CN203201808U - Roots blower pipeline noise reduction device - Google Patents
Roots blower pipeline noise reduction device Download PDFInfo
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- CN203201808U CN203201808U CN 201320229609 CN201320229609U CN203201808U CN 203201808 U CN203201808 U CN 203201808U CN 201320229609 CN201320229609 CN 201320229609 CN 201320229609 U CN201320229609 U CN 201320229609U CN 203201808 U CN203201808 U CN 203201808U
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- wool
- roots blower
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- sound
- centrifugally glass
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Abstract
The utility model discloses a Roots blower pipeline noise reduction device which comprises a silencing box body and an interior sound absorbing layer covering a pipeline. The interior sound absorbing layer is arranged inside the silencing box body, an interval cavity is formed between the inner wall of the silencing box body and the sound absorbing layer; a secondary-silencing combined-type structure is formed by the silencing box body, the interval cavity and the interior sound absorbing layer; the interior sound absorbing layer comprises three-layer structures, namely, a galvanized sheet, high-density centrifugal glass wool and low-density centrifugal glass wool from outside to inside; the silencing box body comprises four layer structures, namely, a surface protecting layer, a sound insulation layer, a sound absorbing layer and an inner plate from outside to inside. Due to the adoption of structural design of the secondary-silencing combined-type structure, the Roots blower pipeline noise reduction device solves that problems that inlet pipelines and outlet pipelines are big in noise and wide in radiation range when the Roots blower pipeline noise reduction device works, obviously reduces noise pollution to the environment, and is suitable for being widely popularized and used in places where noise pollution is serious.
Description
Technical field
The utility model relates to a kind of denoising device, particularly a kind of Roots blower pipe noise reducing device.
Background technique
Usually Roots blower is in the process of using, and the import and export pipeline noise of Roots blower is larger, and the radiation scope of noise is wide, if do not take any noise reduction measure to exert an influence to the physically and mentally healthy of staff and other people normal life.Yet, at present in the industrial production when using Roots blower, the Roots blower large at noise, that radiation scope is wide is imported and exported the pipeline place and is not taked any noise reduction measure, this has just caused the actual discharge of a lot of industrial enterprises noise can't reach the standard of Industrial Enterprise Factory Boundary ambient noise discharging, thereby cause the Industrial Enterprise Factory Boundary environmental pollution serious, produce serious influence for the physically and mentally healthy and normal daily life of people.Large in order better to reduce Roots blower import and export pipeline noise when working, the problem that radiation scope is wide better reduces noise pollution, and develops especially this product.
The model utility content
The technical problem that the utility model solves has provided a kind of Roots blower pipe noise reducing device, it is large that this model utility has solved existing Roots blower import and export pipeline noise when work, the problem that radiation scope is wide can obviously reduce noise pollution to the harm of environment.
For solving the problems of the technologies described above, a kind of Roots blower pipe noise reducing of the utility model device, it is characterized in that, the inside sound-absorption layer that comprises the noise elimination casing and be wrapped in pipeline external, described inner sound-absorption layer is arranged at the inside of noise elimination casing, form a spaced cavities between the inwall of described noise elimination casing and sound-absorption layer, described noise elimination casing, spaced cavities and inner sound-absorption layer consist of secondary noise elimination composite structure jointly.
Described inner sound-absorption layer comprises three-decker, is followed successively by from outside to inside galvanized sheet, high density centrifugally glass-wool and low density centrifugally glass-wool, and described galvanized sheet is wrapped in the outside of low density centrifugally glass-wool and high density centrifugally glass-wool.
Described noise elimination casing comprises four-layer structure, is followed successively by from outside to inside armour layer, Sound insulating layer, sound-absorption layer and inner panel.
Described protection slab is zinc-plated perforated plate.
Be filled with the centrifugally glass-wool of two-layer different densities in the described sound-absorption layer, the centrifugally glass-wool of described two-layer different densities is respectively high density centrifugally glass-wool and middle density centrifugation glass wool, and described high density centrifugally glass-wool is arranged at the side near described inner panel.
Be filled with resistance combustion polyurethane foam in the described puigging.
