CN210890576U - Silencer - Google Patents

Abstract

The utility model relates to a chemical production's technical field wherein discloses a muffler locates exhaust duct's end, including the hollow jar body, the lower extreme of the jar body is equipped with the step-down subassembly with the exhaust duct intercommunication, a flash tank has been cup jointed to the periphery of step-down subassembly, be equipped with hindering nature in the flash tank and inhale the sound piece, the upper end of a flash tank is equipped with the secondary that communicates each other and expands the chamber, the upper end lateral wall that the chamber was expanded to the secondary is equipped with the exhaust hole that communicates jar external space, the downthehole resistance hush pipe that is equipped with of exhaust. The utility model discloses it is internal that high-pressure gas passes through exhaust duct entering jar to have, multistage dilatation step-down to utilize hindering nature to inhale sound absorption piece absorption partial energy, utilize the resistance hush pipe to make the sound wave interference each other between different frequencies, improve noise reduction, the effect of the noise pollution when reducing steam emission.

Description

Silencer

Technical Field

The utility model belongs to the technical field of chemical production's technique and specifically relates to a muffler is related to.

Background

In the industrial fields of electric power, chemical industry, metallurgy, textile and the like, some steam is required to be used as power to do work, some steam always has a part of redundant steam to be discharged to the atmosphere after doing work, and a large amount of noise is generated in the process of being discharged to the atmosphere to pollute the environment.

The existing Chinese patent with publication number CN206929486U discloses a silencer for blowing a medium-low pressure steam pipeline, which comprises an outer pipe and an inner pipe coaxially arranged in the outer pipe, wherein the inner pipe is connected with a steam discharge pipe through a reducing pipe and an elbow, and the side surface of the inner pipe is provided with a plurality of steam discharge small holes.

The air current gets into in the inner tube from the steam discharge pipe, and the increase of the volume of air current reduces gas discharge pressure to get into the outer tube through steam discharge aperture, finally discharge from the tip of outer tube, realize the amortization.

The above prior art solutions have the following drawbacks: the effect of reducing the steam discharge noise is not good only by once silencing.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a silencer, it is internal that high-pressure gas passes through exhaust duct entering jar, multistage dilatation step-down to utilize hindering nature to inhale sound absorption part absorption partial energy, utilize the resistance hush pipe to make the sound wave interference each other between different frequencies, improve the noise reduction effect, noise pollution when reducing steam emission.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

the utility model provides a muffler locates exhaust duct's end, includes the hollow jar body, and the lower extreme of the jar body is equipped with the step-down subassembly with exhaust duct intercommunication, a flash tank has been cup jointed to the periphery of step-down subassembly, be equipped with hindering nature in the flash tank and inhale the sound piece, the upper end of a flash tank is equipped with the secondary that communicates each other and expands appearance chamber, the secondary expands the upper end lateral wall that holds the chamber and is equipped with the exhaust hole in the external space of intercommunication jar.

Through adopting above-mentioned technical scheme, high-pressure gas passes through in the exhaust duct gets into the pressure reduction subassembly, the volume increase of air current, tentatively reduce atmospheric pressure, the air current gets into once the flash tank afterwards, its volume further increases, reduce atmospheric pressure once more, and the air current flow in once the flash tank and inhale sound piece looks mutual friction with hindering nature, make partial acoustic energy turn into heat energy and consumed, the air current gets into the secondary dilatation intracavity afterwards, further reduce atmospheric pressure, and discharge from the exhaust hole, multistage dilatation step-down and utilize hindering nature to inhale sound piece and absorb partial energy, the effect of making an uproar is reduced, noise pollution when reducing steam emission.

The utility model discloses further set up to: the resistance silencing device is characterized in that a resistance silencing pipe is arranged in the exhaust hole, cover plates are arranged at two ends of the resistance silencing pipe, a plurality of silencing holes with different diameters are formed in the side wall of the resistance silencing pipe, the lower end of the resistance silencing pipe is located in the tank body, and the upper end of the resistance silencing pipe extends out of the tank body.

Through adopting above-mentioned technical scheme, after the air current got into the secondary and expands the chamber, got into the resistance hush pipe in the amortization hole in different apertures to discharge to jar external from the hush hole in different apertures, produce the sound wave of different frequencies, the sound wave between different frequencies interferes each other, further improves the noise reduction effect, noise pollution when reducing steam emission.

The utility model discloses further set up to: the pressure reduction assembly comprises a pressure reduction barrel and a sealing head covering the upper end of the pressure reduction barrel, the lower end of the pressure reduction barrel is communicated with the exhaust pipeline, vent holes are formed in the circumferential side wall of the pressure reduction barrel, and the vent holes are communicated with the pressure reduction barrel and the primary flash tank.

Through adopting above-mentioned technical scheme, in high-pressure gas passed through exhaust duct entering decompression section of thick bamboo, the increase in volume of air current reduces atmospheric pressure, in the flash tank gets into once through the vent afterwards.

The utility model discloses further set up to: the inner side wall of the primary flash tank is coaxial with the pressure reduction cylinder.

