most of the noise. When the residual sound wave frequency passes through the pores of the noise-reducing tube and enters the box, it matches the natural frequency of the air inside the box, forming resonance and producing a specific frequency, thereby further achieving the purpose of noise reduction. The gas is discharged through the pre-reserved diffusion holes on the shell, ultimately achieving a rapid noise reduction effect. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the main structure of an embodiment of the present utility model;

[0018] Figure 2 This is a schematic diagram showing the disassembled main structure of an embodiment of the present utility model;

[0019] Figure 3 This is a cross-sectional view of the noise reduction tube and the buffer hollow bladder structure according to an embodiment of the present invention.

[0020] In the diagram: 1. Upper shell; 2. Lower shell; 21. Mounting plate; 22. Diffuser hole; 23. Fixing hole; 24. Quick connector; 3. Upper cover layer; 31. Lower cover layer; 4. Noise reduction tube; 41. Buffer hollow bladder; 42. Plug; 43. Threaded coil; 44. Vent hole. Detailed Implementation

[0021] 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.

[0022] This embodiment provides a pressurized gas silencer box, comprising:

[0023] The enclosure comprises an upper shell 1 and a lower shell 2. The lower shell 2 has fixing holes 23 at each of its four corners, and the upper shell 1 has threaded grooves at each of its four corners. Self-tapping screws are inserted into the fixing holes 23. The upper shell 1 and lower shell 2 are aligned vertically and fitted together. The ends of the self-tapping screws pass through the fixing holes 23 and are threaded into the threaded grooves, forming a hollow cavity within the enclosure to provide a sound-absorbing space. Figure 1 As shown, mounting plates 21 are provided on both opposite sides of the bottom of the lower housing 2, and mounting holes are provided on the mounting plates 21. The mounting plates 21 are fixedly installed by passing bolts through the mounting holes, thereby fixing the entire housing.

[0024] like Figure 2 As shown, a quick connector 24 is fixedly inserted into one side wall of the lower housing 2 of the noise-reducing tube 4. One end of the quick connector 24 located inside the lower housing 2 connects to one end of the noise-reducing tube 4, while the other end located outside the lower housing 2 connects to the output end of the high-pressure gas equipment. A plug 42 is inserted into the other end of the noise-reducing tube 4. The noise-reducing tube 4 serves as the primary site for high-pressure noise reduction. Specifically, pores are formed on the radial outer wall of the noise-reducing tube 4. The equipment discharges pressurized gas with noise into the noise-reducing tube 4. When the noise wave passes through the tube wall of the noise-reducing tube 4, it collides at high speed with the micropore structure, converting the sound energy of the noise wave into the mechanical energy of the vibration inside the tube, thus reducing the noise velocity. Simultaneously, the noise waves repeatedly collide and bounce through the internal structure of the micropore structure, forming sound waves in different directions. When two sound waves in opposite directions collide, their energy is mutually lost and consumed, and sound waves in other directions also diffuse with reduced energy. Subsequently, the noise enters the box through the microporous structure, where it is converted into vibrational mechanical energy. Some of the noise energy is lost or diffused, thus greatly reducing the noise energy and speed.

[0025] In this embodiment, a further component includes a buffer hollow bladder 41, which is fixedly sleeved on the outer wall of the noise-reducing tube 4. The radial sidewall of the noise-reducing tube 4 has a vent hole 44 communicating with the buffer hollow bladder 41. High-pressure noise gas entering the noise-reducing tube 4 enters the buffer hollow bladder 41 through the vent hole 44. The internal space of the buffer hollow bladder 41 is used to buffer the high-pressure gas entering the noise-reducing tube 4. The buffer hollow bladder 41 is made of rubber. When the high-pressure noise gas enters the buffer hollow bladder 41, the pressure inside the buffer hollow bladder 41 increases, and subsequently, the buffer hollow bladder 41 undergoes expansion deformation, thereby buffering the pressure of the high-pressure noise gas and preventing the noise-reducing tube 4 from bursting due to a sudden increase in noise gas pressure. A wire coil 43 is filled inside the buffer hollow bladder 41, such as... Figure 3 As shown, the coil 43 fills the entire buffer hollow bladder 41. Noise enters the buffer hollow bladder 41 and collides and bounces on the surface of the coil 43, forming sound waves in different directions. When two sound waves in opposite directions collide, their energy is lost and consumed, which can further enhance the noise reduction effect.

[0026] In addition, a lower covering layer 31 is laid on the bottom wall of the lower shell 2. The lower covering layer 31 is located at the lower end of the noise reduction tube 4 and the buffer hollow bladder 41, and the upper end of the noise reduction tube 4 and the buffer hollow bladder 41 is covered by an upper covering layer 3. Both the upper covering layer 3 and the upper covering layer 4 are mesh structures. The mesh structure material is treated with a hydrophobic and oleophobic process. Because the mesh structure is treated with a hydrophobic and oleophobic process, even the smallest oil stains in the gas cannot adhere to its surface. For example, PVC plastic injection molding or sponge cut into a mesh structure both have sound absorption functions. The upper covering layer 3 wraps around the noise reduction tube 4 and the buffer hollow bladder 41, which can attract and reduce noise. At the same time, multiple diffusion holes 22 are opened on the opposite side walls of the lower shell 2. The residual noise is then distributed into the box body through the mesh structure material and discharged through the diffusion holes 22 on the lower shell 2, thus achieving the purpose of noise reduction. The buffer hollow bladder 41 can be a spherical structure, a cylindrical structure, or other shapes.

[0027] 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. A pressurized gas silencer box, characterized in that, include: The box body includes an upper shell (1) and a lower shell (2), which are assembled together facing each other to form a hollow cavity; The noise reduction tube (4) has a hole on its radial outer wall. A quick connector (24) is fixedly inserted into the side wall of one end of the lower housing (2). The quick connector (24) is located inside the lower housing (2) and is connected to one end of the noise reduction tube (4). The other end of the noise reduction tube (4) is plugged with a plug (42). A buffer hollow bladder (41) is fixedly sleeved on the outer wall of the noise reduction tube (4). The radial side wall of the noise reduction tube (4) is provided with a vent hole (44) communicating with the buffer hollow bladder (41). The internal space of the buffer hollow bladder (41) is used to buffer the high-pressure gas entering the noise reduction tube (4).

2. The pressurized gas silencer box according to claim 1, characterized in that, The lower housing (2) has fixing holes (23) at all four corners, and the upper housing (1) has threaded grooves at all four corners at the bottom. A self-tapping screw is inserted into the fixing hole (23), and the end of the self-tapping screw passes through the fixing hole (23) and is threaded into the threaded groove.

3. The pressure gas silencer box according to claim 1, characterized in that, The lower shell (2) has a lower cover layer (31) laid on the bottom wall. The lower cover layer (31) is located at the lower end of the noise reduction tube (4) and the buffer hollow bladder (41). The upper end of the noise reduction tube (4) and the buffer hollow bladder (41) is covered by an upper cover layer (3). Both the upper cover layer (3) and the upper cover layer (3) are mesh structures.

4. The pressure gas silencer box according to claim 1, characterized in that, The buffer hollow bladder (41) is filled with a silk coil (43).

5. The pressure gas silencer box according to claim 1, characterized in that, Multiple diffusion holes (22) are provided on the opposite side walls of the lower housing (2).

6. The pressure gas silencer box according to claim 1, characterized in that, The lower housing (2) is provided with mounting plates (21) on both opposite sides of the bottom end, and mounting holes are provided on the mounting plates (21).

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