CN104775872A - Novel impedance type silencer - Google Patents
Novel impedance type silencer Download PDFInfo
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- CN104775872A CN104775872A CN201510205786.5A CN201510205786A CN104775872A CN 104775872 A CN104775872 A CN 104775872A CN 201510205786 A CN201510205786 A CN 201510205786A CN 104775872 A CN104775872 A CN 104775872A
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- inserting tube
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- anechoic chamber
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Abstract
The invention relates to the field of mechanical equipment, in particular to a novel impedance type silencer capable of perfectly and respectively adsorbing and reducing noise according to high frequency and low frequency in the noise. The novel impedance type silencer comprises an expansion silencing chamber, wherein one end of the expansion silencing chamber is provided with an air inlet pipe, the other end of the expansion silencing chamber is provided with an air outlet pipe, a separation plate is arranged on a surface, vertical to the center line of the air inlet pipe, in the expansion silencing chamber, an insertion pipe is arranged on the separation plate, a vibration reducing hole and a flow reducing hole are formed in the insertion pipe, a sound absorption layer is also arranged on the insertion pipe, the insertion pipe has the same center line as the air inlet pipe and the expansion silencing chamber, four groups of separation plates are arranged in the expansion silencing chamber, each group of separation plates include four separation plates, the insertion pipes are respectively arranged on the four separation plates, the four separation plates uniformly divide the expansion silencing chamber into four identical fan-shaped chambers by using the center line of the expansion silencing chamber as the center, and a reinforcing ring is arranged between the separation plates and the inner wall of the expansion silencing chamber. The novel impedance type silencer has the advantages that the structure is simple, the application is wide, and the noise can be respectively absorbed and reduced according to high frequency and low frequency of the noise.
Description
Technical field
The present invention relates to a kind of machinery, particularly novel impedance type baffler.
Background technique
Along with advancing by leaps and bounds of farm machinery development, the large-scale promotion of producing along with mechanized agriculture, environmental pollution is also following, and noise pollution is exactly one of them.Farm machinery can send very large noise in the process of operation, general, except the noise that chain transmission and motor or motor produce, the toxic emission of motor also can produce very large noise, and large more than the noise of chain transmission and motor generation, become the main source of noise in farm mechanization production.Often weather is drier season in harvesting, and the layout of silencing apparatus is generally in machine chassis bottom, easily makes dry thing catch fire initiation fire, such as harvesting machinery.Therefore, the noise how reducing toxic emission generation suffers from fire a great problem becoming agriculture equipment.The waste gas that traditional diesel engine is discharged in its working procedure all can produce very noisy, most diesel engine is all provided with baffler, and silencing apparatus is a kind of device stoping sound transmission and allow air-flow to pass through, eliminate the important measures of air power noise, the device of the reduction noise on the air-flow path that silencing apparatus is mounted in air powered equipment (equipment as larger in relief opening noises such as blower, air compressor, boiler exhaust mouth, generator, water pumps) or in inlet and exhaust system; The effect of baffler is the very noisy absorbing waste gas generation, to eliminate, to reduce the impact of Noise upon Environment, the kind of the baffler on market is a lot, but these bafflers are only in shape and install and there is difference, and the not change of the structure of baffler itself and working principle.Existing baffler all well can not absorb noise reduction according to the high and low frequency in noise respectively.
Summary of the invention
Goal of the invention of the present invention is: for prior art Problems existing, provides novel impedance type baffler.
