CN202866938U - Impedance combined type muffler - Google Patents
Impedance combined type muffler Download PDFInfo
- Publication number
- CN202866938U CN202866938U CN 201220574993 CN201220574993U CN202866938U CN 202866938 U CN202866938 U CN 202866938U CN 201220574993 CN201220574993 CN 201220574993 CN 201220574993 U CN201220574993 U CN 201220574993U CN 202866938 U CN202866938 U CN 202866938U
- Authority
- CN
- China
- Prior art keywords
- cylinder body
- outer cylinder
- throttle pipe
- silencing apparatus
- cylindrical shell
- 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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Abstract
The utility model discloses an impedance combined type muffler which comprises an outer cylinder body. An air outlet is formed in the upper portion of the outer cylinder body. Sound absorption cotton is arranged on the inner wall of the outer cylinder body. A small hole spouting cylinder body is arranged in the outer cylinder body, spouting holes are formed in the side wall of the outer cylinder body, and a cavity is formed between the outer cylinder body and the small hole spouting cylinder body. A throttle pipe is arranged in the small hole spouting cylinder body, a throttle orifice plate is arranged on the lateral side of the throttle pipe, and a cavity is formed between the small hole spouting cylinder body and the throttle pipe. The throttle pipe is communicated with an air inlet. The impedance combined type muffler is simple in structure and prone to achievement. After high pressure airflow is throttled and depressurized through the throttle pipe, low-frequency noise is eliminated by the small hole spouting cylinder body, and finally high-frequency noise is eliminated by the sound absorption cotton on the inner side wall of the outer cylinder body. The impedance combined type muffler is good in noise elimination effect and suitable for popularization.
Description
Technical field
The utility model relates to a kind of silencing apparatus, relates in particular to a kind of impedance complex formula silencing apparatus.
Background technique
Silencing apparatus is to stop sound transmission and a kind of device of allowing air-flow to pass through, is the important measures of eliminating air power noise; Silencing apparatus generally is installed in the low noise device that falls on the air-flow path of aerodynamic force equipment or in the inlet and exhaust system, and it can stop the propagation of sound wave, allows air-flow to pass through, and is the effective tool of control noise.
At present, silencing apparatus on the market mainly contains two kinds of dissipative muffler and reactive mufflers, dissipative muffler is the sound absorption of utilizing muffler material or sound absorption structure, make along the noise of pipe transmmision and decay with distance, thereby reach the noise elimination purpose, this class silencing apparatus has good soundproof effect to high-frequency noise, and the low frequency acoustic attenuation performance is relatively poor, the high-temp waste gas of in addition discharging owing to the easy launched machine of sound-absorbing material melts, therefore working life short, and easily by obstructions such as carbon deposit, greasy filth and reduction or lose the noise elimination effect; And reactive muffler is to connect resonant cavity by means of the unexpected expansion of pipeline section or contraction or side, makes along the sound wave of some frequency of pipe transmmision to reflect back to Sounnd source direction in sudden change place, thereby reaches the noise elimination purpose.It relatively is applicable to eliminate the Low Medium Frequency noise, and relatively poor to the noise elimination effect of high-frequency noise.Therefore, the silencing apparatus soundproof effect of single character is relatively poor, can't meet the demands.
The model utility content
The purpose of this utility model is for the problems referred to above, and a kind of impedance complex formula silencing apparatus is provided, to solve the relatively poor problem of silencing apparatus soundproof effect of existing single character.
The purpose of this utility model is to be achieved through the following technical solutions:
A kind of impedance complex formula silencing apparatus, comprise outer cylinder body, described outer cylinder body top is provided with exhaust port, be provided with sound absorption on its inwall cotton, be provided with the micropore jet cylindrical shell that has spray orifice on the sidewall in the outer cylinder body, and form a cavity between outer cylinder body and the micropore jet cylindrical shell, be provided with the throttle pipe that restricting orifice is housed on the sidewall in the described micropore jet cylindrical shell, and form a cavity between micropore jet cylindrical shell and the throttle pipe, described throttle pipe is communicated with intake grill.
Further, described outer cylinder body top is provided with rainhat.
Further, the two ends of described outer cylinder body are provided with hanger.
Further, described sound absorption cotton is super glass wool.
Further, the cavity bottom that forms between described micropore jet cylindrical shell and the outer cylinder body is provided with sewage draining exit.
The beneficial effects of the utility model are that described impedance complex formula acoustic wave filter structure is simple, is easy to realize, high pressure draught is eliminated low-frequency noise through the micropore jet cylindrical shell again behind the throttle pipe reducing pressure by regulating flow, finally by the cotton high-frequency noise of eliminating of the sound absorption of outer cylinder body madial wall, soundproof effect is good, the suitable popularization.
Description of drawings
Fig. 1 is the plan view of the utility model impedance complex formula silencing apparatus;
Fig. 2 is the plan view of the utility model impedance complex formula silencing apparatus.
Among the figure:
1, outer cylinder body; 2, throttle pipe; 3, micropore jet cylindrical shell; 4, sound absorption is cotton; 5, hanger; 6, rainhat; 7, sewage draining exit; 8, intake grill.
Embodiment
Further specify the technical solution of the utility model below in conjunction with accompanying drawing and by embodiment.
Please refer to Figure 1 and Figure 2, Fig. 1 is the plan view of the utility model impedance complex formula silencing apparatus; Fig. 2 is the plan view of the utility model impedance complex formula silencing apparatus.In the present embodiment, a kind of impedance complex formula silencing apparatus, comprise outer cylinder body 1, the two ends of described outer cylinder body 1 are provided with hanger 5, and its top is provided with rainhat 6, top is provided with exhaust port, be provided with sound absorption cotton 4 on the inwall of outer cylinder body 1, described sound absorption cotton 4 is super glass wool, be provided with the micropore jet cylindrical shell 3 that has spray orifice on the sidewall in the outer cylinder body 1, form a cavity between outer cylinder body 1 and the micropore jet cylindrical shell 3, the cavity bottom that forms between described micropore jet cylindrical shell 3 and the outer cylinder body 1 is provided with sewage draining exit 7, be provided with the throttle pipe 2 that restricting orifice is housed on the sidewall in the described micropore jet cylindrical shell 3, and form a cavity between micropore jet cylindrical shell 3 and the throttle pipe 2, described throttle pipe 2 is communicated with intake grill 8.
During the utility model work, high pressure draught enters throttle pipe 2 from intake grill 8, when high pressure draught during by the restricting orifice on throttle pipe 2 sidewalls, its Pressure Drop is to the pressure that is allowed to, the spray orifice of air-flow on micropore jet cylindrical shell 3 sidewalls by reducing pressure by regulating flow, significantly eliminate Middle and low frequency noise, air-flow is by behind the spray orifice, enter outer cylinder body 1, owing to being provided with sound absorption cotton 4 on the madial wall of outer cylinder body 1, significantly eliminate high-frequency noise, thereby guarantee that acoustical absorptivity reaches best and satisfies requirement and the standard of noise abatement.
Above embodiment has just set forth basic principle of the present utility model and characteristic; the utility model is not limited by above-described embodiment; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various variations and change, and these variations and change all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (5)
1. impedance complex formula silencing apparatus, comprise outer cylinder body, it is characterized in that: described outer cylinder body top is provided with exhaust port, be provided with sound absorption on its inwall cotton, be provided with the micropore jet cylindrical shell that has spray orifice on the sidewall in the outer cylinder body, and form a cavity between outer cylinder body and the micropore jet cylindrical shell, be provided with the throttle pipe that restricting orifice is housed on the sidewall in the described micropore jet cylindrical shell, and form a cavity between micropore jet cylindrical shell and the throttle pipe, described throttle pipe is communicated with intake grill.
2. impedance complex formula silencing apparatus according to claim 1, it is characterized in that: described outer cylinder body top is provided with rainhat.
3. impedance complex formula silencing apparatus according to claim 1 and 2, it is characterized in that: the two ends of described outer cylinder body are provided with hanger.
4. impedance complex formula silencing apparatus according to claim 1 is characterized in that: described sound absorption is cotton to be super glass wool.
5. impedance complex formula silencing apparatus according to claim 1, it is characterized in that: the cavity bottom that forms between described micropore jet cylindrical shell and the outer cylinder body is provided with sewage draining exit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220574993 CN202866938U (en) | 2012-11-03 | 2012-11-03 | Impedance combined type muffler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220574993 CN202866938U (en) | 2012-11-03 | 2012-11-03 | Impedance combined type muffler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202866938U true CN202866938U (en) | 2013-04-10 |
Family
ID=48033662
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220574993 Expired - Lifetime CN202866938U (en) | 2012-11-03 | 2012-11-03 | Impedance combined type muffler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202866938U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105987252A (en) * | 2015-02-10 | 2016-10-05 | 厦门嘉达声学技术有限公司 | Compound exhausting emptying silencer |
| CN106321194A (en) * | 2016-11-01 | 2017-01-11 | 四川三元环境治理股份有限公司 | Compound steam exhausting muffler |
| CN111312204A (en) * | 2020-03-30 | 2020-06-19 | 江苏天宇石化冶金设备有限公司 | Emptying silencer |
-
2012
- 2012-11-03 CN CN 201220574993 patent/CN202866938U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105987252A (en) * | 2015-02-10 | 2016-10-05 | 厦门嘉达声学技术有限公司 | Compound exhausting emptying silencer |
| CN106321194A (en) * | 2016-11-01 | 2017-01-11 | 四川三元环境治理股份有限公司 | Compound steam exhausting muffler |
| CN111312204A (en) * | 2020-03-30 | 2020-06-19 | 江苏天宇石化冶金设备有限公司 | Emptying silencer |
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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 |
Granted publication date: 20130410 |
|
| CX01 | Expiry of patent term |