CN218119068U

CN218119068U - Assembled silencing device

Info

Publication number: CN218119068U
Application number: CN202222496517.7U
Authority: CN
Inventors: 任波宇; 刘孝晨
Original assignee: Henan Yuanhang Sound Insulation Material Technology Co ltd
Current assignee: Henan Yuanhang Sound Insulation Material Technology Co ltd
Priority date: 2022-09-21
Filing date: 2022-09-21
Publication date: 2022-12-23
Anticipated expiration: 2032-09-21

Abstract

The utility model discloses an assembly type silencing device, which can effectively solve the problem that impact force is transmitted to a pipeline, so that the pipeline vibrates to generate noise; the device is arranged at the outlet position of fan power equipment, the number of the adopted silencing tubes is three, the silencing tubes are vertically and uniformly arranged, the number of the assembly tubes to be adopted is four, one silencing tube is arranged between the two assembly tubes, a vertical pipeline is formed after the assembly of the assembly tubes and the silencing tubes is completed, an air inlet is arranged below the pipeline, an air outlet is arranged above the pipeline, the air inlet is connected to the fan power equipment, and the air outlet is connected to a gas transmission pipeline. Has the advantages that: the silencing barrel in the device consists of a mounting disc and a barrel body, the barrel body receives the impact force of wind, then the impact force is transmitted to the mounting disc, the mounting disc is stressed to vibrate, the vibration force can be transmitted to the vibration reduction ring, and the vibration force generated by the mounting disc is absorbed by the arrangement of the upper ring and the lower ring; prevent the vibration of the assembly pipe from generating noise, and achieve the effect of noise elimination.

Description

Assembled silencing device

Technical Field

The utility model relates to an assembled silencing device belongs to the amortization equipment field.

Background

For the reason of the noise generation of the gas pipeline: according to the sound vibration coupling experiment, when high-pressure high-speed gas passes through the thin pipeline, the correlation between the vibration of the surface of the thin pipeline and the surface sound radiation is relatively large, and the common frequency components of the sound pressure spectrum and the vibration frequency spectrum of the thin pipeline are more, which indicates that the surface vibration of the thin pipeline is the reason causing the surface sound radiation, namely the reason of generating noise; and the transmission of the airflow sound in the duct is not the main cause of noise.

The noise reduction mode of the thin pipeline can adopt sound insulation, sound absorption, vibration isolation, damping vibration attenuation and noise reduction principles and the like; the corresponding mode is that the outside of the pipeline is bound, the inside of the pipeline adopts sound-absorbing cotton or sound-insulating damping paint is coated on the inner wall of the pipeline.

The Chinese utility model patent publication No. CN214588012U discloses a specific structure of a vibration isolation and noise reduction mode in a silencer for a gas storage tank, which comprises a shell and a silencing component arranged in the shell; the shell comprises an air inlet, an air outlet and an inner space formed by the shell and used for placing the silencing component; the silencing assembly comprises a plurality of partition plates, a silencing barrel is arranged between every two adjacent partition plates, two ends, in contact with the partition plates, of the silencing barrel are of an open structure, a first vent hole is formed in the side wall of the silencing barrel, and a second vent hole is formed in each partition plate.

Although the equipment ensures that the high-speed airflow consumes energy step by step through the layers of partition plates and expands step by step to form a vortex to slow down the impact speed, the impact force is greatly reduced when the rear end of the silencer is discharged, and the noise generated by the airflow of the pipeline is obviously reduced;

however, the impact force of the airflow on the partition plate and the silencing cylinder arranged in the device can be still transmitted to the pipeline, and the noise suppression effect of only reducing the flow velocity of the airflow on the vibration of the surface of the pipeline is not high under the condition of not changing the thickness and the material of the pipeline.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an assembled silencing device can effectively solve the impact force conduction and give the pipeline, leads to the pipeline to take place the problem that the vibration produced the noise.

In order to solve the technical problem, the utility model discloses a realize through following technical scheme:

the silencer comprises at least two assembling pipes and a silencing tube arranged between the assembling pipes; the silencing barrel comprises a mounting disc and a conical barrel body integrally formed with the mounting disc; the mounting disc is arranged between the two assembling pipes and is fixed with the assembling pipes through bolts; the mounting disc is further provided with a vibration damping ring, and the vibration damping ring is divided into an upper ring arranged on the upper end face of the mounting disc and a lower ring arranged on the lower end face of the mounting disc.

Further: the two assembling pipes are clamped on the upper end surface and the lower end surface of the mounting plate, and the cylinder body is arranged in the assembling pipe; the assembly pipe is butted to form a pipeline which is provided with an air inlet end and an air outlet end.

