CN202381408U - Silencer - Google Patents
Silencer Download PDFInfo
- Publication number
- CN202381408U CN202381408U CN2011204627413U CN201120462741U CN202381408U CN 202381408 U CN202381408 U CN 202381408U CN 2011204627413 U CN2011204627413 U CN 2011204627413U CN 201120462741 U CN201120462741 U CN 201120462741U CN 202381408 U CN202381408 U CN 202381408U
- Authority
- CN
- China
- Prior art keywords
- silencer
- layer
- pore plate
- sleeved
- small hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model relates to the field of a silencer and provides the silencer capable of being used for a centrifugal air blower. The silencer is characterized in that a middle layer pore plate is sleeved outside a small hole spraying barrel to form a first layer resonance cavity; an outer layer pore plate is sleeved outside the middle layer pore plate to form a second layer resonance cavity; and a high-density steel wire net is welded on the inner wall surface of the small hole spraying barrel by using the butt-welding technology, and a resistance silencing section is sleeved on the outermost layer. With the adoption of the technical scheme, the structure of the silencer is compacted, and the silencer has the advantages of small volume, light weight and high silencing amount compared with the same type of air exhausting amount emptying silencers; and meanwhile, the silencer has the characteristics of good manufacturability, strong commonality and the like in the structural mode.
Description
Technical field
The utility model relates to the silencing apparatus field, is a kind of silencing apparatus that can be used for centrifugal blower.
Background technique
In large-scale centrifugal bulging pressure fan using process; Because of process require or equipment debugging maintenance etc. need can be with gas exhaust emptying when the blower fan proper functioning; Emptying gas is because of it has high pressure, high flow rate produces powerful air-flow exhaust sound; This type of exhaust sound frequency spectrum is wide, sound level is high, pollution range is big, and its noise level can be up to 130-140dB (A) sometimes.By conventional composite type emptying muffler design method; When the design high pressure big air displacement emptying silencing apparatus because of receiving the noise elimination structure parameter like the restriction of numerous factors such as punching rate, aperture, acoustic absorptivity, relative specific acoustic impedance, the resonant cavity degree of depth; Make that acoustic wave filter structure is oversize, weight is big, the strength and stiffness of complex structure, muffler body required high a series of problem, causes finally that manufacture cost is high, less economical, the market competitiveness is low.
Summary of the invention
The purpose of the utility model is that a kind of silencing apparatus that can be used for centrifugal blower will be provided, and has adopted three kinds of noise-cancelling theorys, divides three grades exhaust sound is successively eliminated the noise, thereby the high-pressure high-flow exhaust sound is reduced in limited length range fully.
The technological scheme of the utility model is: it is characterized in that outside the micropore jet tube, being with the mesosphere orifice plate; Form the first layer resonant cavity; The mesosphere orifice plate is with outer orifice outward; Form second layer resonator chamber, the high density steel silk screen adopts the butt-joint technology to be welded on micropore jet tube internal face, and the resistance noise reduction section is sleeved on outermost surface.
Owing to adopted technique scheme, make this acoustic wave filter structure compact, relatively to have a volume little, in light weight with similar air displacement emptying silencing apparatus, and sound deadening capacity is high, on mode of structure, has characteristics such as good manufacturability, highly versatile simultaneously.
Description of drawings
Fig. 1 is the structural representation of the utility model.
In the drawings: 1, resistance noise reduction section; 2, micropore jet tube; 3, mesosphere orifice plate; 4, outer orifice; 5, high density steel silk screen.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further described.
In Fig. 1, the micropore jet tube 2 outer mesosphere orifice plates 3 that are with are formed the first layer resonant cavity; The mesosphere orifice plate 3 outer outer orifices 4 that are with; Form second layer resonator chamber, high density steel silk screen 5 adopts the butt-joint technology to be welded on micropore jet tube 2 internal faces, and resistance noise reduction section 1 is sleeved on outermost surface.
Air communication is crossed suction port entering silencing apparatus and is carried out first step noise reduction and shift frequency through the 2 outside diffusions of micropore jet tube; Air-flow gets into double-deck resonator chamber and in the resonant frequency section of design, produces the resonance noise reduction and reduces airspeed with the air-flow diffusion subsequently, and last air-flow compiles through resistance noise reduction section 1 and carries out the 3rd step noise reduction and from the outlet discharge.
Claims (1)
1. silencing apparatus; It is characterized in that outside micropore jet tube (2), being with mesosphere orifice plate (3); Form the first layer resonant cavity, the outer outer orifice (4) that is with of mesosphere orifice plate (3) is formed second layer resonator chamber; High density steel silk screen (5) adopts the butt-joint technology to be welded on micropore jet tube (2) internal face, and resistance noise reduction section (1) is sleeved on outermost surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204627413U CN202381408U (en) | 2011-11-14 | 2011-11-14 | Silencer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204627413U CN202381408U (en) | 2011-11-14 | 2011-11-14 | Silencer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202381408U true CN202381408U (en) | 2012-08-15 |
Family
ID=46629913
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204627413U Expired - Lifetime CN202381408U (en) | 2011-11-14 | 2011-11-14 | Silencer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202381408U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103104560A (en) * | 2011-11-14 | 2013-05-15 | 湖北双剑鼓风机制造有限公司 | Silencer |
-
2011
- 2011-11-14 CN CN2011204627413U patent/CN202381408U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103104560A (en) * | 2011-11-14 | 2013-05-15 | 湖北双剑鼓风机制造有限公司 | Silencer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: HUBEI SHUANGJIAN BLOWER PRODUCTION CO., LTD. Free format text: FORMER NAME: SHUANGJIAN BLOWER MFG. CO., LTD., HUBEI |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 432721 Hubei city of Guangshui Province Economic and Technological Development Zone (Hubei Shuangjian blower manufacturing Co. Ltd.) Patentee after: Hubei Shuangjian Blower Production Co., Ltd. Address before: 432721 Hubei city of Guangshui Province Economic and Technological Development Zone (Hubei Shuangjian blower manufacturing Co. Ltd.) Patentee before: Hubei Shuangjian Blower Production Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20120815 |
|
| CX01 | Expiry of patent term |