CN219800470U

CN219800470U - Combined muffler

Info

Publication number: CN219800470U
Application number: CN202321112123.5U
Authority: CN
Inventors: 邹敏; 贾先刚; 吴奎宏; 王坤; 向世涛; 万洪君; 眭涛; 周刚
Original assignee: Sichuan Jinxing Clean Energy Equipment Group Co ltd; Sichuan Jinxing Hengzhong Engineering Design Co ltd; Sichuan Rong Teng Automation Equipment Co ltd
Current assignee: Sichuan Jinxing Clean Energy Equipment Group Co ltd; Sichuan Jinxing Hengzhong Engineering Design Co ltd; Sichuan Rong Teng Automation Equipment Co ltd
Priority date: 2023-05-10
Filing date: 2023-05-10
Publication date: 2023-10-03
Anticipated expiration: 2033-05-10

Abstract

The utility model discloses a combined muffler, which comprises a plurality of mufflers which are sequentially connected end to end, wherein the plurality of mufflers which are sequentially connected end to end are arranged in an S-shaped structure, an air inlet pipeline and an exhaust pipeline are respectively communicated with the muffler at the end part, and the exhaust pipeline is fixed through a bracket on the muffler. The combined muffler can effectively improve the noise elimination effect through the plurality of end-to-end mufflers, adopts S-shaped structural arrangement, and can save the occupied space of installation.

Description

Combined muffler

Technical Field

The utility model relates to the technical field of silencing equipment, in particular to a combined silencer.

Background

Along with the continuous development of industrial science and technology, the muffler is an essential important device in the industrial manufacturing field, the muffler is a device which allows air to pass through but can reduce or prevent sound from being transmitted, the practicality of the muffler is directly determined by the sound attenuation effect, and the conventional muffler mostly adopts a straight-through type noise attenuation channel at present, namely, the air inlet and the air outlet of the muffler are in the same direction.

At present, the sound-damping amount of the muffler is in direct proportion to the length of the muffler, and for occasions with high sound-damping amount requirements, the muffler is usually manufactured to be long, so that the muffler is inconvenient to process and difficult to carry, and the muffler is inconvenient to clean in the use process.

Disclosure of Invention

Therefore, in order to solve the above-mentioned deficiency, the utility model provides a kind of combined muffler here, this combined muffler has adopted several muffler combinations that end to end, can apply to the occasion that the noise elimination volume requires highly, guarantee the noise elimination effect, and set up it into S-shaped structure and swing joint mode, can facilitate assembling and dismantling the clearance, facilitate carrying, facilitate changing and cleaning to the muffler at the same time.

The utility model is realized in such a way, a combined muffler is constructed, the combined muffler comprises a plurality of mufflers which are sequentially connected end to end, the plurality of mufflers which are sequentially connected end to end are arranged in an S-shaped structure, an air inlet pipeline and an exhaust pipeline are respectively communicated with the muffler at the extreme end, and the exhaust pipeline is fixed through a bracket on the muffler.

Further, the muffler includes a housing; a first connecting part is arranged at one end part of the shell, a second connecting part is arranged at the other end part of the shell, and a silencing structure is arranged inside the shell between the first connecting part and the second connecting part.

The muffler is convenient to connect end to end through the first connecting part and the second connecting part, meanwhile, the muffler is also convenient to connect an air inlet pipeline and an exhaust pipeline, and a silencing structure is arranged between the first connecting part and the second connecting part, so that the silencing effect on air flow is achieved.

Further, the first connecting part of the shell is detachably connected with the air inlet pipeline or the first connecting part of the other shell;

the second connecting part of the shell is detachably connected with the second connecting part of the other shell through a connecting pipe;

the first connection portion of the other housing is detachably connected to the exhaust duct or to the first connection portion of the housing.

The detachable connection mode can be provided with a flange connection mode, and can also be provided with other connection modes, so that any silencer can be cleaned or replaced after being detached.