Further: the upper ring and the lower ring are made of rubber materials; the cross sections of the upper ring and the lower ring are right-angle plates, the lower end surface of the upper ring is bonded to the upper end surface of the mounting disc, and the side surface of the upper ring is bonded to the outer surface of the assembly pipe; the upper end face of the lower ring is bonded to the upper end face of the mounting disc, and the side face of the lower ring is bonded to the outer surface of the mounting tube.

Preferably: slots penetrating through the upper end face and the lower end face of the mounting disc are evenly distributed on the circumference of the mounting disc, and inserting plates matched with the slots are arranged on the lower end face of the upper ring.

Further: the inserting plate and the upper ring are integrally formed, and the lower end face of the inserting plate is bonded with the upper end face of the lower ring.

Preferably: the outer ring of the mounting disc is provided with a sleeve, and the sleeve is fixed on the outer surface of the assembling pipe.

Preferably: an installation space is formed between the sleeve and the assembling pipe, and the damping ring and part of the installation disc are arranged in the installation space.

Preferably: the middle part of the side wall of the cylinder body is inwards sunken to form a cambered surface.

Further: the whole barrel is horn-shaped.

Preferably: a plurality of through holes are uniformly distributed on the side wall of the cylinder body, and the axes of the through holes are vertical to the side wall of the cylinder body.

Preferably: and mounting rings are arranged at two ports of the assembling pipe.

The beneficial effects are that:

the silencing barrel in the device consists of a mounting disc and a barrel body, the barrel body receives the impact force of wind, then the impact force is transmitted to the mounting disc, the mounting disc is stressed to vibrate, the vibration force can be transmitted to the vibration reduction ring, and the vibration force generated by the mounting disc is absorbed by the arrangement of the upper ring and the lower ring; prevent the vibration of the assembly pipe from generating noise, and achieve the effect of noise elimination.

Drawings

For ease of illustration, the invention is described in detail by the following detailed description and accompanying drawings.

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a cross-sectional view of the present invention;

FIG. 3 is an enlarged view taken at A in FIG. 2;

FIG. 4 is a part view of the silencing pot and the damping ring of the present invention;

fig. 5 is a comparison diagram after the air flow impacts the inclined plane and the curved surface.

Description of reference numerals:

1. assembling a pipe; 2. a silencing barrel; 3. mounting a disc; 4. a barrel; 5. a vibration damping ring; 6. ring fitting; 7. a lower ring; 8. inserting slots; 9. inserting plates; 10. a through hole; 11. a mounting ring; 12. a sleeve.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

Referring to fig. 1-5, an embodiment of a fabricated silencer according to the present invention,

theoretically, the noise of the gas pipeline mainly comes from vibration, and in actual use, the gas pipeline can be forced to vibrate to generate noise, aerodynamic noise can be generated at the air port due to airflow change, and for a shorter air pipe air port, mechanical noise generated by operation of a fan can be radiated from the air port due to the fact that the air pipe air port is closer to a fan power device.

The device is installed at the outlet position of fan power equipment, the number of the silencing tubes 2 is three, the silencing tubes are vertically and uniformly arranged, the number of the assembly tubes 1 to be adopted is four, one silencing tube 2 is arranged between the two assembly tubes 1, after the assembly of the assembly tubes 1 and the silencing tubes 2 is completed, a vertical pipeline is formed, an air inlet is formed below the pipeline, an air outlet is formed above the pipeline, the air inlet is connected to the fan power equipment, and the air outlet is connected to the air transmission pipeline.

When the fan power equipment is started, the wind power impacts the silencing cylinder 2, and due to the unique design of the silencing cylinder 2, the wind speed is reduced by the sound of a vortex formed between the outer wall of the silencing cylinder 2 and the inner wall of the assembly pipe 1 and the blocking of the cylinder wall of the silencing cylinder 2; however, the total wind force impact force is not greatly changed, and the impact force is transmitted to the assembly pipe 1 after acting on the silencing tube 2, so that the assembly pipe 1 can vibrate and generate large noise; the silencing barrel 2 in the device consists of a mounting disc 3 and a barrel body 4, the barrel body 4 receives the impact force of wind, then the impact force is transmitted to the mounting disc 3, the mounting disc 3 vibrates under the stress, the vibration force can be transmitted to a vibration damping ring 5, and the vibration force generated by the mounting disc 3 is absorbed by the arrangement of an upper ring 6 and a lower ring 7; the assembly pipe 1 is prevented from vibrating to generate noise, and the effect of noise elimination is achieved.

Mechanical vibration of the fan is also transmitted to the assembly pipe 1, the assembly pipe 1 is transmitted to the mounting plate 3 for use, and the upper ring 6 and the lower ring 7 can absorb the mechanical vibration similarly.