To achieve these goals, the technical solution used in the present invention is: novel impedance type baffler, comprise expansion anechoic chamber, described expansion anechoic chamber is cylindrical shape, one end of described expansion anechoic chamber is provided with suction tude, its the other end is provided with steam outlet pipe, dividing plate is provided with in described expansion anechoic chamber with on the face of the central axis of described suction tude, dividing plate is provided with Inserting Tube, described Inserting Tube is cylindrical shape, described Inserting Tube is provided with shock absorbing hole and subtracts discharge orifice, described Inserting Tube is also provided with sound-absorption layer, described Inserting Tube is identical with the center line expanding anechoic chamber with suction tude, four groups of dividing plates are provided with in described expansion anechoic chamber, described dividing plate of often organizing has four pieces, four pieces of dividing plates are equipped with Inserting Tube, expansion anechoic chamber is divided into four identical sector shaped chambers by four pieces of dividing plates centered by the center line expanding anechoic chamber, stiffening ring is provided with between described dividing plate and expansion anechoic chamber inwall.
As preferred version of the present invention, the described central axis direction of four groups of dividing plates successively from suction tude 1 to steam outlet pipe is arranged in parallel, on the Inserting Tube of shock absorbing hole between first group and second group of dividing plate, outer wall near the Inserting Tube between second group of dividing plate and the 3rd group of dividing plate is provided with sound-absorption layer, the Inserting Tube of second group of dividing plate and the 3rd group of dividing plate centre is provided with opening, and the outer wall of the Inserting Tube between the 3rd group of dividing plate and the 4th group of dividing plate is provided with sound-absorption layer.
As preferred version of the present invention, described first group and second group of dividing plate and Inserting Tube and expand between anechoic chamber's inwall and form shock absorbing room.Shock absorbing room can reduce the resonance efficiency of noise, absorbs the volume of the HFS in noise decrease.
As preferred version of the present invention, described second group and the 3rd group of dividing plate and Inserting Tube and expand to be formed to subtract between anechoic chamber's inwall and flow room.Subtract stream room and can reduce the resonance efficiency of noise, absorb in noise decrease, the volume of low frequency part.
As preferred version of the present invention, described shock absorbing hole and subtract discharge orifice and be provided with several, and be distributed on the outer wall of Inserting Tube.Uniform multiple shock absorbing hole and subtract discharge orifice noise can be allowed more to discharge.
As preferred version of the present invention, all through between described Inserting Tube and four groups of dividing plates.
As preferred version of the present invention, the part that described Inserting Tube outer wall is provided with sound-absorption layer is evenly provided with several through hole, is provided with stainless steel filter screen outside through hole, is provided with cellophane or glass wool outside stainless steel filter screen.Through hole can allow noise pass insertion tube wall, is then absorbed by cellophane or glass wool.
As preferred version of the present invention, between described stiffening ring dividing plate, be provided with stiffening rib, outside described expansion anechoic chamber, be also provided with resistive plug.
In sum, owing to have employed technique scheme, the beneficial effect of the novel impedance type baffler of the present invention is: its structure is simple, is widely used, can absorbs noise reduction respectively according to the high and low frequency in noise.
Accompanying drawing explanation
Fig. 1 is the structural representation of the novel impedance type baffler of the present invention;
Fig. 2 is the sectional drawing of A-A in Fig. 1;
Fig. 3 is the sectional drawing of B-B in Fig. 1;
Fig. 4 is the partial enlarged drawing of C in Fig. 1;
Fig. 5 is the partial enlarged drawing of D in Fig. 1.
Mark in figure: 1-suction tude, 2-expands anechoic chamber, 3-dividing plate, 4-shock absorbing hole, 5-stiffening ring, 6-sound-absorption layer, and 7-subtracts discharge orifice, 8-Inserting Tube, 9-steam outlet pipe, 10-stainless steel filter screen, 11-cellophane or glass wool, 12-through hole, 13-stiffening rib, the resistive plug of 14-.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in detail.
