CN203812558U - Micropore composite disc type silencer - Google Patents
Micropore composite disc type silencer Download PDFInfo
- Publication number
- CN203812558U CN203812558U CN201420218701.8U CN201420218701U CN203812558U CN 203812558 U CN203812558 U CN 203812558U CN 201420218701 U CN201420218701 U CN 201420218701U CN 203812558 U CN203812558 U CN 203812558U
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- China
- Prior art keywords
- housing
- micropore
- sound absorber
- annular
- steel plate
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Abstract
The utility model discloses a micropore composite disc type silencer, comprising a flange plate and a housing whose two ends are communicated. The flange plate is installed on a first end of the housing. The first end opening diameter is smaller than the second end opening diameter. The housing is provided with a tubular filtering device and a micropore sound absorption device inside. The tubular filtering device comprises an outer steel cylinder which is provided with a plurality of holes on the wall, and inner steel tubes. The plurality of inner steel tubes are uniformly distributed in the outer steel cylinder. Gaps among adjacent inner steel tubes are filled with a sound absorption material. The micropore sound absorption device comprises an annular steel plate which is uniformly provided with a plurality of holes and an annular cavity which is not provided with a hole. An opening end of a side of the annular cavity is connected with the annular steel plate. The annular cavity is filled with the sound absorption material. Through using the housing which has a small inlet and a large outlet, and installing the tubular filtering device and the micropore sound absorption device in the housing, effects of eliminating low-frequency, medium-frequency, and high-frequency noise are achieved. The silencer is low in resistance coefficient, and does not influence airflow to pass through smoothly.
Description
Technical field
The utility model relates to a kind of sound suppressor, relates in particular to the compound disk-type silencer of a kind of micropore.
Background technology
Sound suppressor for generating electricity, the noise reduction of the equipment such as the various model blower fans of industrial factories and miness, gas outlet such as chemical industry, metallurgy, weaving, can effectively reduce the noise of various noise equipment.
The kind of sound suppressor is a lot, generally can be divided into six kinds of main types: dissipative muffler, reactive muffler, impedance muffler, micropunch plate muffler, micropole diffusor and active silencer.The sound suppressor that is applicable to the equipment such as blower fan, gas outlet adopts disc type reactive muffler more, there is absorption frequency single (being that frequency spectrum religion is narrow), the problem that the frequency range that abates the noise is narrower, exist resistance coefficient high (generally more than 50% simultaneously, the low problem of percent of pass of air-flow, affects the normal exhaust function of noise equipment.The sound suppressor that adopts traditional any single type, is all difficult to head it off.
Summary of the invention
The purpose of this utility model provides a kind of compound disk-type silencer of micropore that can eliminate multi-frequency noise with regard to being in order to address the above problem.
The utility model is achieved through the following technical solutions above-mentioned purpose:
The compound disk-type silencer of a kind of micropore, comprise the housing that ring flange and two ends communicate, described ring flange is installed on the first end of described housing, the first end opening diameter of described housing is less than the second end opening diameter, described housing is provided with conical section and cylindrical section by first end successively to the second end, tubular type filter and micropore sound absorber are installed in the cylindrical section of described housing, described tubular type filter comprises outer steel cylinder and interior steel pipe, a plurality of described interior steel pipes are uniformly distributed in described outer steel cylinder, in space between adjacent described interior steel pipe, be filled with acoustic absorbant, on described outer steel cylinder and described interior steel pipe, be equipped with a plurality of apertures, the axial direction of described outer steel cylinder and described interior steel pipe is identical and identical with the through hole axial direction of described housing, described micropore sound absorber comprises the annular steel plate that is evenly provided with a plurality of through holes and the annular cavity of not establishing through hole, and a side opening end of described annular cavity is connected with described annular steel plate, in described annular cavity, is filled with acoustic absorbant, described micropore sound absorber is two and lays respectively at outside the excircle of described tubular type filter, described in first, the annulus through-hole wall of micropore sound absorber is set in described tubular type filter near one end of described housing first end, the annulus through-hole wall of second described micropore sound absorber is set in the other end of described tubular type filter, described in first, the annular steel plate of micropore sound absorber is positioned at the one end near described housing first end, and the annular steel plate of second described micropore sound absorber is positioned at the one end near described second end of the housing.