The beneficial effects of the utility model are:
1. this model utility Roots blower pipe noise reducing device has adopted the design of secondary noise elimination composite structure, this Structured Design has obvious absorbing sound and lowering noise effect, so that the noise emissions that Roots blower produces when work is lower than the emission standard that is not higher than at least defined.
2. import and export the pipeline noise when this model utility efficiently solves Roots blower work large, the problem that radiation scope is wide, have a significant effect for the pollution that improves factory's circle environment, minimizing NOISE ON ENVIRONMENT, be worth wide popularization and application in each serious industrial enterprise of noise pollution.
Description of drawings
The utility model is described in further detail below in conjunction with accompanying drawing:
Fig. 1 is the utility model overall structure sectional view;
Fig. 2 is noise elimination casing partial structurtes sectional views;
Fig. 3 is the structure sectional view of inner sound-absorption layer;
Among the figure: density centrifugation glass wool, 4-spaced cavities among 1-noise elimination casing, 11-armour layer, 12-Sound insulating layer, 121-resistance combustion polyurethane foam, 13-sound-absorption layer, 14-inner panel, 2-pipeline, the inner sound-absorption layer of 3-, 31-galvanized sheet, 32-high density centrifugally glass-wool, 33-low density centrifugally glass-wool, the 34-.
Embodiment
As shown in Figure 1, a kind of Roots blower pipe noise reducing of the utility model device, the inside sound-absorption layer 3 that comprises noise elimination casing 1 and be wrapped in pipeline 2 outsides, described inner sound-absorption layer 3 is arranged at the inside of noise elimination casing 1, form a spaced cavities 4 between the inwall of described noise elimination casing 1 and inner sound-absorption layer 3, described noise elimination casing 1, spaced cavities 4 and inner sound-absorption layer 3 be common to consist of secondary noise elimination composite structures.
Secondary noise elimination composite structure design described above has obvious absorbing sound and lowering noise effect, after noise radiates in the pipeline of Roots blower, at first enter inner sound-absorption layer 3, after the partial noise after inner sound-absorption layer 3 decay penetrates inner sound-absorption layer 3, air damping layer in spaced cavities 4 carries out the secondary noise reduction after being radiated noise elimination casing 3, and noise can reach even be lower than industrial enterprise's noise emission standard of regulation through twice attenuation processing.
Such as Fig. 1, shown in Figure 3, described inner sound-absorption layer 3 comprises three-decker, be followed successively by from outside to inside galvanized sheet 31, high density centrifugally glass-wool 32 and low density centrifugally glass-wool 33, described galvanized sheet is wrapped in the outside of low density centrifugally glass-wool 33 and high density centrifugally glass-wool 32, galvanized sheet adopts hasp to connect, and is easy to operate, connect firmly.
The thickness of the centrifugally glass-wool of two kinds of different densities described above is 50mm, and described low density centrifugally glass-wool 33 is near the outer wall of pipeline 2, and high density centrifugally glass-wool 32 is arranged on the outside of low density centrifugally glass-wool 33.When selecting low density centrifugally glass-wool 33 and high density centrifugally glass-wool 32, can be different according to the noise spectrum of pipeline radiation, select ρ=24kg/m
3And ρ=32kg/m
3Or ρ=32kg/m
3And ρ=60kg/ m
3The combination of centrifugally glass-wool, the large Roots blower of type is selected ρ=32kg/m usually
3And ρ=60kg/m
3The centrifugally glass-wool combination of combination.The combination of the centrifugally glass-wool of two kinds of different densities of employing is better than adopting two kinds of identical high density centrifugally glass-wools combination acoustically effectives, and acoustic absorptivity is high, and especially the acoustically effective of centering high frequency noise is better.
As shown in Figure 2, described noise elimination casing 1 comprises four-layer structure, is followed successively by from outside to inside armour layer 11, Sound insulating layer 12, sound-absorption layer 13 and inner panel 14.