In order to make object of the present invention, technological scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
embodiment 1
Novel impedance type baffler, comprise expansion anechoic chamber 2, described expansion anechoic chamber 2 is cylindrical shape, one end of described expansion anechoic chamber 2 is provided with suction tude 1, its the other end is provided with steam outlet pipe 9, dividing plate 3 is provided with in described expansion anechoic chamber 2 with on the face of the central axis of described suction tude 1, dividing plate 3 is provided with Inserting Tube 8, described Inserting Tube 8 is cylindrical shape, described Inserting Tube 8 is provided with shock absorbing hole 4 and subtracts discharge orifice 7, described Inserting Tube 8 is also provided with sound-absorption layer 6, described Inserting Tube 8 is identical with the center line expanding anechoic chamber 2 with suction tude 1, four groups of dividing plates are provided with in described expansion anechoic chamber 2, described dividing plate of often organizing has four pieces, four pieces of dividing plates 3 are equipped with Inserting Tube 8, expansion anechoic chamber 2 is divided into four identical sector shaped chambers by four pieces of dividing plates 3 centered by the center line expanding anechoic chamber 2, stiffening ring 5 is provided with between described dividing plate 3 and expansion anechoic chamber 2 inwall.
Described four groups of dividing plates are arranged in parallel to the central axis direction of steam outlet pipe 9 from suction tude 1 successively, on the Inserting Tube 8 of shock absorbing hole 4 between first group and second group of dividing plate, outer wall near the Inserting Tube 8 between second group of dividing plate and the 3rd group of dividing plate is provided with sound-absorption layer 6, the Inserting Tube 8 of second group of dividing plate and the 3rd group of dividing plate centre is provided with opening 7, and the outer wall of the Inserting Tube 8 between the 3rd group of dividing plate and the 4th group of dividing plate is provided with sound-absorption layer 6.
Described first group and second group of dividing plate and Inserting Tube 8 and expand between anechoic chamber 2 inwall and form shock absorbing room.
Described second group and the 3rd group of dividing plate and Inserting Tube 8 and expand to be formed to subtract between anechoic chamber 2 inwall and flow room.
Described shock absorbing hole 4 and subtract discharge orifice 7 and be provided with several, and be distributed on the outer wall of Inserting Tube 8.
embodiment 2
Novel impedance type baffler, comprise expansion anechoic chamber 2, described expansion anechoic chamber 2 is cylindrical shape, one end of described expansion anechoic chamber 2 is provided with suction tude 1, its the other end is provided with steam outlet pipe 9, dividing plate 3 is provided with in described expansion anechoic chamber 2 with on the face of the central axis of described suction tude 1, dividing plate 3 is provided with Inserting Tube 8, described Inserting Tube 8 is cylindrical shape, described Inserting Tube 8 is provided with shock absorbing hole 4 and subtracts discharge orifice 7, described Inserting Tube 8 is also provided with sound-absorption layer 6, described Inserting Tube 8 is identical with the center line expanding anechoic chamber 2 with suction tude 1, four groups of dividing plates are provided with in described expansion anechoic chamber 2, described dividing plate of often organizing has four pieces, four pieces of dividing plates 3 are equipped with Inserting Tube 8, expansion anechoic chamber 2 is divided into four identical sector shaped chambers by four pieces of dividing plates 3 centered by the center line expanding anechoic chamber 2, stiffening ring 5 is provided with between described dividing plate 3 and expansion anechoic chamber 2 inwall.
Described four groups of dividing plates are arranged in parallel to the central axis direction of steam outlet pipe 9 from suction tude 1 successively, on the Inserting Tube 8 of shock absorbing hole 4 between first group and second group of dividing plate, outer wall near the Inserting Tube 8 between second group of dividing plate and the 3rd group of dividing plate is provided with sound-absorption layer 6, the Inserting Tube 8 of second group of dividing plate and the 3rd group of dividing plate centre is provided with opening 7, and the outer wall of the Inserting Tube 8 between the 3rd group of dividing plate and the 4th group of dividing plate is provided with sound-absorption layer 6.
Described first group and second group of dividing plate and Inserting Tube 8 and expand between anechoic chamber 2 inwall and form shock absorbing room.
Described second group and the 3rd group of dividing plate and Inserting Tube 8 and expand to be formed to subtract between anechoic chamber 2 inwall and flow room.
