CN204805098U - Roots's fan silencing device for air outlet - Google Patents
Roots's fan silencing device for air outlet Download PDFInfo
- Publication number
- CN204805098U CN204805098U CN201520304657.7U CN201520304657U CN204805098U CN 204805098 U CN204805098 U CN 204805098U CN 201520304657 U CN201520304657 U CN 201520304657U CN 204805098 U CN204805098 U CN 204805098U
- Authority
- CN
- China
- Prior art keywords
- outer tube
- exhaust outlet
- air outlet
- inner tube
- tube
- 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 - Fee Related
Links
- 230000030279 gene silencing Effects 0.000 title abstract 5
- 239000004698 Polyethylene Substances 0.000 claims abstract description 4
- -1 polyethylene Polymers 0.000 claims abstract description 4
- 229920000573 polyethylene Polymers 0.000 claims abstract description 4
- 239000000523 sample Substances 0.000 claims abstract description 4
- 230000003584 silencer Effects 0.000 claims description 15
- 150000001875 compounds Chemical class 0.000 claims description 3
- 230000010355 oscillation Effects 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical class [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 239000000428 dust Substances 0.000 description 4
- 229910000831 Steel Chemical class 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000010959 steel Chemical class 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
Landscapes
- Applications Or Details Of Rotary Compressors (AREA)
- Exhaust Silencers (AREA)
- Jet Pumps And Other Pumps (AREA)
Abstract
The utility model discloses a roots's fan silencing device for air outlet, air outlet including roots's fan, silencing device is connected to the air outlet, and silencing device includes inner tube and outer tube, the inner tube adopts the softer hose of pipe wall, and the outer tube adopts the polyethylene complex that the pipe wall is harder to manage, the internal diameter that the air outlet is followed outside to inner tube and outer tube is all increasing, and inner tube and outer tube both ends are sealed the gap that makes between inner tube and the outer tube mutually and are formed airtight cavity, and silencing device is the updraft ventilator on setting and outer tube still, and updraft ventilator is connected with the barometer that sets up on the outer tube, and barometer probe end extends to in the airtight cavity. Adopt the utility model discloses a keeping away from of air oscillation generation sound is considered in the design, adopts the hose as the inner tube, and the outside internal diameter of while inner tube and outer tube edge air outlet is all increasing, and the wind speed is more and more slower to prevent the friction of air and pipe wall, with the noise reduction.
Description
Technical field
The utility model relates to a kind of silencer, particularly a kind of roots blower exhaust outlet silencer.
Background technique
In roots blower field, exhaust outlet noise Producing reason is mainly that wind speed is very fast, and exhaust outlet tube wall is comparatively hard, and air and its friction produce noise, or owing to there is granular dust in air, collide with tube wall, produce noise.
Summary of the invention
Goal of the invention: technical problem to be solved in the utility model is the problem that existing roots blower exhaust outlet noise is larger.
Technological scheme: the utility model adopts following technological scheme: a kind of roots blower exhaust outlet silencer, comprise the exhaust outlet of roots blower, described exhaust outlet joint noise reduction device, silencer comprises inner and outer tubes, described interior pipe adopts the flexible pipe that tube wall is softer, outer tube adopts the polyethylene compound pipe that tube wall is harder, and described inner and outer tubes are all increasing along the internal diameter that exhaust outlet is outside.
As optimization, described inner and outer tubes two ends are sealed to each other makes the gap between inner and outer tubes form airtight cavity.
As optimization, described silencer also comprises the extractor fan be arranged on outer tube, and extractor fan is connected with the gas manometer be arranged on outer tube, and gas manometer end of probe extends in airtight cavity.
Working principle: operationally, air outlet speed is fast, but along with inner and outer tubes all increasing along the internal diameter that exhaust outlet is outside, wind speed reduces, the friction of air and tube wall is more and more less, and the noise in air diminishes, again because interior pipe adopts the flexible pipe that tube wall is softer, its iron and steel class body larger relative to hardness, not easily produce vibration, the noise of body is just little, simultaneously, owing to being flexible pipe, it is also little that granular dust collides the noise produced.