In said structure, the first end of housing is as inlet end, the second end is as outlet side, because the second end opening diameter of housing is greater than first end opening diameter, so air-flow has the effect of diffusion in housing in the process of circulation, can reduce gas shock power so on the whole, reduce air vibration, air-flow is also less by resistance; In tubular type filter, whole outer steel cylinder is equivalent to an acoustic filter, each interior steel pipe that is provided with a plurality of apertures is equivalent to the mesh of the different frequency of this acoustic filter, when including the sound wave of various frequency contents and enter interior firm pipe, only have the sound wave identical with mesh natural frequency to pass through, the sound wave of other frequency can not pass through mesh. can only in interior steel pipe, carry out back reflective, choose suitable interior steel pipe combination. just can filter the noise of some frequency content, thereby reach the object of noise elimination, in being applicable to eliminate, low-frequency noise; The percentage of perforation of the aperture on the annular steel plate of micropore sound absorber is corresponding with the thickness of annular steel plate and the component frequency of voice signal, so can eliminate the noise of corresponding frequencies.In tubular type filter and micropore sound absorber, be all filled with acoustic absorbant, acoustic energy rubs and is converted into heat energy and is consumed in the hole of the acoustic absorbant of porous, and its sound wave by sound suppressor is weakened, and reaches the object of noise elimination, is applicable to eliminate high frequency noise.Acoustic absorbant can be selected polyfoam, urea-formaldehyde foamed plastics, industrial felt, foamglass, glass wool, mineral cotton or asphalt slag wool etc. as required.
Preferably, described in first, the interior ring edge of the annular steel plate of micropore sound absorber tilts to the direction near described second end of the housing, and the interior ring edge of the annular steel plate of second described micropore sound absorber tilts to the direction near described housing first end.The shape of through holes of this structure and housing is corresponding, realizes best soundproof effect.
Preferably, the thickness of the annular steel plate of described micropore sound absorber is 3mm, and the through-hole aperture on described annular steel plate is 1mm, and the percentage of perforation on described annular steel plate is 3%; The thickness of described outer steel cylinder is 3mm, and the internal diameter of described interior steel pipe is 10mm, 50% of the sectional area that the sectional area sum of all described interior steel pipes is described outer steel cylinder.Through test, above-mentioned concrete structure parameter can realize relatively best soundproof effect.
The beneficial effects of the utility model are:
The utility model goes out large housing by adopting into little, and a tubular type filter and two micropore sound absorbers are installed in housing, realization is to the basic, normal, high frequency noise eradicating efficacy in noise, frequency of noise elimination scope is wide, resistance coefficient is less, do not affect air-flow and pass through smoothly, can be widely used in the noise reduction of the equipment such as various model blower fans, gas outlet in the industrial factories and miness such as generating, chemical industry, metallurgy, weaving.
Accompanying drawing explanation
Fig. 1 is the front view of the compound disk-type silencer of micropore described in the utility model;
Fig. 2 is that the master of the compound disk-type silencer of micropore described in the utility model looks cut-open view;
Fig. 3 is the left view of ring flange described in the utility model;
Fig. 4 is that the master of housing described in the utility model looks cut-open view;
Fig. 5 is the left view of housing described in the utility model;
Fig. 6 is that the master of micropore sound absorber described in the utility model looks cut-open view;
Fig. 7 is the right view of micropore sound absorber described in the utility model;
Fig. 8 is that the master of tubular type filter described in the utility model looks cut-open view;
Fig. 9 is the side view of tubular type filter described in the utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
As shown in Figures 1 to 5, the compound disk-type silencer of micropore described in the utility model comprises the housing 2 that ring flange 1 and two ends communicate, ring flange 1 is installed on the first end 21 of housing 2, the annulus of ring flange 1 is provided with mounting hole 11, the aperture of the center pit 12 of ring flange 1 is consistent with the opening diameter of the first end 21 of housing 2, the opening diameter of the first end 21 of housing 2 is less than the opening diameter of the second end 23, housing 2 is provided with conical section 22 and cylindrical section 24 successively by first end 21 to second ends 23, 4 tubular type filters and two 3 micropore sound absorbers are installed in the cylindrical section of housing 2.