Through adopting above-mentioned technical scheme, when gaseous flash vessel that gets into once along the air vent, gaseous radial flow along the decompression section of thick bamboo, the inside wall of flash vessel is once gone perpendicularly to its flow direction, and gaseous striking with the inside wall of flash vessel once consumes the energy that gaseous carried, is favorable to improving noise reduction effect.

The utility model discloses further set up to: the sound piece is inhaled to hindering is including locating the abatvoix on the flash tank inner wall and locating flash tank and be located its upper end inhale the sound curtain.

Through adopting above-mentioned technical scheme, the inside of abatvoix, sound-absorbing curtain has a large amount of tiny intercommunication holes, and the sound wave can go deep into inside the material along these holes, takes place the frictional action with the material and converts acoustic energy into heat energy.

The utility model discloses further set up to: the primary flash tank is internally provided with a support frame at the upper end thereof, and the sound absorption curtain is fixed at the lower end of the support frame.

Through adopting above-mentioned technical scheme, fixed inhaling the sound curtain, guarantee to inhale the normal work of sound curtain, guarantee its noise reduction effect.

The utility model discloses further set up to: and a space is reserved between the outer side wall of the primary flash tank and the inner wall of the tank body.

By adopting the technical scheme, the volume of the secondary expansion cavity is increased, the pressure reduction effect is improved, and the noise reduction effect is favorably improved.

The utility model discloses further set up to: a supporting piece is arranged between the upper end of the outer side wall of the primary flash tank and the inner wall of the tank body, and the supporting piece comprises a plurality of supporting rods which extend along the radial direction of the tank body.

Through adopting above-mentioned technical scheme, utilize the upper end of the fixed flash tank of bracing piece, guarantee that the abatvoix on its inner wall normally works, guarantee its noise reduction effect, simultaneously for space and secondary dilatation chamber intercommunication below the bracing piece realize the volume that the increase secondary expanded chamber.

To sum up, the utility model discloses a beneficial technological effect does:

high-pressure gas enters the tank body through an exhaust pipeline, multistage expansion and pressure reduction are carried out, and a resistive sound absorbing piece is used for absorbing partial energy, so that the noise reduction effect is improved, and the noise pollution during steam emission is reduced;

the sound waves with different frequencies interfere with each other by using the resistance silencing pipe, so that the noise reduction effect is further improved, and the noise pollution during steam emission is reduced.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic view of the structure of the inside of the can body.

In the figure, 0, exhaust duct; 1. a tank body; 11. an exhaust hole; 2. a voltage reduction component; 21. a pressure reducing cylinder; 22. sealing the end; 23. a vent hole; 3. a primary flash tank; 4. a resistive sound absorbing member; 41. a sound-absorbing panel; 42. a sound absorbing curtain; 5. a secondary expansion cavity; 6. a reactive muffler tube; 61. a cover plate; 62. a silencing hole; 7. a support member; 71. a support bar; 72. a support frame.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 and 2, in order to provide a silencer according to the present invention, the silencer includes a hollow tank 1 having a lower end connected to an exhaust pipe 0, a pressure reduction assembly 2, a primary expansion tank 3, a resistive sound absorption member 4, a secondary expansion chamber 5, and a resistive muffler pipe 6, which are connected to each other, are sequentially disposed in the tank 1 from bottom to top, four exhaust holes 11 are disposed at an upper end of the tank 1, and the resistive muffler pipe 6 is embedded in the exhaust holes 11; high-pressure gas passes through exhaust duct 0 and gets into jar 1 in to flow through pressure reduction unit 2, first flash tank 3, hindering nature in proper order and inhale sound 4, secondary expand appearance 5 and resistance hush pipe 6, through multistage dilatation step-down and utilize hindering nature to inhale sound 4, absorb partial energy, improve the noise reduction effect, noise pollution when reducing steam emission.

Referring to fig. 2, the pressure reducing assembly 2 includes a pressure reducing cylinder 21 and a sealing head 22 covering the upper end of the pressure reducing cylinder 21, the lower end of the pressure reducing cylinder 21 is communicated with an exhaust pipe 0, vent holes 23 are arranged on the circumferential side wall of the pressure reducing cylinder 21, a primary flash tank 3 is coaxially sleeved on the periphery of the pressure reducing assembly 2, the vent holes 23 are communicated with the pressure reducing cylinder 21 and the primary flash tank 3, the outer side wall of the primary flash tank 3 is spaced from the inner wall of the tank 1, a space in the tank 1 and outside the primary flash tank 3 forms a secondary expansion chamber 5, a support member 7 is arranged between the upper end of the outer side wall of the primary flash tank 3 and the inner wall of the tank 1, the support member 7 includes a plurality of support rods 71 extending along the radial direction of the tank 1, one end of the support rod 71 far from the inner wall of the tank 1 extends into the primary flash tank 3 and forms a support frame 72, the sound-absorbing plate 41 can adopt a novel sound-absorbing plate 41 disclosed in chinese patent with publication number CN103711276A, and the sound-absorbing curtain 42 can adopt the same structure, and the sound-absorbing plate 41 and the sound-absorbing curtain 42 are different only in installation position for the greatest difference.