The upper ring 6 and the lower ring 7 are made of rubber; the cross sections of the upper ring 6 and the lower ring 7 are right-angle plates, the lower end surface of the upper ring 6 is bonded to the upper end surface of the mounting disc 3, and the side surface of the upper ring 6 is bonded to the outer surface of the mounting tube 1; the upper end surface of the lower ring 7 is bonded to the upper end surface of the mounting plate 3, and the side surface of the lower ring 7 is bonded to the outer surface of the mounting pipe 1.

The upper ring 6 and the lower ring 7 can absorb the vibration force from the mounting plate 3 well according to the material and shape of the upper ring 6 and the lower ring 7.

Slots 8 penetrating through the upper end face and the lower end face of the mounting disc 3 are uniformly distributed on the circumference of the mounting disc 3, and inserting plates 9 matched with the slots 8 are arranged on the lower end face of the upper ring 6; the inserting plate 9 and the upper ring 6 are integrally formed, and the lower end face of the inserting plate 9 is bonded with the upper end face of the lower ring 7.

The arrangement of the slot 8 and the inserting plate 9 can increase the connection between the upper ring 6 and the lower ring 7, so that the upper ring 6 and the lower ring 7 can form a whole body for absorbing the vibration force of the mounting disc 3, and the effect of absorbing the vibration force of the vibration damping ring 5 is improved.

The mounting plate 3 is provided with a sleeve 12 on its outer periphery, and the sleeve 12 is fixed to the outer surface of the assembly pipe 1.

The sleeve 12 is used for connecting the assembly pipe 1 positioned at the air outlet position and the air inlet position and all the mounting discs 3; this can improve the effect of the entire vibration resistance of the device.

An installation space is formed between the sleeve 12 and the assembly pipe 1, and the damping ring 5 and part of the installation disc are arranged in the installation space.

The middle part of the side wall of the cylinder body 4 is inwards sunken to form a cambered surface; the barrel 4 is horn-shaped as a whole.

The area of the cambered surface of the cylinder 4 is larger than that of the inclined surface, the area of the borne wind impact is large, and on the other hand, a vortex is easily formed between the side surface of the cylinder 4 and the inner wall of the assembly pipe 1.

A plurality of through holes 10 are uniformly distributed on the side wall of the cylinder body 4, and the axes of the through holes 10 are vertical to the side wall of the cylinder body 4.

The function of the through hole 10 can ensure that the normal transmission of wind power is not influenced under the condition that the noise of the device is reduced.

The fitting pipe 1 is provided with mounting rings 11 at both ends.

The mounting ring 11 functions to fix the mounting plate 3 and the mounting pipe 1.

And adopting the pipeline after vibration isolation treatment, and performing sound insulation wrapping treatment. It is common practice to coat the assembly pipe 1 with a multilayer material consisting of sound absorbing cotton, sound-deadening felt, and corrosion-resistant metal skin. At the corner of the ventilation pipeline, a silencing elbow is used, at the diversion position of the pipeline, a silencing static pressure box is used, and a silencer is additionally arranged at an air port.

The above description is only for the specific embodiment of the present invention, but the technical features of the present invention are not limited thereto, and any person skilled in the art can make changes or modifications within the scope of the present invention.

Claims

1. An assembled silencing device, characterized in that: comprises at least two assembling pipes (1) and a silencing tube (2) arranged between the assembling pipes (1); the silencing barrel (2) comprises a mounting disc (3) and a conical barrel body (4) which is integrally formed with the mounting disc (3); the mounting plate (3) is arranged between the two assembly pipes (1); still be provided with damping ring (5) on mounting disc (3), damping ring (5) divide into the setting and are in upper ring (6) and the setting of mounting disc (3) up end are in lower ring (7) of terminal surface under mounting disc (3).

2. The fabricated silencer assembly of claim 1, wherein: the mounting disc (3) is provided with slots (8) uniformly distributed on the circumference and penetrating through the upper end surface and the lower end surface of the mounting disc (3), and the lower end surface of the upper ring (6) is provided with a plug board (9) matched with the slots (8).

3. The fabricated silencer assembly of claim 2, wherein: the outer ring of the mounting disc (3) is provided with a sleeve (12), and the sleeve (12) is fixed on the outer surface of the assembly pipe (1).

4. The fabricated silencer assembly of claim 3, wherein: the middle part of the side wall of the cylinder body (4) is inwards sunken to form a cambered surface.

5. The fabricated silencer assembly of claim 4, wherein: a plurality of through holes (10) are uniformly distributed on the side wall of the barrel body (4), and the axes of the through holes (10) are vertical to the side wall of the barrel body (4).

6. The fabricated silencer assembly of claim 1, wherein: mounting rings (11) are arranged at two ports of the assembling pipe (1).