CN203810431U - Rainproof muffle cowl - Google Patents
Rainproof muffle cowl Download PDFInfo
- Publication number
- CN203810431U CN203810431U CN201420246642.5U CN201420246642U CN203810431U CN 203810431 U CN203810431 U CN 203810431U CN 201420246642 U CN201420246642 U CN 201420246642U CN 203810431 U CN203810431 U CN 203810431U
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- China
- Prior art keywords
- rainproof
- sound
- tubular
- chimney
- air outlet
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- 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
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Abstract
The utility model discloses a rainproof muffle cowl which comprises a top cap, a sound-absorbing guide cone, a tubular rainproof sound-absorbing plate, an installation bearing structure and guide sound-absorbing inserts. The top cap is arranged above an air outlet of a chimney. The bottom of the sound-absorbing guide cone is arranged in the top cap while the top faces a flow direction of the air outlet of the chimney. The tubular rainproof sound-absorbing plate is arranged vertically, the upper portion of the tubular rainproof sound-absorbing plate is connected with the edge of the top cap, and the lower portion of the tubular rainproof sound-absorbing plate is lower than the air outlet of the chimney. The installation bearing structure is composed of vertical supporting grooves, cross supporting grooves, upper flanges and lower flanges; the vertical supporting grooves are connected with the top cap and the upper flanges vertically, the cross supporting grooves are connected with the tubular rainproof sound-absorbing plate and the vertical supporting grooves horizontally, the lower flanges are welded to the wall of the chimney, and the upper flanges and the lower flanges are connected through bolts. The rainproof muffle cowl meets both requirements for ventilation and rain proofing, and is high in ventilation efficiency, easy to manufacture and high in sound absorption capacity.
Description
Technical field
The utility model relates to a kind of turncap, is especially arranged on chimney air outlet, has the rainproof noise elimination blast cap of noise elimination, rainproof function simultaneously.
Background technology
The thing of the similar umbrella of chimney rain screen rainhat, the umbrella crown of pyramid type or dome-type and several support bars compositions, be generally used on exhausting pipeline and chimney vertically upward, for preventing that rainwater from entering that pipeline arranges.
For normal discharging waste gas, the waste gas of chimney is often via blower fan pressurization discharge, inevitably by blower fan and noise of equipment via the radiation of chimney air outlet, because the setting position of chimney is higher, without effectively barrier obstruct, cause the interior environment of sizable scope to be around subject to influence of noise, make a big impact to sensitive point for noise.So current way is that fans silencer is first set, after reduction noise, enter again smoke stack emission.But, if the not position of reserved silencer of blower fan machine room will be difficult to reach noise reduction.
Summary of the invention
In order to overcome the impact via the radiation of chimney air outlet of existing blower fan and noise of equipment.The utility model provides a kind of rainproof noise elimination blast cap, this rainproof noise elimination blast cap can not only meet ventilation and prevent the requirement that karaburan, sleet water enchroachment (invasion) are attacked, and there is the function of eliminating chimney air outlet radiated noise, the advantage such as volume is little, lightweight, simple installation, cost are low.
The utility model solves the technical scheme that its technical problem adopts: a kind of rainproof noise elimination blast cap, by top umbrella crown, acoustic absorbing guide cone body, the rainproof acoustic board of tubular, load-carrying construction is installed, water conservancy diversion sound absorption inserted sheet forms.Described top umbrella crown is arranged on chimney air outlet top; At the bottom of the cone of described acoustic absorbing guide cone body, be arranged in the umbrella crown of top, cone point faces the airflow direction of chimney air outlet; Acoustic absorbing guide cone body, because its end sound absorption area is little, its acoustic impedance progressively increases to from the characteristic impedance that approaches air the impedance that approaches porous material, and impedance is progressively increased by little, relatively changes not remarkable.Therefore,, when sound wave is during from end incident, due to the transition gradually of absorbent treatment, the acoustic impedance of material can be mated preferably with the acoustic impedance of air, makes the incident acoustic wave overwhelming majority enter material internal and be absorbed efficiently, has good broad band sound absorption performance.
The rainproof acoustic board of described tubular vertically arranges, and top is connected with top umbrella crown edge, and bottom, lower than chimney air outlet, can prevent that karaburan, sleet water from injecting in chimney effectively.The rainproof acoustic board of tubular bottom is more lower than chimney air outlet, soundproof effect better, but windage is higher.
Described installation load-carrying construction by supporting vertical groove, support translot, upper flange, lower flange and form, support vertical groove and vertically connect top umbrella crown, upper flange, support the rainproof acoustic board of translot level connection joint tubular, support vertical groove, lower flange is welded on chimney wall, and upper flange, lower flange are bolted.
