CN210218244U - Impedance composite silencer - Google Patents
Impedance composite silencer Download PDFInfo
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- CN210218244U CN210218244U CN201921151382.2U CN201921151382U CN210218244U CN 210218244 U CN210218244 U CN 210218244U CN 201921151382 U CN201921151382 U CN 201921151382U CN 210218244 U CN210218244 U CN 210218244U
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- filling layer
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Abstract
The utility model discloses an impedance composite muffler, which comprises a shell, a rubber damping sound-proof felt, polyester ammonia sound-absorbing wave cotton, glass fiber sound-absorbing cotton, polyester fiber sound-absorbing cotton, a fireproof non-woven galvanized steel micro-perforated sound-absorbing board, mounting screws, a bent common plate flange interface, triangular micro-perforated sound-absorbing board wedges, a wooden porous sound-absorbing keel, a polyester fiber cotton filling layer, glass fiber cotton and sound-absorbing cloth filling layer and a sound-proof felt filling layer, compared with the prior art, the utility model adopts a micro-perforated steel plate to manufacture a sound-absorbing sheet, a muffler body and the sound-absorbing sheet are filled with fireproof non-woven fabric to isolate secondary dust, the polyester fiber sound-absorbing cotton is filled, the glass fiber sound-absorbing cotton, polyurethane sound-absorbing sponge and the rubber damping sound-proof felt are tested, the noise is effectively reduced by more than 40 decibels, and the good heat-insulating effect can, has the value of popularization and application.
Description
Technical Field
The utility model relates to the field of mechanical equipment, especially, relate to a compound silencer of impedance.
Background
The centrifugal fan or cabinet type fan etc. send the noise and have influenced ambient noise, and among the prior art, the noise abatement adopts the noise elimination section of thick bamboo structure mostly, though there is certain noise elimination effect, but can also have the promotion space, does not possess the heat preservation effect yet, and the loss energy consumption, consequently, there is the improvement space.
SUMMERY OF THE UTILITY MODEL
An object of the present invention is to provide a composite impedance muffler for solving the above problems.
The utility model discloses a following technical scheme realizes above-mentioned purpose:
the utility model comprises a shell, a rubber damping sound-proof felt, polyester ammonia sound-absorbing wave cotton, glass fiber sound-absorbing cotton, polyester fiber sound-absorbing cotton, a fireproof non-woven fabric galvanized steel micro-perforated sound-absorbing board, mounting screws, a bent common plate flange interface, a triangular micro-perforated sound-absorbing board wedge, a wooden porous sound-absorbing keel, a polyester fiber cotton filling layer, a glass fiber cotton and sound-absorbing cloth filling layer and a sound-absorbing felt filling layer, wherein the inner layer of the shell is sequentially provided with the rubber damping sound-absorbing felt, the polyester ammonia sound-absorbing wave cotton, the glass fiber sound-absorbing cotton, the polyester fiber sound-absorbing cotton, the fireproof non-woven fabric galvanized steel micro-perforated sound-absorbing board, the bent common plate flange interface is respectively arranged at the inlet and the outlet of the shell, the mounting screws are arranged on the bent common plate flange interface, the two triangular micro-perforated sound-absorbing board wedges are respectively arranged at one end of the wooden porous sound-absorbing keel to, the abatvoix is three groups, three groups the abatvoix set up respectively in non-woven fabrics micro-perforation abatvoix middle part in the shell, three groups in the abatvoix wooden porous inhale and fill respectively in the sound fossil fragments polyester fiber cotton filling layer glass fiber cotton adds inhales the sound cloth filling layer with the deadening felt filling layer.
Preferably, two of the three groups of sound-absorbing boards are arranged in an inclined mode, the middle group of sound-absorbing board is horizontally arranged from an inlet to an outlet, the other two groups of sound-absorbing boards are positioned on two sides of the middle group of sound-absorbing board, and the sound-absorbing boards on the two sides are inclined towards the two sides from the inlet to the outlet.
Preferably, the housing is a galvanized steel housing made of a galvanized steel material.
The beneficial effects of the utility model reside in that:
the utility model relates to a compound silencer of impedance, compared with the prior art, the utility model discloses a microperforated steel sheet is made and is inhaled the sound piece, and the silencer fuselage with inhale the sound piece and fill fire prevention non-woven fabrics and keep apart secondary dust, fill polyester fiber and inhale the sound cotton, glass fiber inhales the sound cotton, polyurethane inhales the sound sponge, rubber damping deadening felt, through the test, effective noise reduction is more than 40 decibels, owing to filled above-mentioned material, can reach good heat preservation effect, has the value of popularization and application.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: the sound absorption structure comprises a shell, 2-rubber damping sound insulation felt, 3-polyurethane sound absorption wave cotton, 4-glass fiber sound absorption cotton, 5-polyester fiber sound absorption cotton, 6-fireproof non-woven fabric galvanized steel micro-perforated sound absorption boards, 7-mounting screws, 8-bending type common board flange interfaces, 9-triangular micro-perforated sound absorption board wedges, 10-wood porous sound absorption keels, 11-polyester fiber cotton filling layers, 12-glass fiber cotton and sound absorption cloth filling layers and 13-sound insulation felt filling layers.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings:
as shown in fig. 1: the utility model comprises a shell 1, a rubber damping sound-proof felt 2, a polyester ammonia sound-absorbing wave cotton 3, a glass fiber sound-absorbing cotton 4, a polyester fiber sound-absorbing cotton 5, a non-woven fabric micro-perforated sound-absorbing board 6, a mounting screw 7, a bending type co-plate flange interface 8, a triangular micro-perforated sound-absorbing board wedge 9, a wood porous sound-absorbing keel 10, a polyester fiber cotton filling layer 11, a glass fiber cotton and sound-absorbing cloth filling layer 12 and a sound-absorbing felt filling layer 13, wherein the inner layer of the shell is sequentially provided with the rubber damping sound-absorbing felt, the polyester ammonia sound-absorbing wave cotton, the glass fiber sound-absorbing cotton, the polyester fiber sound-absorbing cotton and the non-woven fabric galvanized steel micro-perforated sound-absorbing board, the bending type co-plate flange interface is respectively arranged at the inlet and the outlet of the shell, the mounting screw is arranged on the bending type co-plate flange interface, and two triangular micro-perforated sound-absorbing board wedges are respectively arranged, the abatvoix is three groups, three groups the abatvoix set up respectively in non-woven fabrics micro-perforation abatvoix middle part, three groups in the abatvoix wooden porous in inhaling the sound keel and filling respectively polyester fiber cotton filling layer glass fiber cotton adds inhales the sound cloth filling layer with the deadening felt filling layer.