As shown in Fig. 2, Fig. 4, Fig. 6 and Fig. 7, micropore sound absorber 3 comprises the annular steel plate 33 that is evenly provided with a plurality of through holes 36 and the annular cavity 35 of not establishing through hole, annular cavity 35 can adopt the metals such as steel, aluminium, one side opening end of annular cavity 35 is connected with annular steel plate 33, is filled with acoustic absorbant 31 in annular cavity 35.Micropore sound absorber 3 is two and lays respectively at outside the excircle of tubular type filter 4, the hole wall of the annulus through hole 32 of first micropore sound absorber (the micropore sound absorber 3 on the left side in Fig. 2) is set in tubular type filter 4 near one end (left end in Fig. 2) of the first end 21 of housing 2, the hole wall of the annulus through hole 32 micropore sound absorber 3 on the right in second micropore sound absorber 3(Fig. 2) is set in the other end (right-hand member in Fig. 2) of tubular type filter 4, the annular steel plate 33 of first micropore sound absorber 3 is positioned at the one end near the first end 21 of housing 2, the annular steel plate 33 of second micropore sound absorber 3 is positioned at the one end near the second end 23 of housing 2, the interior ring edge of the annular steel plate 33 of first micropore sound absorber 3 tilts to the direction of the second end 23 near housing, the interior ring edge of the annular steel plate 33 of second micropore sound absorber 3 tilts to the direction of the first end 21 near housing 2, the outer shroud edge of the annular steel plate 33 of micropore sound absorber 3 forms larger opening 34, the thickness of annular steel plate 33 is 3mm, and the aperture of the through hole 36 on annular steel plate 33 is 1mm, and the percentage of perforation on annular steel plate 33 is 3%.
As shown in Fig. 2, Fig. 8 and Fig. 9, tubular type filter 4 comprises outer steel cylinder 44 and interior steel pipe 41, a plurality of interior steel pipes 41 are uniformly distributed in outer steel cylinder 44, in space between adjacent interior steel pipe 41, be filled with acoustic absorbant 43, on outer steel cylinder 44 and interior steel pipe 41, be equipped with a plurality of apertures 42, the axial direction of outer steel cylinder 44 and interior steel pipe 41 is identical and identical with the through hole axial direction of housing 2; The thickness of outer steel cylinder 44 is 3mm, and the internal diameter of interior steel pipe 41 is 10mm, the sectional area sum of all interior steel pipes 41 be outer steel cylinder 44 sectional area 50%.Illustrate: acoustic absorbant 43 is identical with acoustic absorbant 31, but is positioned at different device, so adopted not isolabeling.
As shown in Fig. 1-Fig. 9, during application, the compound disk-type silencer of this micropore is installed on to Nei Huo air channel, the air channel end of noise equipment by ring flange 1, the first end 21 of housing 2 is as inlet end, the second end 23 of housing 2 is as outlet side, and air-flow is discharged from outlet side smoothly after 4 tubular type filters and two 3 micropore sound absorber sound absorptions; Its sound absorption principle is: the noise of component frequency enters through the through hole 36 on annular steel plate 33 that annular cavity 35 is interior to be absorbed by acoustic absorbant 31, the noise of component frequency is through a plurality of interior steel pipes 41 in addition, wherein the noise of asynchronous frequency can not pass through smoothly, through the aperture 42 on interior steel pipe 41, enters in acoustic absorbant 43 and is absorbed; After above-mentioned repeatedly sound absorption, most noises of air-flow, by filtering, are realized the object of noise reduction.