Beneficial effect: the utility model compared with prior art: inner and outer tubes are all increasing along the internal diameter that exhaust outlet is outside, the wind speed of exhaust outlet can be more and more lower away from the wind speed of exhaust outlet one end to silencer, the friction that air and interior pipe produce is more and more less, noise will diminish, simultaneously because interior pipe adopts the flexible pipe that tube wall is softer, its iron and steel class body larger relative to hardness, not easily produce vibration, the noise of body is just little, simultaneously, owing to being flexible pipe, it is also little that granular dust collides the noise produced, moreover, vacuumize between the inner and outer pipe sections, with isolated noise transmission, also be a solution that the utility model provides.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
The utility model provides following embodiment.
A kind of roots blower exhaust outlet silencer as shown in Figure 1, comprise the exhaust outlet 2 of roots blower 1, described exhaust outlet 2 joint noise reduction device, silencer comprises interior pipe 3 and outer tube 4, the flexible pipe that described interior pipe 3 adopts tube wall softer, the polyethylene compound pipe that outer tube 4 adopts tube wall harder, described interior pipe 3 and outer tube 4 all increasing along the internal diameter that exhaust outlet is outside.Described interior pipe 3 and the outer tube 4 two ends gap formation airtight cavity 5 made between interior pipe 3 and outer tube 4 sealed to each other.Described silencer also comprises the extractor fan 6 be arranged on outer tube 4, and extractor fan 6 is connected with the gas manometer 7 be arranged on outer tube 4, and gas manometer 7 end of probe extends in airtight cavity 5.
Operationally, exhaust outlet 2 air-out speed is fast, but along with interior pipe 3 and outer tube 4 all increasing along the internal diameter that exhaust outlet 2 is outside, wind speed reduces, the friction of air and interior pipe 3 tube wall is more and more less, and the noise in air diminishes, again due to flexible pipe that interior pipe 3 adopts tube wall softer, its iron and steel class body larger relative to hardness, not easily produce vibration, the noise of body is just little, simultaneously, owing to being flexible pipe, it is also little that granular dust collides the noise produced.
The utility model provides a kind of thinking and method; the method and access of this technological scheme of specific implementation is a lot; the above is only preferred implementation of the present utility model; should be understood that; for those skilled in the art, under the prerequisite not departing from the utility model principle, some improvements and modifications can also be made; these improvements and modifications also should be considered as protection domain of the present utility model, and all available prior art of each constituent element not clear and definite in the present embodiment is realized.
Claims (3)
1. a roots blower exhaust outlet silencer, comprise the exhaust outlet of roots blower, it is characterized in that: described exhaust outlet joint noise reduction device, silencer comprises inner and outer tubes, described interior pipe adopts the flexible pipe that tube wall is softer, outer tube adopts the polyethylene compound pipe that tube wall is harder, and described inner and outer tubes are all increasing along the internal diameter that exhaust outlet is outside.
2. roots blower exhaust outlet silencer according to claim 1, is characterized in that: described inner and outer tubes two ends are sealed to each other makes the gap between inner and outer tubes form airtight cavity.
3. roots blower exhaust outlet silencer according to claim 2, it is characterized in that: described silencer also comprises the extractor fan be arranged on outer tube, extractor fan is connected with the gas manometer be arranged on outer tube, and gas manometer end of probe extends in airtight cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520304657.7U CN204805098U (en) | 2015-05-08 | 2015-05-08 | Roots's fan silencing device for air outlet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520304657.7U CN204805098U (en) | 2015-05-08 | 2015-05-08 | Roots's fan silencing device for air outlet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204805098U true CN204805098U (en) | 2015-11-25 |
Family
ID=54589933
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520304657.7U Expired - Fee Related CN204805098U (en) | 2015-05-08 | 2015-05-08 | Roots's fan silencing device for air outlet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204805098U (en) |
-
2015
- 2015-05-08 CN CN201520304657.7U patent/CN204805098U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151125 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |