CN202612216U - Press-in type axial flow fan side air inlet noise-reducing silencing device for tunnel construction - Google Patents
Press-in type axial flow fan side air inlet noise-reducing silencing device for tunnel construction Download PDFInfo
- Publication number
- CN202612216U CN202612216U CN 201220274697 CN201220274697U CN202612216U CN 202612216 U CN202612216 U CN 202612216U CN 201220274697 CN201220274697 CN 201220274697 CN 201220274697 U CN201220274697 U CN 201220274697U CN 202612216 U CN202612216 U CN 202612216U
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- noise reduction
- fair water
- water cone
- flow guide
- side air
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Abstract
The utility model discloses a press-in type axial flow fan side air inlet noise-reducing silencing device for tunnel construction. The noise-reducing silencing device consists of a flange which is connected with an air inlet end of a ventilator, a flow collecting cylinder and a flow guide device, wherein a mouse cage type flow guide cap bracket is arranged at the outer end of the flow collecting cylinder; a flow guide cap is arranged on the outer end face of the flow guide cap bracket; an air inlet mesh cover is arranged at the periphery of the mouse cage type flow guide cap bracket; an axial flow guide silencing cone is arranged in the center of the flow collecting cylinder; and sound absorbing materials are filled in the flow guide silencing cone and the flow guide cap. Air flow is converged with side air flow along the curve of the flow guide cap, and enters the noise-reducing silencing device along the outer circumference direction of the mouse cage type flow guide cap bracket, and noise can be reduced by about 10 dB.
Description
Affiliated technical field
The utility model relates to the silencer of a kind of tunnel construction with booster, is that a kind of tunnel construction is with forced axial-flow blower side air intake noise reduction silencer specifically.
Background technique
Forced axial flow booster is air-supply, an oxygenation capital equipment commonly used in the tunnel construction.General ventilator intake airflow direction is parallel to the direction of ventilator running shaft, reduces the import noise through afflux, rectification.This structure reflection noise is big, noise reduction is not obvious, and is bigger to the Environmental Conditions influence, bigger to construction workman's physical impairment; Long-term work, the staff can produce tinnitus, dizziness, weakness of limbs, absent minded, easily occupation disease such as ignition for no reason.In order to address this problem, the researcher generally increases mode noise reductions such as resistance through sound absorption, but its most complex manufacturing technology are difficult to carry out.
Summary of the invention
The purpose of the utility model is exactly to overcome oneself the deficiency in the technology is arranged, and provides a kind of simple in structure, is convenient to maintenance, and effective runtime is long, and the tunnel construction of good muffling effect is with forced axial-flow blower side air intake noise reduction silencer.
The utility model solves the technological scheme that its technical problem adopted: design a kind of tunnel construction with forced axial-flow blower side air intake noise reduction silencer; Change the suction direction of air-flow, by forming with ventilator inlet end flange connecting, afflux tube and flow guide device.The fair water cone support of mouse cage shape is equipped with in afflux tube outer end; The fair water cone support is equipped with fair water cone on the exterior edge face; On the mouse cage shape fair water cone support outer circumferential face air inlet guard is installed, axial water conservancy diversion noise reduction awl is equipped with at afflux tube center, and sound absorbing material is equipped with in water conservancy diversion noise reduction awl and fair water cone inside.Fair water cone has covered mouse cage shape fair water cone support exterior edge face for the streamline shape, on itself and the mouse cage shape fair water cone support exterior edge face reticulate perforation plate is housed also.Water conservancy diversion noise reduction poppet surface is processed by reticulate perforation plate, and breech face is detachable.The inner sound absorbing material of water conservancy diversion noise reduction awl and fair water cone is the glass silk flosssilk wadding.
The beneficial effect of the utility model is; Distinguished and admirable curve along fair water cone; Get into the noise reduction silencer with distinguished and admirable converging from mouse cage shape fair water cone support excircle direction of side, a part of reflecting background is sucked by fair water cone and water conservancy diversion noise reduction awl, the direction that distinguished and admirable edge is parallel to the ventilator running shaft derives; Through test comparison, noise can reduce about 10dB.
Description of drawings
Fig. 1 is the internal structure generalized section of the utility model.
Fig. 2 is the axial view of the utility model.
