CN202789046U - Airflow silencer with inner and outer silencer covers - Google Patents
Airflow silencer with inner and outer silencer covers Download PDFInfo
- Publication number
- CN202789046U CN202789046U CN 201220501092 CN201220501092U CN202789046U CN 202789046 U CN202789046 U CN 202789046U CN 201220501092 CN201220501092 CN 201220501092 CN 201220501092 U CN201220501092 U CN 201220501092U CN 202789046 U CN202789046 U CN 202789046U
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- silencer
- silencer cover
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- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
The utility model discloses an airflow silencer with inner and outer silencer covers. The airflow silencer with the inner and outer silencer covers comprises an outer silencer cover (1) and at least one inner silencer cover (2). Silencer holes (21, 11) are formed in the side faces of the inner and outer layer silencer covers (2,1), the silencer covers (1,2) share a central axis and are sleeved on a flange plate (3) in a layered mode, the innermost layer silencer cover (2) is open at the lower end and sealed in the upper end, and the other silencer covers are sealed at the upper ends, a sealed end face and a lateral face of each silencer cover is mutually separated with a sealed end face and lateral face of the adjacent silencer cover to form an interlayer silencer room (7), an inner layer silencer room (8) is formed in the innermost layer silencer cover (2), a drainage channel is installed at the lower end of each layer silencer room, a drainage pipe (6) is installed at the lower end of the outer silencer cover (1), and connecting holes (31) which are connected with external components in a matched mode are formed in the flange plate (3). The airflow silencer with the inner and outer silencer covers is simple in structure and low in cost, due to flange connection, process and installation are convenient, the airflow silencer with the inner and outer silencer covers is not prone to blocking, changing of absorption materials is not needed, and noise reduction performance is stable.
Description
[technical field]
The utility model relates to silencer for gas flow or the venting gas appliance of general machine or equipment, relates in particular to the silencer take sound reduction method as characteristics, particularly relates to the airflow noise-elimination device of eliminating the noise with inside and outside silencer cover and sound-absorbing material combination.
[background technique]
Pressurized gas under pressurized container or other occasions because gas sharply expands and violent turbulent flow, tends to produce very strong noise during discharging, needs to use special noise reduction tapping equipment or baffler is set to carry out noise reduction, to reduce the pollution of NOISE ON ENVIRONMENT.Simultaneously, high-temperature gas is when discharging, because drop in temperature can spray steam water, the personnel that may cause scald at floss hole.
The conventional baffler that uses of gas discharge outlet mostly is micropore sintered type aperture diffusion baffler or pure resistive muffler, and this two classes baffler has the advantage that volume is little, noise reduction is large.This class baffler can be filtered into exhaust jet stream countless little air-flows with a large amount of tiny holes, and gas pressure is lowered, and flow velocity is diffused and reduces, thereby reaches the purpose of noise reduction.But the Kong Taixiao of micropore sintered type aperture diffusion baffler is after use a period of time, because the dust in impurity, oil, water and the environment in the pressed gas causes blockage of the micro orifice.In case corresponding gas discharging apparatus full load was moved about half a year, almost just there is 40%～50% micropore to stop up in the micropore baffler, and tiny impurity pierces very difficult cleaning in the micropore, after so this baffler uses a period of time, owing to stop up serious, it can only be dismantled need not, otherwise can make exhaust very obstructed and affect equipment normal operation.
Pure resistive muffler airspeed is high, causes disturbance to produce larger regenerated noise owing to boring a hole to air-flow when flowing through perforation protection slab surface, thereby has greatly weakened its noise reduction capability.Secondly, because this exhaust has intermittence, flow velocity is high again, so the constitutional detail of baffler inside is produced stronger impact force, makes these parts generation vibrations and gives off construct noise, thereby reduce silencing function.In addition, this baffler nearly all soaks in the baffler sound-absorbing porous material micropore and has expired You Heshui after using a period of time, and sound-absorbing material is rotten rotting therefore, cause that sound-absorbing material in the baffler reduces gradually, the sound absorbing capabilities degradation, affect the noise reduction of baffler.
Chinese patent 200420150815.X " metal fiber single stage dissipative muffler with back-pressure ", 200620124307.3 " with the baffler of la farr pipe " and the disclosed technology of 200820204871.5 " a kind of bafflers ", all above-mentioned baffler has been done improvement, certain effect is arranged, but its processing, installation more complicated still exist the loss of sound-absorbing material, need to change.
[model utility content]
The technical problems to be solved in the utility model is to avoid above-mentioned the deficiencies in the prior art part and a kind of airflow noise-elimination device with inside and outside silencer cover is provided.
The technological scheme that the utility model solve the technical problem employing is: a kind of airflow noise-elimination device with inside and outside silencer cover, comprise the outer silencer cover of one deck and the interior silencer cover of one deck at least, in described, the side of outer silencer cover all is provided with respectively many bloops, each silencer cover altogether medial axis layering is set on the flange plate, the silencer cover lower ending opening upper end closed of innermost layer, all the other each layer silencer cover upper end closeds, the silencer cover Closed End of the Closed End of every layer of silencer cover and side and adjacent layer and side all separate formation interlayer anechoic chamber each other, the silencer cover inside of innermost layer becomes the internal layer anechoic chamber, there is drainage channel each lower end, interlayer anechoic chamber, waste pipe is equipped with in outer silencer cover lower end, has on the flange plate to be connected suitable attachment hole with external member.
Internal layer anechoic chamber entrance is communicated with the gas discharge outlet of the external member that needs noise reduction, enters successively each interlayer anechoic chamber from internal layer anechoic chamber gas out, finally enters atmosphere outside by outer silencer cover.The waste pipe of outer silencer cover below is collected the condensed water that the guide condensation produces.
Described interior silencer cover can only have one deck.
Described inside and outside layer silencer cover can be cylindrical shape, and wall thickness is not less than 10mm.
Described each bloop can evenly distribute, and diameter can be not less than 10mm, and the interval is not less than 2 times of its diameter.
The beneficial effects of the utility model are: simple in structure, with low cost, and adopt flange to connect, process easy for installationly, be difficult for stopping up, need not change sound-absorbing material, anti-acoustic capability is stablized.
[description of drawings]
Fig. 1 is the main sectional structure schematic representation of looking of orthographic projection that the utlity model has the airflow noise-elimination device preferred embodiment of inside and outside silencer cover;
Fig. 2 is the plan view of Fig. 1.
Among the figure: 1 is that outer silencer cover, 11 is that outer silencer cover bloop, 2 is that interior silencer cover, 21 is that interior silencer cover bloop, 3 is that flange plate, 31 is that attachment hole, 6 is that waste pipe, 7 is that interlayer anechoic chamber, 8 is that internal layer anechoic chamber, 9 is each silencer cover medial axis.
[embodiment]
The utility model is described in further detail below in conjunction with each accompanying drawing.
Referring to accompanying drawing 1 and accompanying drawing 2, the utlity model has the airflow noise-elimination device of inside and outside silencer cover, comprise the outer silencer cover 1 of one deck and the interior silencer cover 2 of one deck at least, in described, outer silencer cover 2,1 side all is provided with respectively many bloops 21,11, each silencer cover 1,2 are total to the medial axis layering is set on the flange plate 3, the silencer cover 2 lower ending opening upper end closeds of innermost layer, all the other each layer silencer cover upper end closeds, the silencer cover upper-end surface of the upper-end surface of every layer of silencer cover and side and adjacent layer and side all separate formation interlayer anechoic chamber 7 each other, silencer cover 2 inside of innermost layer become internal layer anechoic chamber 8, there is drainage channel each lower end, interlayer anechoic chamber, waste pipe 6 is equipped with in outer silencer cover 1 lower end, has on the flange plate 3 to be connected suitable attachment hole 31 with external member.
In preferred embodiment of the present utility model, only has silencer cover 2 in one deck.And described inside and outside layer silencer cover 2,1 is cylindrical shape, and wall thickness is not less than 10mm.
In preferred embodiment of the present utility model, described each bloop 21,11 evenly distributes.And described bloop 21,11 diameter are not less than 10mm, and interval D is not less than 2 times of its diameter.
Referring to Fig. 1, Fig. 2, in preferred embodiment of the present utility model, silencer cover 1,2 monomer are the cylindrical structure of end opening the other end sealing, adopt stainless steel, diameter is determined by the size of extraneous gas floss hole and adpting flange 3, generally between 100～650mm, wall thickness is 10～30mm, and the difference in diameter of internal and external layer silencer cover is between 50～90mm.The bloop 11 of silencer cover side, 21 diameters are 10～30mm, and distance between borehole D is 20～60mm.Outer silencer cover 1 is to construct as the donut of medial axis take the center of circle vertical line of adpting flange 3 with internal layer silencer cover 2, directly is welded on the adpting flange 3.Internal layer silencer cover 2 opening ends internal diameter edge direct and adpting flange 3 welds, and its height H 1 is 350～840mm.Outer silencer cover 1 height H 2 is 520～2000mm, and the bottom has drain opening, and external connection row waterpipe 6, its diameter are 20～40mm, collects the condensed water that the guide high-temperature gas produces in the floss hole condensation.
Pressurized gas from gas discharge outlet out at first enter an anechoic chamber 8 of internal layer silencer cover 2 inside, through diffusion, the flow velocity of gas reduces, and air pressure descends, and enters secondary anechoic chamber 7 between internal layer silencer cover 2 and the outer silencer cover 1 by each bloop 21, again diffusion, step-down is slowed down.Finally each bloop 11 from outer silencer cover 1 enters the outside atmosphere layer.Each silencer cover is cylindrical shape, is conducive to like this gas harmony of section space (comprising anechoic chamber 8 and secondary anechoic chamber 7) when flowing within it, is conducive to reduce turbulent flow and noise.
Claims (5)
1. airflow noise-elimination device with inside and outside silencer cover is characterized in that:
Comprise the outer silencer cover (1) of one deck and the interior silencer cover (2) of one deck at least, in described, outer silencer cover (2,1) side all is provided with respectively bloop (21,11), each silencer cover (1,2) the medial axis layering is set on the flange plate (3) altogether, the silencer cover of innermost layer (2) lower ending opening upper end closed, all the other each layer silencer cover upper end closeds, the silencer cover upper-end surface of the upper-end surface of every layer of silencer cover and side and adjacent layer and side all separate formation interlayer anechoic chamber (7) each other, the silencer cover of innermost layer (2) inside becomes internal layer anechoic chamber (8), there is drainage channel each lower end, interlayer anechoic chamber, waste pipe (6) is equipped with in outer silencer cover (1) lower end, has on the flange plate (3) to be connected suitable attachment hole (31) with external member.
2. the airflow noise-elimination device with inside and outside silencer cover according to claim 1 is characterized in that:
Described interior silencer cover (2) only has one deck.
3. the airflow noise-elimination device with inside and outside silencer cover according to claim 1 and 2 is characterized in that:
Described inside and outside layer silencer cover (2,1) is cylindrical shape, and wall thickness is not less than 10mm.
4. the airflow noise-elimination device with inside and outside silencer cover according to claim 1 and 2 is characterized in that:
Described each bloop (21,11) evenly distributes.
5. the airflow noise-elimination device with inside and outside silencer cover according to claim 4 is characterized in that:
The diameter of described each bloop (21,11) is not less than 10mm, and the interval is not less than 2 times of its diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220501092 CN202789046U (en) | 2012-09-28 | 2012-09-28 | Airflow silencer with inner and outer silencer covers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220501092 CN202789046U (en) | 2012-09-28 | 2012-09-28 | Airflow silencer with inner and outer silencer covers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202789046U true CN202789046U (en) | 2013-03-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220501092 Expired - Lifetime CN202789046U (en) | 2012-09-28 | 2012-09-28 | Airflow silencer with inner and outer silencer covers |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202789046U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106436946A (en) * | 2016-10-14 | 2017-02-22 | 潘伟松 | Noise reducing crystal and noise reducing wall |
| CN107424595A (en) * | 2017-05-31 | 2017-12-01 | 青岛众瑞智能仪器有限公司 | High flow rate sampling environment air equipment muffler |
| CN107468040A (en) * | 2017-10-10 | 2017-12-15 | 四川大学 | Acoustic hood with damping noise reduction, the whirlpool diversion function that disappears |
| CN107503822A (en) * | 2017-09-21 | 2017-12-22 | 永嘉县荣信科技有限公司 | A kind of automobile exhaust muffler |
| CN108966592A (en) * | 2018-07-06 | 2018-12-07 | 合肥格骄电子科技有限公司 | A kind of noiseless communication apparatus |
| CN113958386A (en) * | 2021-12-22 | 2022-01-21 | 诸城市大路机械有限公司 | Exhaust device with silencing function |
-
2012
- 2012-09-28 CN CN 201220501092 patent/CN202789046U/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106436946A (en) * | 2016-10-14 | 2017-02-22 | 潘伟松 | Noise reducing crystal and noise reducing wall |
| CN106436946B (en) * | 2016-10-14 | 2019-08-27 | 潘伟松 | A kind of noise reduction crystal and noise reduction wall |
| CN107424595A (en) * | 2017-05-31 | 2017-12-01 | 青岛众瑞智能仪器有限公司 | High flow rate sampling environment air equipment muffler |
| CN107424595B (en) * | 2017-05-31 | 2023-06-23 | 青岛众瑞智能仪器股份有限公司 | Silencer of high-flow-rate ambient air sampling device |
| CN107503822A (en) * | 2017-09-21 | 2017-12-22 | 永嘉县荣信科技有限公司 | A kind of automobile exhaust muffler |
| CN107503822B (en) * | 2017-09-21 | 2023-12-01 | 重庆广亚机械制造有限公司 | Automobile exhaust silencer |
| CN107468040A (en) * | 2017-10-10 | 2017-12-15 | 四川大学 | Acoustic hood with damping noise reduction, the whirlpool diversion function that disappears |
| CN107468040B (en) * | 2017-10-10 | 2023-05-23 | 四川大学 | Sound insulation cover with vibration and noise reduction, vortex eliminating and flow guiding functions |
| CN108966592A (en) * | 2018-07-06 | 2018-12-07 | 合肥格骄电子科技有限公司 | A kind of noiseless communication apparatus |
| CN108966592B (en) * | 2018-07-06 | 2020-12-22 | 浙江如裕纺织科技股份有限公司 | Noiseless communication equipment |
| CN113958386A (en) * | 2021-12-22 | 2022-01-21 | 诸城市大路机械有限公司 | Exhaust device with silencing function |
| CN113958386B (en) * | 2021-12-22 | 2022-02-25 | 诸城市大路机械有限公司 | Exhaust device with silencing function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130313 |