CN212717402U - Bypass silencer - Google Patents

Abstract

The utility model relates to a bypass silencer, which comprises a shell, wherein flanges are respectively arranged at the inlet and outlet sides of the shell, a circle of sieve plate is arranged on the radial inner wall of the shell, a silencing material is filled between the sieve plate and the inner wall of the shell, a silencing unit is arranged at the center in the shell, the radial outer side of the silencing unit is fixed with the sieve plate on the wall of the shell through a supporting component, and the silencing material is filled in the silencing unit; the utility model has the advantages that: through increase the amortization unit that constitutes by the sieve in the muffler to reach the effect that the air current accelerates the diffusion, and cut down the sound wave energy by a wide margin, can reduce the length of muffler body and improve the ability of amortization by a wide margin through this design.

Description

Bypass silencer

Technical Field

The utility model belongs to the technical field of the muffler, especially, relate to a bypass muffler suitable for on heavy-calibre air-blower.

Background

Silencers are a device that prevents sound transmission while allowing airflow through, and are an important measure for eliminating aerodynamic noise. The silencer is a device for reducing noise, which is arranged on an airflow channel of air power equipment (such as a blower, an air compressor, a boiler exhaust port, a generator, a water pump and other equipment with high noise at an exhaust port) or in an air inlet and exhaust system. The existing bypass silencer with the large caliber of the blower is large in size (the silencer is not provided with a silencing unit at the center inside, and only the silencing unit is arranged on the inner wall of the silencer, so that the silencer is long in length for adapting to the blower with the large caliber), is not beneficial to field installation and construction, has certain requirements for space, and is not beneficial to requirements for compact layout and convenient installation of equipment.

Disclosure of Invention

An object of the utility model is to overcome the not enough of prior art existence, and provide a compact structure, the good bypass muffler of noise cancelling effect.

The utility model aims at accomplishing through following technical scheme, this kind of bypass muffler includes the casing, the exit side of casing is equipped with the flange respectively, the radial inner wall of casing is equipped with the round sieve, and packs between sieve and the shells inner wall and have the amortization material, center department in the casing is equipped with the amortization unit, the radial outside of amortization unit pass through supporting component with sieve on the casing wall is fixed, just the amortization unit intussuseption is filled with the amortization material.

Preferably, the silencing unit is of a cylindrical structure and is composed of a first cylindrical sieve plate body and a second semicircular sieve plate body, and two second semicircular sieve plate bodies are arranged and fixed on two sides of the first cylindrical sieve plate body respectively.

Preferably, a center line of the sound deadening unit is aligned with a center line of the casing.

Preferably, the support assembly comprises at least two support plates, and the support plates are distributed around the silencing unit and the screen plate on the housing wall at equal intervals and fixed by welding.

Preferably, bending edges are arranged on two sides of the supporting plate, and the bending edge on one side and the bending edge on the other side are distributed in a staggered mode.

Preferably, the shell comprises a first seamless steel pipe, a second seamless steel pipe and a seal head, the first seamless steel pipe and the second seamless steel pipe are fixedly connected through the seal head, and the flange is fixed on a port of the first seamless steel pipe.

Preferably, the outer diameter of the first seamless steel pipe is smaller than that of the second seamless steel pipe, and the end enclosure is arc-shaped.

Preferably, the sound attenuation material is mineral wool.

The utility model has the advantages that: through increase the amortization unit that constitutes by the sieve in the muffler to reach the effect that the air current accelerates the diffusion, and cut down the sound wave energy by a wide margin, can reduce the length of muffler body and improve the ability of amortization by a wide margin through this design.

Drawings

Fig. 1 is a schematic side view of the present invention.

Fig. 2 is a schematic view of the front view cross-section structure of the present invention.

Fig. 3 is a schematic view of the sectional structure a-a of fig. 2.

The reference numbers in the drawings are respectively: 1. a housing; 2. a flange; 3. a sieve plate; 4. a noise reduction material; 5. a silencing unit; 6. a support assembly; 11. a first seamless steel tube; 12. a second seamless steel tube; 13. sealing the end; 51. a first deck body; 52. a second deck body; 61. a support plate; 61-1 and bending edges.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings: as shown in fig. 1 and 2, the utility model discloses a casing 1, casing 1's exit side is equipped with flange 2 through the welding mode respectively, and casing 1's radial inner wall is equipped with round sieve 3, and the length of sieve 3 is greater than the length of the first sieve plate body 51 of column, and the both ends of sieve 3 are passed through the welding mode and are fixed on the second sieve plate body 52 inner wall of semicircle form, and such benefit lies in: firstly, the area of the sieve plate 3 on the inner wall of the shell is maximized, so that the silencing capacity is further improved, and secondly, the structure of the whole silencer is more stable by being fixed on the semicircular second sieve plate body 52; a silencing material 4 is filled between the sieve plate 3 and the inner wall of the shell 1, and a silencing unit 5 is arranged at the center in the shell 1 so as to achieve the effects of accelerating the diffusion of airflow and greatly reducing the sound wave energy, and the length of the silencer body can be greatly reduced and the silencing capacity can be improved through the design; the radial outer side of the silencing unit 5 is fixed with the sieve plate 3 on the wall of the shell 1 through the support component 6, so that the silencer is not impacted by airflow to damage the internal structure in the operation process; and the silencing unit 5 is filled with silencing material 4.