Described shock absorbing hole 4 and subtract discharge orifice 7 and be provided with several, and be distributed on the outer wall of Inserting Tube 8.
All through between described Inserting Tube 8 and four groups of dividing plates.
embodiment 3
Novel impedance type baffler, comprise expansion anechoic chamber 2, described expansion anechoic chamber 2 is cylindrical shape, one end of described expansion anechoic chamber 2 is provided with suction tude 1, its the other end is provided with steam outlet pipe 9, dividing plate 3 is provided with in described expansion anechoic chamber 2 with on the face of the central axis of described suction tude 1, dividing plate 3 is provided with Inserting Tube 8, described Inserting Tube 8 is cylindrical shape, described Inserting Tube 8 is provided with shock absorbing hole 4 and subtracts discharge orifice 7, described Inserting Tube 8 is also provided with sound-absorption layer 6, described Inserting Tube 8 is identical with the center line expanding anechoic chamber 2 with suction tude 1, four groups of dividing plates are provided with in described expansion anechoic chamber 2, described dividing plate of often organizing has four pieces, four pieces of dividing plates 3 are equipped with Inserting Tube 8, expansion anechoic chamber 2 is divided into four identical sector shaped chambers by four pieces of dividing plates 3 centered by the center line expanding anechoic chamber 2, stiffening ring 5 is provided with between described dividing plate 3 and expansion anechoic chamber 2 inwall.
Described four groups of dividing plates are arranged in parallel to the central axis direction of steam outlet pipe 9 from suction tude 1 successively, on the Inserting Tube 8 of shock absorbing hole 4 between first group and second group of dividing plate, outer wall near the Inserting Tube 8 between second group of dividing plate and the 3rd group of dividing plate is provided with sound-absorption layer 6, the Inserting Tube 8 of second group of dividing plate and the 3rd group of dividing plate centre is provided with opening 7, and the outer wall of the Inserting Tube 8 between the 3rd group of dividing plate and the 4th group of dividing plate is provided with sound-absorption layer 6.
Described first group and second group of dividing plate and Inserting Tube 8 and expand between anechoic chamber 2 inwall and form shock absorbing room.
Described second group and the 3rd group of dividing plate and Inserting Tube 8 and expand to be formed to subtract between anechoic chamber 2 inwall and flow room.
Described shock absorbing hole 4 and subtract discharge orifice 7 and be provided with several, and be distributed on the outer wall of Inserting Tube 8.
All through between described Inserting Tube 8 and four groups of dividing plates.
The part that described Inserting Tube 8 outer wall is provided with sound-absorption layer 6 is evenly provided with several through hole 12, is provided with stainless steel filter screen 10 outside through hole 12, is provided with cellophane or glass wool 11 outside stainless steel filter screen 10.
embodiment 4
Novel impedance type baffler, comprise expansion anechoic chamber 2, described expansion anechoic chamber 2 is cylindrical shape, one end of described expansion anechoic chamber 2 is provided with suction tude 1, its the other end is provided with steam outlet pipe 9, dividing plate 3 is provided with in described expansion anechoic chamber 2 with on the face of the central axis of described suction tude 1, dividing plate 3 is provided with Inserting Tube 8, described Inserting Tube 8 is cylindrical shape, described Inserting Tube 8 is provided with shock absorbing hole 4 and subtracts discharge orifice 7, described Inserting Tube 8 is also provided with sound-absorption layer 6, described Inserting Tube 8 is identical with the center line expanding anechoic chamber 2 with suction tude 1, four groups of dividing plates are provided with in described expansion anechoic chamber 2, described dividing plate of often organizing has four pieces, four pieces of dividing plates 3 are equipped with Inserting Tube 8, expansion anechoic chamber 2 is divided into four identical sector shaped chambers by four pieces of dividing plates 3 centered by the center line expanding anechoic chamber 2, stiffening ring 5 is provided with between described dividing plate 3 and expansion anechoic chamber 2 inwall.
