CN211314671U

CN211314671U - Modular muffler device

Info

Publication number: CN211314671U
Application number: CN201921794057.8U
Authority: CN
Inventors: 王兵; 顾剑; 叶飞
Original assignee: Taixing City Xinglong Ships Machinery Co ltd
Current assignee: Taixing City Xinglong Ships Machinery Co ltd
Priority date: 2019-10-23
Filing date: 2019-10-23
Publication date: 2020-08-21
Anticipated expiration: 2029-10-23

Abstract

The utility model relates to a modularization noise eliminator, including the noise elimination passageway, the inside of noise elimination passageway sets up the cavity, the both ends of noise elimination passageway set up the opening respectively, set up sound-absorbing structure in the cavity, sound-absorbing structure includes middle part sound absorption subassembly and lateral wall sound absorption subassembly, wherein, middle part sound absorption subassembly includes end awl, sound absorption perforated pipe and sound absorbent, and is two sets of the end awl respectively with the airtight structure is connected and is constituteed at the both ends of sound absorption perforated pipe, sound absorbent sets up in the airtight structure. The utility model provides a modularization noise eliminator simple structure, the installation of being convenient for can reduce the windage through the end awl to noise that produces when the cross wind carries out the active absorption through the sound absorbing material that sets up in perforation facing pipe and sound absorber perforated pipe.

Description

Modular muffler device

Technical Field

The utility model belongs to the technical field of the tuber pipe noise elimination, concretely relates to modularization noise eliminator.

Background

According to the frequency spectrum characteristic data obtained by actually testing various industrial fan operation field noise sources, determining how much noise elimination quantity is needed in which frequency spectrum ranges as the main basis for designing a sound absorber and a fluid channel, and simultaneously adopting a narrow rectangular channel with a larger sound absorption material veneer to enhance the absorption effect, wherein when the noise source of the fan is at the maximum noise level, the frequency spectrum value is more than one, and the requirements for the noise elimination quantity are different for different frequency spectrum bands, therefore, the series of ventilating duct silencers and induced draft fan silencers are of impedance sound flow type, adopt a resistance type structure which has the functions of sound absorption and elimination for high and medium frequency noise and an anti type structure which has the functions of sound elimination and reduction for the low and medium frequency noise, and simultaneously adopt two kinds of sound absorption and elimination areas of high frequency and low frequency in the resistance type channel to widen the noise elimination frequency band to the maximum extent so as to realize good noise elimination and reduction effect, the fan silencer divide into: silencer of centrifugal fan, silencer of Roots fan, silencer of blower, silencer of axial flow fan.

The fan muffler is mainly used for reducing aerodynamic noise of air inlets of various fans, air ducts and closed machine rooms, and is divided into a circular structure and a rectangular structure according to different inlet and outlet structures of the fans, wherein the rectangular structure is divided into two types of A, B, the two ends of the A type are flanges, the flanges are directly connected in series in a pipeline (namely a pipeline muffler), one end of the B type is a flange, the other end of the B type is directly emptied by atmosphere (a rainproof hood can be installed), but the device of the current rectangular structure cannot simultaneously achieve the effects of smooth air passing and obvious noise elimination effect.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a modularization noise eliminator, including the noise elimination passageway, the inside of noise elimination passageway sets up the cavity, the both ends of noise elimination passageway set up the opening respectively, set up sound absorbing structure in the cavity, sound absorbing structure includes middle part sound absorbing component and lateral wall sound absorbing component, and from this, when the noise elimination passageway is too wind, the noise of production can pass through respectively middle part sound absorbing component and lateral wall sound absorbing component absorb, wherein, middle part sound absorbing component includes end awl, sound absorption perforated pipe and sound absorbing material, and is two sets of the end awl respectively with the both ends of sound absorbing pipe are connected and are constituteed enclosed construction, sound absorbing material sets up in the enclosed construction.

Preferably, the two ends of the silencing channel are respectively provided with a flange structure, specifically, the shell of the silencing channel comprises the flange structures at the two ends and a shell at the middle part, the flange structures are connected with a neck cylindrical pipe, the neck cylindrical pipe is connected with a neck conical pipe, so that the cross section of the shell of the silencing channel is gradually increased, the middle part of the shell of the silencing channel is of a rectangular structure, the neck conical pipe is connected with an end plate, and the end plate is connected with the shell, thereby forming the shell structure of the silencing channel.

In any of the above schemes, preferably, two ends of the middle sound absorption assembly are respectively fixed in the sound attenuation channel through three sets of brackets, one end of each bracket is connected with the middle sound absorption assembly, and the other end of each bracket is fixed on the inner wall of the sound attenuation channel.

In any of the above aspects, preferably, the sound absorbing material is flame retardant hemp.

In any of the above aspects, it is preferable that the side wall sound absorption member is disposed closely to an inner wall of the sound attenuation passage.

In any of the above aspects, it is preferred that the sidewall sound absorbing assembly comprises a sound absorbing material and a perforated facing tube.

In any one of the above aspects, it is preferable that the sound absorbing material is fixed to the inner wall of the sound attenuation passage through the perforated facing pipe.