As shown in fig. 2, the silencing unit 5 is a cylindrical structure, so that the silencing area of the silencing unit 5 is maximized, and the airflow can be accelerated and diffused to the sieve plate 3 on the casing wall, so that the airflow is accelerated and diffused, and the sound wave energy is greatly reduced; specifically, the silencing unit 5 is composed of a first cylindrical sieve plate body 51 and a second semicircular sieve plate body 52, two semicircular sieve plate bodies 52 are arranged and fixed on two sides of the first cylindrical sieve plate body 51 by welding, and the silencing material inside the silencing unit is filled in the first cylindrical sieve plate body 51 and then the second semicircular sieve plate body 52 is fixed.

In order to make the air flow more uniform in the diffusion process, the central line of the silencing unit 5 and the central line of the shell 1 are in the same straight line, so that the vibration of the silencer is reduced in the operation process, and the silencing capacity is better.

The support assembly 6 comprises at least two support plates 61, and the support plates 61 are distributed around the screen plate 3 on the housing wall at equal intervals and fixed by welding, and as the air flow from the blower is usually larger, it is preferable that the support plates 61 are four, as shown in fig. 3, so that the structure of the silencing unit 5 is more stable during operation, and the internal structure is not damaged by the impact of the air flow.

In order to facilitate installation among the support plate 61, the sieve plate 3 and the silencing unit, the bending edges 61-1 are arranged on two sides of the support plate 61, the bending edges 61-1 on one side and the bending edges 61-1 on the other side are distributed in a staggered mode, and the bending edges are distributed in the staggered mode, so that the structural stability is greatly enhanced, and the stress capacity is better.

In order to facilitate the processing and installation of the shell, the shell 1 comprises a first seamless steel tube 11, a second seamless steel tube 12 and a seal head 13, the first seamless steel tube 11 and the second seamless steel tube 12 are fixedly connected through the seal head 13, the fixing mode is a welding mode, and the flange 2 is fixed on the port of the first seamless steel tube 11 through the welding mode.

The outer diameter of the first seamless steel tube 11 is smaller than that of the second seamless steel tube 12, and the end enclosure 13 is arc-shaped.

The noise reduction material 4 is mineral wool, and the mineral wool and products thereof are light, durable, non-combustible, non-corrosive, not damaged by worms and the like, and are excellent heat insulation and sound absorption materials.

The present invention is not limited to the above embodiments, and any change is made on the shape or material composition, and all the structural designs provided by the present invention are all the deformation of the present invention, which should be considered within the protection scope of the present invention.

Claims (8)

1. A bypass muffler comprising a housing (1), characterized in that: the import and export side of casing (1) is equipped with flange (2) respectively, the radial inner wall of casing (1) is equipped with round sieve (3), and packs between sieve (3) and casing (1) inner wall and have amortization material (4), center department in casing (1) is equipped with amortization unit (5), the radial outside of amortization unit (5) pass through supporting component (6) with sieve (3) on casing (1) wall are fixed, just amortization unit (5) intussuseption is filled with amortization material (4).

2. The bypass muffler of claim 1, wherein: the silencing unit (5) is of a cylindrical structure and is composed of a first cylindrical sieve plate body (51) and a second semicircular sieve plate body (52), and the two second semicircular sieve plate bodies (52) are fixed on two sides of the first cylindrical sieve plate body (51) respectively.

3. The bypass muffler of claim 1, wherein: the center line of the silencing unit (5) is on the same straight line with the center line of the shell (1).

4. The bypass muffler of claim 1, wherein: the support assembly (6) comprises at least two support plates (61), and the support plates (61) are distributed between the silencing unit (5) and the sieve plate (3) on the shell wall in an equidistant surrounding mode and are fixed in a welding mode.

5. The bypass muffler of claim 4, wherein: bending edges (61-1) are arranged on two sides of the supporting plate (61), and the bending edges (61-1) on one side and the bending edges (61-1) on the other side are distributed in a staggered mode.

6. The bypass muffler of claim 1, wherein: the shell (1) comprises a first seamless steel pipe (11), a second seamless steel pipe (12) and a seal head (13), the first seamless steel pipe (11) and the second seamless steel pipe (12) are fixedly connected through the seal head (13), and the flange (2) is fixed on a port of the first seamless steel pipe (11).

7. The bypass muffler of claim 6, wherein: the outer diameter of the first seamless steel pipe (11) is smaller than that of the second seamless steel pipe (12), and the end socket (13) is arc-shaped.

8. The bypass muffler of claim 1, wherein: the noise reduction material (4) is mineral wool.

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