Filling sucting sound material in described acoustic absorbing guide cone body structure, outer cover glass cloth or the plastic sheeting of resistance to marquis, metal mask perforated plate is established on surface.The rainproof acoustic board inwall of described tubular arranges the outer cover glass cloth of sound-absorbing material or the plastic sheeting of resistance to marquis, and metal mask perforated plate is established on surface.When the dust that contains when air-flow, aqueous vapor, oil gas, acid and alkali substance and other impurity, can change the glass cloth covering outside sound-absorbing material into resistance to marquis plastic sheeting.
Described water conservancy diversion sound absorption inserted sheet is made up of sound-absorbing material, two outer cover glass cloth or the plastic sheeting of resistance to marquis, and metal mask perforated plate is established on surface, is vertically set on and supports between vertical groove, support translot, top umbrella crown, the rainproof acoustic board of tubular.The rainproof acoustic board of described tubular bottom arranges safe edge frame.Outside can preventing that sound-absorbing material is exposed to, improve service life.Water conservancy diversion sound absorption inserted sheet, support vertical groove and support that translot is corresponding to be arranged, multiple water conservancy diversion sound absorption inserted sheets can be set in each rainproof noise elimination blast cap, the spacing between water conservancy diversion sound absorption inserted sheet is less, and soundproof effect better.Meanwhile, support vertical groove and support translot quantity the more, the structural stability of hoisting process better, is born the ability of wind load better.
According to air outlet blast, air quantity and criteria of noise control, determine the ratio of effective air-out area between tubular rainproof acoustic board bottom and chimney.
Noise via chimney air outlet → by acoustic absorbing guide cone body absorb and lead between the rainproof acoustic board of (resistance and resistance noise reduction) → tubular and water conservancy diversion sound absorption inserted sheet, absorb and the reflection rainproof acoustic board of (resistance noise reduction) → tubular and chimney between air outlet distribute, form impedance type noise elimination structure.Noise does not have put-through channel, and the high frequency of having stopped noise lost efficacy, and improves low-frequency noise noise elimination ratio, effectively improves sound deadening capacity, has full range noise elimination function.Effective area between the rainproof acoustic board of tubular and chimney is greater than the effective area of chimney air outlet, can reduce to greatest extent air-flow velocity, reduces stream pressure loss.
The beneficial effects of the utility model are: 1, can prevent the invasion and attack of karaburan, sleet water, and have the function of eliminating chimney air outlet radiated noise; 2, have full range noise elimination function, stream pressure loss is little; 3, simple in structure, volume is little, lightweight, cost is low; 4, without taking blower fan machine room space, convenient for installation and maintenance.
Brief description of the drawings
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is front view of the present utility model.
Fig. 2 is that the A of the utility model embodiment is to view.
1. umbrella crowns in figure, 2. acoustic absorbing guide cone body, 3. rainproof acoustic board, 4. water conservancy diversion sound absorption inserted sheet, 5. chimney air outlet, 6. the cone end, 7. cone point, 8. sound-absorbing material, 9. glass cloth, 10. mask perforated plate, 11. support vertical groove, 12. support translot, 13. upper flanges, 14. lower flanges, 15. bolts, 16. safe edge frames.
Detailed description of the invention
In the embodiment shown in Fig. 1,2, a kind of rainproof noise elimination blast cap, is made up of top umbrella crown (1), acoustic absorbing guide cone body (2), the rainproof acoustic board of tubular (3), installation load-carrying construction, water conservancy diversion sound absorption inserted sheet (4).Described top umbrella crown (1) is arranged on chimney air outlet (5) top; At the bottom of the cone of described acoustic absorbing guide cone body (2), (6) are arranged in top umbrella crown (1), and cone point (7) faces the airflow direction of chimney air outlet (5); The rainproof acoustic board of described tubular (3) vertically arranges, and top is connected with top umbrella crown (1) edge, and bottom is lower than chimney air outlet (5).
Filling sucting sound material (8) in described acoustic absorbing guide cone body (2) structure, outer cover glass cloth (9) or the plastic sheeting of resistance to marquis, metal mask perforated plate (10) is established on surface.The rainproof acoustic board of described tubular (3) inwall arranges the outer cover glass cloth of sound-absorbing material (8) (9) or the plastic sheeting of resistance to marquis, and metal mask perforated plate (10) is established on surface.