Described armour layer 11 is zinc-plated perforated plate, the thickness of zinc-plated perforated plate is 0.5mm, adopt the zinc-plated perforated plate of 0.5mm to have on the one hand the effect that increases acoustic resistance as armour layer, on the other hand because zinc-plated perforated plate has the characteristics such as lightweight, non-corrosive, so that the service time of armour layer 11 is more lasting, need not frequent replacing.
Be filled with the centrifugally glass-wool of two-layer different densities in the described sound-absorption layer 13, the centrifugally glass-wool of described two-layer different densities is respectively high density centrifugally glass-wool 32 and middle density centrifugation glass wool 34, and described high density centrifugally glass-wool 32 is arranged at the side near described inner panel 14.So design can realize good sound-absorbing except making an uproar effect.In addition, be filled with resistance combustion polyurethane foam 121 in the described puigging 12, can further improve sound-absorbing effect, so that sound-absorbing is better except the effect of making an uproar.
Except the described technical characteristics of above-mentioned specification, be the known technology of those skilled in the art.
Claims (6)
1. Roots blower pipe noise reducing device, it is characterized in that, the inside sound-absorption layer that comprises the noise elimination casing and be wrapped in pipeline external, described inner sound-absorption layer is arranged at the inside of noise elimination casing, form a spaced cavities between the inwall of described noise elimination casing and sound-absorption layer, described noise elimination casing, spaced cavities and inner sound-absorption layer consist of secondary noise elimination composite structure jointly.
2. Roots blower pipe noise reducing device as claimed in claim 1, it is characterized in that, described inner sound-absorption layer comprises three-decker, be followed successively by from outside to inside galvanized sheet, high density centrifugally glass-wool and low density centrifugally glass-wool, described galvanized sheet is wrapped in the outside of low density centrifugally glass-wool and high density centrifugally glass-wool.
3. Roots blower pipe noise reducing device as claimed in claim 1 is characterized in that, described noise elimination casing comprises four-layer structure, is followed successively by from outside to inside armour layer, Sound insulating layer, sound-absorption layer and inner panel.
4. Roots blower pipe noise reducing device as claimed in claim 3 is characterized in that, described protection slab is zinc-plated perforated plate.
5. Roots blower pipe noise reducing device as claimed in claim 3, it is characterized in that, be filled with the centrifugally glass-wool of two-layer different densities in the described sound-absorption layer, the centrifugally glass-wool of described two-layer different densities is respectively high density centrifugally glass-wool and middle density centrifugation glass wool, and described high density centrifugally glass-wool is arranged at the side near described inner panel.
6. Roots blower pipe noise reducing device as claimed in claim 3 is characterized in that, is filled with resistance combustion polyurethane foam in the described puigging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320229609 CN203201808U (en) | 2013-04-28 | 2013-04-28 | Roots blower pipeline noise reduction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320229609 CN203201808U (en) | 2013-04-28 | 2013-04-28 | Roots blower pipeline noise reduction device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203201808U true CN203201808U (en) | 2013-09-18 |
Family
ID=49145920
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320229609 Expired - Lifetime CN203201808U (en) | 2013-04-28 | 2013-04-28 | Roots blower pipeline noise reduction device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203201808U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103244464A (en) * | 2013-04-28 | 2013-08-14 | 山东省章丘鼓风机股份有限公司 | Roots blower pipeline noise reduction device |
| CN104265637A (en) * | 2014-09-16 | 2015-01-07 | 安徽三星环保装备制造有限公司 | Silencing chamber of Roots blower |
| CN104773851A (en) * | 2015-03-23 | 2015-07-15 | 川源(中国)机械有限公司 | Submerged aerator air-intake pipeline noise reducing apparatus |
-
2013
- 2013-04-28 CN CN 201320229609 patent/CN203201808U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103244464A (en) * | 2013-04-28 | 2013-08-14 | 山东省章丘鼓风机股份有限公司 | Roots blower pipeline noise reduction device |
| CN104265637A (en) * | 2014-09-16 | 2015-01-07 | 安徽三星环保装备制造有限公司 | Silencing chamber of Roots blower |
| CN104773851A (en) * | 2015-03-23 | 2015-07-15 | 川源(中国)机械有限公司 | Submerged aerator air-intake pipeline noise reducing apparatus |
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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: 20130918 |