Preferably, two of the three groups of sound-absorbing boards are arranged in an inclined mode, the middle group of sound-absorbing board is horizontally arranged from an inlet to an outlet, the other two groups of sound-absorbing boards are positioned on two sides of the middle group of sound-absorbing board, and the sound-absorbing boards on the two sides are inclined towards the two sides from the inlet to the outlet.
Preferably, the housing is a galvanized steel housing made of a galvanized steel material.
The working principle is as follows: when wind is mixed with noise and enters the silencer, when the noise touches the multi-channel sound-absorbing wall, firstly, a part of noise can be reflected firstly because of the problem of irregular angles, the sound wave is the principle of wave diffusion, the channel is arranged in the direction from small to big, the noise transmission can be fully blocked, the absorbed noise enters the non-woven fabric micro-perforated sound-absorbing board for sound attenuation, the principle of noise elimination of the non-woven fabric micro-perforated sound-absorbing board is that when the noise passes through the micro-perforated board with acoustic characteristics, the surface of the micro-perforated board causes irregular shape to the noise transmission, the frequency and the shape of the sound wave can change, secondary reflection and cancellation are caused, then the passed medium-high frequency noise is fully absorbed by three sound-absorbing boards, namely a polyester fiber cotton filling layer, a glass fiber cotton and sound-absorbing cloth filling layer and a sound-insulating felt filling layer, and, because of its heavier absorbing characteristic, can make the low frequency noise be difficult for piercing through, can take place partial reflection behind the low frequency noise collision, offset to at incasement diffusion, reduce the propagation of low frequency noise, the theory of operation of heat preservation effect, owing to sound absorbing material and sound insulation material all have heat preservation, the heat-proof quality, so can reach the heat preservation effect.
The basic principles and main features of the present invention and the advantages of the present invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (3)
1. An impedance composite muffler is characterized in that: comprises a shell, a rubber damping sound-proof felt, polyester ammonia sound-absorbing wave cotton, glass fiber sound-absorbing cotton, polyester fiber sound-absorbing cotton, fireproof non-woven fabric, a galvanized steel micro-perforated sound-absorbing board, mounting screws, a bending type co-plate flange interface, a triangular micro-perforated sound-absorbing board wedge, a wooden porous sound-absorbing keel, a polyester fiber cotton filling layer, a glass fiber cotton sound-absorbing cloth filling layer and a sound-proof felt filling layer, wherein the inner layer of the shell is sequentially provided with the rubber damping sound-absorbing felt, the polyester ammonia sound-absorbing galvanized wave cotton, the glass fiber sound-absorbing cotton, the polyester fiber sound-absorbing cotton, the fireproof non-woven fabric, the bending type steel micro-perforated sound-absorbing board, the bending type co-plate flange interface is respectively arranged at the inlet and the outlet of the shell, the mounting screws are arranged on the bending type co-plate flange interface, and the two triangular micro-perforated sound-absorbing board wedges are respectively arranged at two ends, the abatvoix is three groups, three groups the abatvoix set up respectively in non-woven fabrics micro-perforation abatvoix middle part in the shell, three groups in the abatvoix wooden porous inhale and fill respectively in the sound fossil fragments polyester fiber cotton filling layer glass fiber cotton adds inhales the sound cloth filling layer with the deadening felt filling layer.
2. The resistive compound muffler of claim 1, wherein: and the three groups of sound-absorbing boards are obliquely arranged, the middle group of sound-absorbing board is horizontally arranged from an inlet to an outlet, the other two groups of sound-absorbing boards are positioned on two sides of the middle group of sound-absorbing board, and the sound-absorbing boards on two sides are inclined towards two sides from the inlet to the outlet.
3. The resistive compound muffler of claim 1, wherein: the shell is a galvanized steel shell made of galvanized steel materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921151382.2U CN210218244U (en) | 2019-07-22 | 2019-07-22 | Impedance composite silencer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921151382.2U CN210218244U (en) | 2019-07-22 | 2019-07-22 | Impedance composite silencer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210218244U true CN210218244U (en) | 2020-03-31 |
Family
ID=69917435
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921151382.2U Active CN210218244U (en) | 2019-07-22 | 2019-07-22 | Impedance composite silencer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210218244U (en) |
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2019
- 2019-07-22 CN CN201921151382.2U patent/CN210218244U/en active Active
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