Above-described embodiment is preferred embodiment of the present utility model; it is not the restriction to technical solutions of the utility model; so long as the technical scheme that can realize on the basis of above-described embodiment without creative work all should be considered as falling within the scope of the rights protection of the utility model patent.
Claims (4)
1. the compound disk-type silencer of micropore, comprise the housing that ring flange and two ends communicate, described ring flange is installed on the first end of described housing, it is characterized in that: the first end opening diameter of described housing is less than the second end opening diameter, described housing is provided with conical section and cylindrical section by first end successively to the second end, tubular type filter and micropore sound absorber are installed in the cylindrical section of described housing, described tubular type filter comprises outer steel cylinder and interior steel pipe, a plurality of described interior steel pipes are uniformly distributed in described outer steel cylinder, in space between adjacent described interior steel pipe, be filled with acoustic absorbant, on described outer steel cylinder and described interior steel pipe, be equipped with a plurality of apertures, the axial direction of described outer steel cylinder and described interior steel pipe is identical and identical with the through hole axial direction of described housing, described micropore sound absorber comprises the annular steel plate that is evenly provided with a plurality of through holes and the annular cavity of not establishing through hole, and a side opening end of described annular cavity is connected with described annular steel plate, in described annular cavity, is filled with acoustic absorbant, described micropore sound absorber is two and lays respectively at outside the excircle of described tubular type filter, described in first, the annulus through-hole wall of micropore sound absorber is set in described tubular type filter near one end of described housing first end, the annulus through-hole wall of second described micropore sound absorber is set in the other end of described tubular type filter, described in first, the annular steel plate of micropore sound absorber is positioned at the one end near described housing first end, and the annular steel plate of second described micropore sound absorber is positioned at the one end near described second end of the housing.
2. the compound disk-type silencer of micropore according to claim 1, it is characterized in that: described in first, the interior ring edge of the annular steel plate of micropore sound absorber tilts to the direction near described second end of the housing, the interior ring edge of the annular steel plate of second described micropore sound absorber tilts to the direction near described housing first end.
3. the compound disk-type silencer of micropore according to claim 1 and 2, is characterized in that: the thickness of the annular steel plate of described micropore sound absorber is 3mm, and the through-hole aperture on described annular steel plate is 1mm, and the percentage of perforation on described annular steel plate is 3%.
4. the compound disk-type silencer of micropore according to claim 1 and 2, is characterized in that: the thickness of described outer steel cylinder is 3mm, and the internal diameter of described interior steel pipe is 10mm, 50% of the sectional area that the sectional area sum of all described interior steel pipes is described outer steel cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420218701.8U CN203812558U (en) | 2014-04-30 | 2014-04-30 | Micropore composite disc type silencer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420218701.8U CN203812558U (en) | 2014-04-30 | 2014-04-30 | Micropore composite disc type silencer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203812558U true CN203812558U (en) | 2014-09-03 |
Family
ID=51451280
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420218701.8U Expired - Fee Related CN203812558U (en) | 2014-04-30 | 2014-04-30 | Micropore composite disc type silencer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203812558U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105139845A (en) * | 2015-07-20 | 2015-12-09 | 合肥科启环保科技有限公司 | Noise adsorption device with damping function |
| CN105139842A (en) * | 2015-07-28 | 2015-12-09 | 合肥科启环保科技有限公司 | Noise absorber |
| CN108035791A (en) * | 2017-11-27 | 2018-05-15 | 三汽车制造有限公司 | A kind of wind scooper, engine and power-equipment |
-
2014
- 2014-04-30 CN CN201420218701.8U patent/CN203812558U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105139845A (en) * | 2015-07-20 | 2015-12-09 | 合肥科启环保科技有限公司 | Noise adsorption device with damping function |
| CN105139842A (en) * | 2015-07-28 | 2015-12-09 | 合肥科启环保科技有限公司 | Noise absorber |
| CN108035791A (en) * | 2017-11-27 | 2018-05-15 | 三汽车制造有限公司 | A kind of wind scooper, engine and power-equipment |
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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: 20140903 Termination date: 20160430 |