The utility model has the advantages that: the utility model provides a modularization noise eliminator simple structure, the installation of being convenient for can reduce the windage through the end awl to noise that produces when the cross wind carries out the active absorption through the sound absorbing material that sets up in perforation facing pipe and sound absorber perforated pipe.

Drawings

Fig. 1 is a schematic view of a preferred embodiment of a modular muffler assembly according to the present invention;

fig. 2 is a left side view of the embodiment of fig. 1 of a modular muffler assembly according to the present invention.

The figures are labeled as follows: 1-flange construction; 2-perforating a surface protection pipe; 3-a sound absorber perforated pipe; 4-sound absorbing material; 5-end plate; 6-a housing; 7-neck tapered tube; 8-a neck cylindrical tube; 9-end cone; 10-a stent.

Detailed Description

In order to further understand the present invention, the present invention will be described in detail with reference to the following embodiments.

As shown in fig. 1 and fig. 2, the utility model provides a modular noise elimination device, including the noise elimination passageway, the noise elimination passageway is symmetrical structure, the both ends of noise elimination passageway set up the opening respectively, and the opening at both ends is used for the air inlet and goes out and absorb the noise that the wind produced in the noise elimination passageway, specifically, the casing of noise elimination passageway includes flange structure 1 and the shell 6 in middle part at both ends, flange structure 1 is connected with neck column pipe 8, neck column pipe 8 is connected with neck taper pipe 7, makes the cross-section of noise elimination passageway casing increase gradually, the middle part of noise elimination passageway casing is the rectangle structure, neck taper pipe 7 is connected with end plate 5, end plate 5 with shell 6 is connected, constitutes the shell structure of noise elimination passageway from this, the inside of noise elimination passageway sets up the cavity, set up sound-absorbing structure in the cavity, sound-absorbing structure is used for absorbing the sound that the wind produced, sound-absorbing structure includes middle part sound absorption subassembly and lateral wall sound absorption subassembly, wherein, the both ends of middle part sound absorption subassembly are the cone structure, and the middle part is the drum structure, the both ends of middle part sound absorption subassembly are fixed through three group's supports 10 respectively in the noise elimination passageway, the one end of support 10 with middle part sound absorption subassembly is connected, the other end of support 10 is fixed the inner wall of noise elimination passageway, middle part sound absorption subassembly includes end awl 9, sound absorption perforated pipe 3 and sound absorbent 4, and is two sets of end awl 9 set up at both ends and respectively with the both ends of sound absorber perforated pipe 3 are connected and are constituteed inside airtight structure for accommodation space, sound absorbent 4 sets up in the airtight structure, sound absorber perforated pipe 3 can not only effectively protect and through setting up sound absorbent 4 that sets up in inside A plurality of through-holes on the sound body perforated pipe 3 can improve inside sound absorbing material 4 produces the absorption efficiency of sound to the cross-wind, lateral wall sound absorbing component hug closely with the inner wall setting of noise elimination passageway, it is specific, lateral wall sound absorbing component includes sound absorbing material 4 and perforation visor pipe 2, sound absorbing material 4 passes through perforation visor pipe 2 is fixed in the concave part that end plate 5 and shell 6 are constituteed, perforation visor pipe 2 both can effectively protect and be in through setting up sound absorbing material 4 in inside a plurality of through-holes on the sound absorption perforated pipe 2 can improve inside sound absorbing material 4 produces the absorption efficiency of sound to the cross-wind, sound absorbing material 4 is fire-retardant pile.

It will be understood by those skilled in the art that the modular muffler assembly of the present invention includes any combination of the above-described embodiments and embodiments of the present invention and the various portions shown in the drawings, which are not intended to be limited to the space and are not described in detail for the sake of brevity. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a modularization noise eliminator, includes the noise elimination passageway, the inside of noise elimination passageway sets up the cavity, the both ends of noise elimination passageway set up the opening respectively, set up sound-absorbing structure in the cavity, sound-absorbing structure includes middle part sound absorption subassembly and lateral wall sound absorption subassembly, a serial communication port, middle part sound absorption subassembly includes end awl, sound absorption perforated pipe and sound absorbent, and is two sets of the end awl respectively with the both ends of sound absorption perforated pipe are connected and are constituteed airtight structure, sound absorbent sets up in the airtight structure.

2. The modular muffling device of claim 1, wherein both ends of the muffling channel are provided with flange structures.

3. The modular sound attenuation device of claim 2, wherein two ends of the middle sound absorption assembly are fixed in the sound attenuation channel through three sets of brackets, one end of each bracket is connected with the middle sound absorption assembly, and the other end of each bracket is fixed on the inner wall of the sound attenuation channel.

4. The modular muffler apparatus of claim 1, wherein the sound absorbing material is flame retardant hemp.

5. The modular muffler apparatus of claim 1, wherein the side wall sound absorbing assembly is disposed against an inner wall of the sound damping channel.

6. The modular muffler apparatus of claim 5, wherein the side wall sound absorbing assembly comprises a sound absorbing material and a perforated facing tube.