Embodiment
Make tunnel construction with forced axial-flow blower side air intake noise reduction silencer, change the suction direction of air-flow, by forming with ventilator inlet end flange connecting 6, afflux tube 5 and flow guide device.The fair water cone support 4 of mouse cage shape is equipped with in afflux tube 5 outer ends; The fair water cone support is equipped with fair water cone 2 on 4 exterior edge faces; On mouse cage shape fair water cone support 4 outer circumferential faces air inlet guard 3 is installed; Axial water conservancy diversion noise reduction awl 7 is equipped with at afflux tube 5 centers, and water conservancy diversion noise reduction awl 7 is equipped with sound absorbing material 1,8 with fair water cone 2 inside.Fair water cone 2 has covered mouse cage shape fair water cone support 4 exterior edge faces for the streamline shape, on itself and mouse cage shape fair water cone support 4 exterior edge faces reticulate perforation plate is housed also.The water conservancy diversion noise reduction is bored 7 surfaces and is processed by reticulate perforation plate, and breech face is detachable.Water conservancy diversion noise reduction awl 7 is the glass silk flosssilk wadding with fair water cone 2 inner sound absorbing materials.Distinguished and admirable curve along fair water cone 2 gets into the noise reduction silencer with distinguished and admirable converging from mouse cage shape fair water cone support 4 excircle directions of side, and noise can reduce about 10dB.
Claims (4)
1. tunnel construction is with forced axial-flow blower side air intake noise reduction silencer; By forming with ventilator inlet end flange connecting, afflux tube and flow guide device; It is characterized in that: the fair water cone support of mouse cage shape is equipped with in afflux tube outer end, and the fair water cone support is equipped with fair water cone on the exterior edge face, on the mouse cage shape fair water cone support outer circumferential face air inlet guard is installed; Axial water conservancy diversion noise reduction awl is equipped with at afflux tube center, and sound absorbing material is equipped with in water conservancy diversion noise reduction awl and fair water cone inside.
2. tunnel construction as claimed in claim 1 is with forced axial-flow blower side air intake noise reduction silencer; It is characterized in that: fair water cone has covered mouse cage shape fair water cone support exterior edge face for the streamline shape, on itself and the mouse cage shape fair water cone support exterior edge face reticulate perforation plate is housed also.
3. tunnel construction as claimed in claim 1 is with forced axial-flow blower side air intake noise reduction silencer, and it is characterized in that: water conservancy diversion noise reduction poppet surface is processed by reticulate perforation plate, and breech face is detachable.
4. tunnel construction as claimed in claim 1 is characterized in that with forced axial-flow blower side air intake noise reduction silencer: the inner sound absorbing material of water conservancy diversion noise reduction awl and fair water cone is the glass silk flosssilk wadding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220274697 CN202612216U (en) | 2012-06-02 | 2012-06-02 | Press-in type axial flow fan side air inlet noise-reducing silencing device for tunnel construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220274697 CN202612216U (en) | 2012-06-02 | 2012-06-02 | Press-in type axial flow fan side air inlet noise-reducing silencing device for tunnel construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202612216U true CN202612216U (en) | 2012-12-19 |
Family
ID=47345920
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220274697 Expired - Lifetime CN202612216U (en) | 2012-06-02 | 2012-06-02 | Press-in type axial flow fan side air inlet noise-reducing silencing device for tunnel construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202612216U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103644132A (en) * | 2013-12-26 | 2014-03-19 | 山西巨龙风机有限公司 | Mining local ventilation machine with detachable plastic structure |
| CN105090130A (en) * | 2014-05-13 | 2015-11-25 | 枣庄福德通用机械有限公司 | External diameter air intake noise reduction mechanism for axial flow fan |
| CN106089812A (en) * | 2016-08-12 | 2016-11-09 | 山西巨龙风机有限公司 | A kind of boiler blower side suction silencer |
| CN107676308A (en) * | 2017-10-21 | 2018-02-09 | 中船澄西船舶修造有限公司 | Air inlet denoising device |
-
2012
- 2012-06-02 CN CN 201220274697 patent/CN202612216U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103644132A (en) * | 2013-12-26 | 2014-03-19 | 山西巨龙风机有限公司 | Mining local ventilation machine with detachable plastic structure |
| CN105090130A (en) * | 2014-05-13 | 2015-11-25 | 枣庄福德通用机械有限公司 | External diameter air intake noise reduction mechanism for axial flow fan |
| CN106089812A (en) * | 2016-08-12 | 2016-11-09 | 山西巨龙风机有限公司 | A kind of boiler blower side suction silencer |
| CN107676308A (en) * | 2017-10-21 | 2018-02-09 | 中船澄西船舶修造有限公司 | Air inlet denoising device |
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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: 20121219 |