CN212407945U - Exhaust silencer - Google Patents

Abstract

The utility model discloses an exhaust silencer, which comprises a shell, wherein an air inlet is arranged at the top of the shell, an air outlet is arranged at the bottom of the shell, two fixing holes are formed in the air inlet, a waist-shaped hole is formed between the two fixing holes, a first separation net and a second separation net are arranged on the shell, four thin pipes are arranged in the shell, and one ends of the four thin pipes are communicated with the air inlet through an air inlet cover; the utility model has the advantages of reasonable design, high durability and convenient use, shell surface adopts the sectional type to separate the net structure, separate two on surface and net separately sets up, can let sound separately from two separate net internal outdiffusion in, gas blowout's speed has been reduced, thereby the production of noise has been reduced, and inside gas that lets in through many tubule dispersions, and with the crisscross setting of mesh, the noise of production can disperse the emission, the concurrency of sound has been reduced, thereby reduce the sympathetic response of sound, the effect of amortization is reached.

Description

Exhaust silencer

Technical Field

The utility model belongs to the technical field of the silencer, specifically be an exhaust silencer.

Background

The exhaust silencer is used for the airflow pipeline with noise transmission, and can attenuate or reflect the noise in the pipeline by using noise reduction devices such as pipelines and elbows with sound absorption linings or pipelines with suddenly changed sectional areas and other discontinuous acoustic impedances. The former is called resistive muffler, the latter is called reactive muffler, and there are also impedance compound mufflers. However, the existing exhaust silencer has a single structure, and cannot further improve silencing quality due to the structural limitation, when gas is exhausted, noise can be generated in the gas exhaust process, and the silencing quality cannot be guaranteed.

To solve the problems in the related art, no effective solution has been proposed, and an exhaust muffler has been proposed.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a to prior art not enough, the utility model provides an exhaust silencer has advantages such as noise elimination high quality, convenient to use, has solved the poor scheduling problem of current exhaust silencer noise elimination quality.

(II) technical scheme

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an exhaust muffler, includes the casing, the casing top is provided with the air inlet, the casing bottom is provided with the gas vent, two fixed orificess have been seted up on the air inlet, two waist shape hole has been seted up between the fixed orifices, be provided with first net and the second that separates on the casing and separate the net, be provided with four tubules in the casing, four through the inlet cowling intercommunication between tubule one end and the air inlet, four through the venthole intercommunication, four between the tubule other end and the gas vent a plurality of bleeder vents have been seted up on the tubule, parallel arrangement has a plurality of sponge boards in the gas vent, the last laminating of shells inner wall has the acoustic cel.

In a further improvement, four of the thin tubes are coiled tubes.

In a further improvement mode, a plurality of air holes in the four thin tubes are arranged in a staggered mode.

In a further improvement mode, the air inlet cover and the air outlet cover are of funnel-shaped structures.

In a further improvement, the number of the sponge plates is seven.

(III) advantageous effects

Compared with the prior art, the utility model provides an exhaust silencer possesses following beneficial effect:

1. this kind of exhaust muffler, shell surface adopts the sectional type to separate the net structure, separate two on surface and net separately the setting, can let sound separately from two separate net internal diffusion outwards from separating in exhausting, gas ejection's speed has been reduced, thereby the production of noise has been reduced, and inside gas that lets in through many tubule dispersions, and set up the mesh is crisscross, the noise of production can disperse the emission, the concurrency of sound has been reduced, thereby reduce the sympathetic response of sound, reach the effect of amortization.

2. This kind of exhaust muffler adopts the structure of waist shape hole cooperation fixed orifices, and fixed fastness can be guaranteed to a plurality of mounting holes, also can improve the flexibility of installation simultaneously.

Drawings

Fig. 1 is a front view of the present invention;

fig. 2 is a schematic view of the internal structure of the present invention.

In the figure: 1. a housing; 2. an air inlet; 3. a first screen; 4. a second screen; 5. an exhaust port; 6. a waist-shaped hole; 7. a fixing hole; 8. an air intake hood; 9. a sponge plate; 10. an air outlet cover; 11. a sound insulating board; 12. a thin tube; 13. and (4) air holes.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-2, the present invention provides a technical solution: the utility model provides an exhaust muffler, includes casing 1, 1 top of casing is provided with air inlet 2, 1 bottom of casing is provided with gas vent 5, two fixed orificess 7 have been seted up on the air inlet 2, two waist shape hole 6 has been seted up between the fixed orifices 7, be provided with first net 3 and the second that separates on the casing 1 and separate net 4, be provided with four tubules 12 in the casing 1, four through 8 intercommunications of air inlet hood between 12 one end of tubule and the air inlet 2, four through the 10 intercommunications of air outlet hood between 12 other ends of tubule and the gas vent 5, four a plurality of bleeder vents 13 have been seted up on the tubule 12, the parallel is provided with a plurality of sponge boards 9 in the gas vent 5, the laminating has acoustic celotex board 11.

As shown in fig. 2, four tubule 12 is the coiled pipe, and the coiled pipe has increased gaseous time of passing through, lets the sound of gaseous production discharge from bleeder vent 13 gradually, four a plurality of bleeder vents 13 on the tubule 12 are crisscross to be set up, when gaseous letting in, avoid sound to discharge from bleeder vent 13 simultaneously with the crisscross setting of bleeder vent 13, reduce the sympathetic response of sound, the cover 8 of admitting air the cover 10 of giving vent to anger all is hopper-shaped structure, thereby the quantity of sponge board 9 is seven, thereby reduces the size of sound through the sound absorption of sponge board 9.

The working principle is as follows: when in use, the silencer is fixed on the air outlet pipe and can be clamped and fixed by inserting screws into the fixing holes 7 or the waist-shaped holes 6. After fixed completion, when exhausting, gaseous at first through air inlet 2, and in the tubule 12 in the casing 1 and the casing 1 that enters into from air inlet 2, the acoustic celotex board 11 that the noise accessible both sides that the gaseous production that enters into the casing 1 absorbed the sound insulation, it makes an uproar to carry out preliminary falling, and the noise that the gaseous production that enters into four tubules 12 then discharges from corresponding bleeder vent 13 one by one, refine its letting in volume, it makes an uproar to carry out the secondary, utilize sponge board 9 noise absorption once more when discharging from gas vent 5, it makes an uproar to carry out the cubic, thereby the process of eliminating the noise is accomplished.

To sum up, the utility model discloses rational in infrastructure, casing 1 surface adopts the sectional type to separate the net structure, separates two nets that set up on surface separately, can let sound separate from two separate nets spread outward in exhausting, has reduced the speed of gas blowout, thereby has reduced the production of noise, and inside disperses the gas that lets in through many tubules 12, and sets up the mesh crisscross, and the noise that produces can disperse the emission, has reduced the concurrency of sound, thereby reduces the sympathetic response of sound, reaches the effect of amortization; by adopting the structure that the waist-shaped hole 6 is matched with the fixing hole 7, the firmness of fixation can be ensured by the plurality of mounting holes, and the flexibility of mounting can be improved.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element to which the reference is made must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (5)

1. An exhaust muffler comprising a housing (1), characterized in that: casing (1) top is provided with air inlet (2), casing (1) bottom is provided with gas vent (5), two fixed orifices (7) have been seted up on gas inlet (2), two waist shape hole (6) have been seted up between fixed orifices (7), be provided with on casing (1) first separate net (3) and second separate net (4), be provided with four tubules (12), four in casing (1) through admitting air cover (8) intercommunication, four between tubule (12) one end and gas inlet (2) through air outlet cover (10) intercommunication, four between the tubule (12) other end and gas vent (5) a plurality of bleeder vents (13) have been seted up on tubule (12), the parallel is provided with a plurality of sponge boards (9) in gas vent (5), the laminating has acoustic celotex board (11) on casing (1) inner wall.

2. The exhaust muffler according to claim 1, wherein: the four thin tubes (12) are coiled tubes.

3. The exhaust muffler according to claim 1, wherein: a plurality of air holes (13) on the four thin tubes (12) are arranged in a staggered mode.

4. The exhaust muffler according to claim 1, wherein: the air inlet cover (8) and the air outlet cover (10) are of funnel-shaped structures.

5. The exhaust muffler according to claim 1, wherein: the number of the sponge plates (9) is seven.

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