Furthermore, the silencing structures inside the plurality of the sequentially end-to-end silencers are of the same type.

The silencing structure is arranged to be of the same type, so that silencing quality can be improved, and multistage silencing is achieved.

Furthermore, the silencing structures inside the plurality of the sequentially end-to-end silencers are of different types.

The silencing structure is arranged in different types of occasions with complicated noise, so that different noise can be conveniently silenced through the different types of silencing structures.

The utility model has the following beneficial effects:

the combined muffler adopts a plurality of end-to-end (namely serial connection) mufflers, so that the muffling effect can be improved, the connecting form is set into an S-shaped structure, the occupied space is reduced, meanwhile, the detachable connecting mode is adopted, the assembly, the disassembly, the maintenance, the replacement and the like can be conveniently carried out, and the cleaning and the replacement of any muffler are further facilitated.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic elevational view of the present utility model;

FIG. 3 is a schematic side view of the present utility model;

FIG. 4 is a schematic top view of the present utility model;

FIG. 5 is a schematic perspective view of a muffler according to the present utility model;

FIG. 6 is a schematic perspective view in elevation of a muffler of the present utility model;

in the figure: 1. an air intake duct; 2. a muffler; 3. a connecting pipe; 4. an exhaust duct; 5. a bracket; 6. a housing; 7. a first connection portion; 8. a second connecting portion; 9. and a sound-deadening structure.

Detailed Description

The present utility model will be described in detail with reference to fig. 1 to 6, in order to solve the problem that the conventional muffler described in the above is inconvenient to install and maintain in a later stage when the amount of muffling is required to be high.

The utility model provides a combined muffler which can be implemented in the following manner by improving the structure: the utility model provides a combination formula silencer, includes the silencer 2 of several end to end in proper order, the silencer 2 of several end to end in proper order is S-shaped structure and arranges, and it has air inlet duct 1 and exhaust duct 4 to communicate respectively on silencer 2 of tip, exhaust duct 4 is fixed through support 5 on the silencer 2.

The support is convenient to stabilize the exhaust pipeline 4, so that the exhaust pipeline 4 is prevented from moving due to the reaction force of air flow when the exhaust pipeline 4 is exhausted, and the stability is influenced.

In the present embodiment, the muffler 2 includes a housing 6; a first connecting part 7 is arranged at one end part of the shell 6, a second connecting part 8 is arranged at the other end part of the shell 6, and a silencing structure 9 is arranged inside the shell 6 between the first connecting part 7 and the second connecting part 8.

In the present embodiment, the first connection portion 7 of the housing 6 is kept detachably connected to the intake duct 1 or to the first connection portion 7 of the other housing 6;

the second connecting part 8 of the shell 6 is detachably connected with the second connecting part 8 of the other shell 6 through the connecting pipe 3;

the first connection 7 of the further housing 6 is detachably connected to the exhaust gas duct 4 or to the first connection 7 of the housing 6.

In this embodiment, the sound damping structures 9 inside the several sound dampers 2 connected end to end in sequence are of the same type.

In this embodiment, the several muffler structures 9 inside the muffler 2 connected end to end in sequence are of different types.

The muffler structure of the muffler is mainly divided into six categories of resistive mufflers, impedance composite mufflers, microperforated panel mufflers, small-hole mufflers and active mufflers according to the muffler mechanism.

Wherein the resistive muffler is primarily noise reducing by use of porous sound absorbing materials. When sound waves enter the resistive muffler, a part of sound energy rubs in pores of the porous material and is converted into heat energy to dissipate, so that the sound waves passing through the muffler are weakened to form noise elimination, and the resistive muffler has good middle-high frequency noise elimination effect and poor low frequency noise elimination effect.

The resistive muffler is formed by combining pipes and chambers with abrupt interfaces, and similar to an electric filter, the resistive muffler can filter out noise with certain frequency components by selecting proper pipes and chambers for combination. The resistive muffler is suitable for eliminating middle and low frequency noise.

The impedance composite muffler is a combination of the resistive muffler and the resistive muffler, and the impedance composite muffler is easy to maintain frequently, has poor silencing effect, has short service cycle and the like due to the fact that the structure is complex, the weight is large, the high-temperature oxidation and the sound absorption are filled, the high-speed airflow impacts the sound absorption and the water vapor penetrates the sound absorption and the like.

The microperforated panel muffler is made of a pure metal sheet with a thickness of less than 1mm, and the sheet is perforated by a drill with a bore diameter of less than 1mm, and the perforation rate is 1% -5%. By selecting different penetration rates and different cavity depths with different plate thicknesses, the spectrum performance of the muffler can be controlled, so that the muffler has good noise elimination effect in a required frequency range.

The structure of the small hole silencer is a straight pipe with a closed tail end, and a plurality of small holes are drilled on the pipe wall. The principle of the small hole muffler is based on the frequency spectrum of jet noise, if the total area of the nozzles is kept unchanged and is replaced by a plurality of small nozzles, when the air flow passes through the small holes, the frequency spectrum of the jet noise moves to high frequency or ultrahigh frequency, so that the audible sound component in the frequency spectrum is obviously reduced, and the interference and injury to people are reduced.

The active silencer is to use the electronic equipment to generate a sound wave with the same size and opposite phase to the original sound pressure in the original sound field, so that the sound wave is counteracted with the original sound field in a certain range. The silencer is a set of instrument device, and mainly consists of a microphone, an amplifier, a phase shifting device, a power amplifier, a loudspeaker and the like.

Different types of silencers can be selected for installation according to actual needs.

When the combined muffler is installed and used, the air inlet pipeline 1 is connected with the first connecting part 7 of the first muffler 2, the second connecting part 8 of the first muffler 2 is connected with the second connecting part 8 of the subsequent muffler 2, the first connecting part 7 of the last muffler 2 is connected with the exhaust pipeline 4 for use after being connected in sequence, and in the use process, air flows pass through the air inlet pipeline 1 and enter each muffler 2, and then are discharged from the exhaust pipeline 4 after being subjected to noise elimination, so that noise elimination is completed.

The foregoing description is directed to the preferred embodiments of the present utility model, but the embodiments are not intended to limit the scope of the utility model, and all equivalent changes or modifications made under the technical spirit of the present utility model should be construed to fall within the scope of the present utility model.

Claims

1. A combination muffler, characterized in that: the muffler (2) that end to end in proper order including the several, the silencer (2) that the several end to end in proper order is S-shaped structural arrangement, and it has admission line (1) and exhaust duct (4) to communicate respectively on silencer (2) of tip, exhaust duct (4) are fixed through support (5) on silencer (2).

2. A combination muffler as defined in claim 1, wherein: the muffler (2) comprises a housing (6);

a first connection part (7) provided on one end of the housing (6);

a second connection part (8) provided on the other end part of the housing (6); and

and a sound damping structure (9) provided inside the housing (6) between the first connection portion (7) and the second connection portion (8).

3. A combination muffler as defined in claim 2, wherein: the first connecting part (7) of the shell (6) is detachably connected with the air inlet pipeline (1) or the first connecting part (7) of the other shell (6);

the second connecting part (8) of the shell (6) is detachably connected with the second connecting part (8) of the other shell (6) through the connecting pipe (3);

the first connection (7) of the further housing (6) is detachably connected to the exhaust gas line (4) or to the first connection (7) of the housing (6).

4. A combination muffler as defined in claim 2, wherein: the silencing structures (9) inside the plurality of the sequentially end-to-end silencers (2) are of the same type.

5. A combination muffler as defined in claim 2, wherein: the silencing structures (9) inside the plurality of the silencers (2) which are connected end to end in sequence are a resistive silencer, an impedance composite silencer, a microperforated panel silencer, a small hole silencer or an active silencer.