Described installation load-carrying construction is by supporting vertical groove (11), support translot (12), upper flange (13), lower flange (14) formation, support vertical groove (11) and vertically connect top umbrella crown (1), upper flange (13), support the rainproof acoustic board of translot (12) level connection joint tubular (3), support vertical groove (11), lower flange (14) is welded on chimney wall, and upper flange (13), lower flange (14) connect by bolt (15).
Described water conservancy diversion sound absorption inserted sheet (4) is made up of sound-absorbing material (8), two outer cover glass cloth (9) or the plastic sheeting of resistance to marquis, metal mask perforated plate (10) is established on surface, is vertically set on and supports vertical groove (11), supports between translot (12), top umbrella crown (1), the rainproof acoustic board of tubular (3).The rainproof acoustic board of described tubular (3) bottom arranges safe edge frame (16).
Above-described embodiment is only used for further illustrating the rainproof noise elimination blast cap of one of the present utility model; but the utility model is not limited to embodiment; any simple modification, equivalent variations and modification that every foundation technical spirit of the present utility model is done above embodiment, all fall in the protection domain of technical solutions of the utility model.
Claims (6)
1. a rainproof noise elimination blast cap, is made up of top umbrella crown, acoustic absorbing guide cone body, the rainproof acoustic board of tubular, installation load-carrying construction, water conservancy diversion sound absorption inserted sheet, it is characterized in that: described top umbrella crown is arranged on chimney air outlet top; At the bottom of the cone of described acoustic absorbing guide cone body, be arranged in the umbrella crown of top, cone point faces the airflow direction of chimney air outlet; The rainproof acoustic board of described tubular vertically arranges, and top is connected with top umbrella crown edge, and bottom is lower than chimney air outlet.
2. rainproof noise elimination blast cap according to claim 1, is characterized in that: filling sucting sound material in described acoustic absorbing guide cone body structure, and outer cover glass cloth or the plastic sheeting of resistance to marquis, metal mask perforated plate is established on surface.
3. rainproof noise elimination blast cap according to claim 1, is characterized in that: the rainproof acoustic board inwall of described tubular arranges the outer cover glass cloth of sound-absorbing material or the plastic sheeting of resistance to marquis, and metal mask perforated plate is established on surface.
4. rainproof noise elimination blast cap according to claim 1, it is characterized in that: described installation load-carrying construction by supporting vertical groove, support translot, upper flange, lower flange and form, support vertical groove and vertically connect top umbrella crown, upper flange, support the rainproof acoustic board of translot level connection joint tubular, support vertical groove, lower flange is welded on chimney wall, and upper flange, lower flange are bolted.
5. rainproof noise elimination blast cap according to claim 1, it is characterized in that: described water conservancy diversion sound absorption inserted sheet is made up of sound-absorbing material, two outer cover glass cloth or the plastic sheeting of resistance to marquis, metal mask perforated plate is established on surface, is vertically set on and supports vertical groove, supports between translot, top umbrella crown, the rainproof acoustic board of tubular.
6. rainproof noise elimination blast cap according to claim 1, is characterized in that: the rainproof acoustic board of described tubular bottom arranges safe edge frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420246642.5U CN203810431U (en) | 2014-05-15 | 2014-05-15 | Rainproof muffle cowl |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420246642.5U CN203810431U (en) | 2014-05-15 | 2014-05-15 | Rainproof muffle cowl |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203810431U true CN203810431U (en) | 2014-09-03 |
Family
ID=51449174
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420246642.5U Expired - Fee Related CN203810431U (en) | 2014-05-15 | 2014-05-15 | Rainproof muffle cowl |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203810431U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105091006A (en) * | 2014-05-15 | 2015-11-25 | 厦门嘉达声学技术有限公司 | Rain-proof noise eliminating funnel cap |
| CN107202501A (en) * | 2016-03-18 | 2017-09-26 | 厦门嘉达环保建造工程有限公司 | Centralized cooling tower ventilation noise reduction system |
-
2014
- 2014-05-15 CN CN201420246642.5U patent/CN203810431U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105091006A (en) * | 2014-05-15 | 2015-11-25 | 厦门嘉达声学技术有限公司 | Rain-proof noise eliminating funnel cap |
| CN107202501A (en) * | 2016-03-18 | 2017-09-26 | 厦门嘉达环保建造工程有限公司 | Centralized cooling tower ventilation noise reduction system |
| CN107202501B (en) * | 2016-03-18 | 2023-04-14 | 厦门嘉达环保科技有限公司 | Centralized cooling tower ventilation noise reduction system |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140903 Termination date: 20180515 |