High-pressure gas passes through exhaust duct 0 and gets into in pressure-reducing component 2, the volume increase of air current, preliminarily reduce atmospheric pressure, then gaseous radial entering once flash tank 3 along jar body 1 through gas vent 23 in, gaseous striking abatvoix 41 consumes partial energy and its volume further increases, reduce atmospheric pressure once more, gaseous flowing in flash tank 3 once, abatvoix 41, the inside of inhaling sound curtain 42 has the hole of a large amount of small intercommunications, the sound wave can go deep into inside the material along these holes, and take place friction with the material and turn into the sound energy into heat energy and consume, then gaseous entering secondary via the space between adjacent bracing piece 71 holds the chamber 5 in, further reduce atmospheric pressure, noise pollution when realizing reducing steam emission.

The two ends of the four resistant muffling pipes 6 are respectively provided with a cover plate 61, the lower ends of the resistant muffling pipes 6 are positioned in the tank body 1, the upper ends of the resistant muffling pipes 6 extend out of the tank body 1, the side walls of the resistant muffling pipes 6 are provided with a plurality of muffling holes 62 with different diameters, after the gas enters the secondary expansion cavity 5, the gas enters the resistant muffling pipes 6 from the muffling holes 62 with different diameters and is discharged out of the tank body 1 from the muffling holes 62 with different diameters, sound waves with different frequencies are generated, the sound waves with different frequencies interfere with each other, the noise reduction effect is further improved, and the noise pollution during steam discharge is reduced.

The implementation principle of the embodiment is as follows: high-pressure gas enters the pressure reduction assembly 2 through the exhaust pipeline 0, the volume of the gas flow is increased to primarily reduce the gas pressure, then the gas enters the primary flash tank 3 along the radial direction of the tank body 1 through the vent holes 23, the gas impacts the sound absorption plate 41 to consume partial energy and further increase the volume of the sound absorption plate, the gas reduces the gas pressure again, the gas flows in the primary flash tank 3, a large number of tiny communicated pores are formed inside the sound absorption plate 41 and the sound absorption curtain 42, sound waves can penetrate into the material along the pores and generate friction with the material to convert sound energy into heat energy for consumption, then the gas enters the secondary flash tank 5 through the gaps between the adjacent support rods 71 to further reduce the gas pressure, then the gas enters the reactive sound damping pipes 6 from the sound damping holes 62 with different apertures and is discharged out of the tank body 1 from the sound damping holes 62 with different apertures to generate sound waves with different frequencies, and the sound waves with different frequencies interfere with each, further improve the noise reduction effect, reduce the noise pollution when the steam discharges.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims (8)

1. The utility model provides a muffler, locates the end of exhaust duct (0), its characterized in that: including hollow jar body (1), the lower extreme of jar body (1) is equipped with pressure reduction assembly (2) with exhaust duct (0) intercommunication, flash tank (3) have been cup jointed to the periphery of pressure reduction assembly (2), be equipped with hindering nature in flash tank (3) and inhale sound spare (4), the upper end of flash tank (3) is equipped with the secondary that communicates each other and expands appearance chamber (5), the secondary expands the upper end lateral wall that holds chamber (5) and is equipped with the exhaust hole (11) that communicate jar body (1) outer space.

2. A muffler according to claim 1 wherein: be equipped with resistance hush pipe (6) in exhaust hole (11), the both ends of resistance hush pipe (6) are equipped with apron (61), be equipped with bloop (62) of a plurality of different diameters on the lateral wall of resistance hush pipe (6), the lower extreme of resistance hush pipe (6) is located jar body (1), and its upper end stretches out jar body (1).

3. A muffler according to claim 1 wherein: pressure reducing component (2) are including a pressure reducing section of thick bamboo (21) and cover head (22) in a pressure reducing section of thick bamboo (21) upper end, the lower extreme and exhaust duct (0) the intercommunication of a pressure reducing section of thick bamboo (21), be equipped with air vent (23) on the circumference lateral wall of a pressure reducing section of thick bamboo (21), air vent (23) intercommunication pressure reducing section of thick bamboo (21) and flash tank (3).

4. A muffler according to claim 3, wherein: the inner side wall of the primary flash tank (3) is coaxial with the pressure reduction cylinder (21).

5. A muffler according to claim 4, wherein: the resistive sound absorbing piece (4) comprises a sound absorbing board (41) arranged on the inner wall of the primary flash tank (3) and a sound absorbing curtain (42) arranged in the primary flash tank (3) and positioned at the upper end of the primary flash tank.

6. A muffler according to claim 5, wherein: the primary flash tank (3) is internally provided with a support frame (72) at the upper end thereof, and the sound absorption curtain (42) is fixed at the lower end of the support frame (72).

7. A muffler according to claim 1 wherein: and a space is reserved between the outer side wall of the primary flash tank (3) and the inner wall of the tank body (1).

8. The muffler of claim 6, wherein: support piece (7) are equipped with between the upper end of once flash vessel (3) lateral wall and jar body (1) inner wall, support piece (7) include a plurality of bracing pieces (71) along jar body (1) radial extension.

Images