Described four groups of dividing plates are arranged in parallel to the central axis direction of steam outlet pipe 9 from suction tude 1 successively, on the Inserting Tube 8 of shock absorbing hole 4 between first group and second group of dividing plate, outer wall near the Inserting Tube 8 between second group of dividing plate and the 3rd group of dividing plate is provided with sound-absorption layer 6, the Inserting Tube 8 of second group of dividing plate and the 3rd group of dividing plate centre is provided with opening 7, and the outer wall of the Inserting Tube 8 between the 3rd group of dividing plate and the 4th group of dividing plate is provided with sound-absorption layer 6.
Described first group and second group of dividing plate and Inserting Tube 8 and expand between anechoic chamber 2 inwall and form shock absorbing room.
Described second group and the 3rd group of dividing plate and Inserting Tube 8 and expand to be formed to subtract between anechoic chamber 2 inwall and flow room.
Described shock absorbing hole 4 and subtract discharge orifice 7 and be provided with several, and be distributed on the outer wall of Inserting Tube 8.
All through between described Inserting Tube 8 and four groups of dividing plates.
The part that described Inserting Tube 8 outer wall is provided with sound-absorption layer 6 is evenly provided with several through hole 12, is provided with stainless steel filter screen 10 outside through hole 12, is provided with cellophane or glass wool 11 outside stainless steel filter screen 10.
Be provided with stiffening rib 13 between described stiffening ring 5 dividing plate 3, described expansion anechoic chamber 2 is outer is also provided with resistive plug 14.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. novel impedance type baffler, it is characterized in that: comprise expansion anechoic chamber (2), described expansion anechoic chamber (2) is cylindrical shape, one end of described expansion anechoic chamber (2) is provided with suction tude (1), its the other end is provided with steam outlet pipe (9), dividing plate (3) is provided with in described expansion anechoic chamber (2) with on the face of the central axis of described suction tude (1), dividing plate (3) is provided with Inserting Tube (8), described Inserting Tube (8) is cylindrical shape, described Inserting Tube (8) is provided with shock absorbing hole (4) and subtracts discharge orifice (7), described Inserting Tube (8) is also provided with sound-absorption layer (6), described Inserting Tube (8) is identical with the center line expanding anechoic chamber (2) with suction tude (1), four groups of dividing plates are provided with in described expansion anechoic chamber (2), described dividing plate of often organizing has four pieces, four pieces of dividing plates (3) are equipped with Inserting Tube (8), four pieces of dividing plates (3) will be expanded anechoic chamber (2) and be divided into four identical sector shaped chambers centered by the center line expanding anechoic chamber (2), stiffening ring (5) is provided with between described dividing plate (3) and expansion anechoic chamber (2) inwall.
2. novel impedance type baffler according to claim 1, it is characterized in that: described four groups of dividing plates are arranged in parallel to the central axis direction of steam outlet pipe (9) from suction tude (1) successively, on the Inserting Tube (8) of shock absorbing hole (4) between first group and second group of dividing plate, outer wall near the Inserting Tube (8) between second group of dividing plate and the 3rd group of dividing plate is provided with sound-absorption layer (6), the Inserting Tube (8) of second group of dividing plate and the 3rd group of dividing plate centre is provided with opening (7), the outer wall of the Inserting Tube (8) between the 3rd group of dividing plate and the 4th group of dividing plate is provided with sound-absorption layer (6).
3. novel impedance type baffler according to claim 1, is characterized in that: described first group and second group of dividing plate and Inserting Tube (8) and expand between anechoic chamber (2) inwall and form shock absorbing room.
4. novel impedance type baffler according to claim 1, is characterized in that: described second group and the 3rd group of dividing plate and Inserting Tube (8) and expand to be formed to subtract between anechoic chamber (2) inwall and flow room.
5. novel impedance type baffler according to claim 1, is characterized in that: described shock absorbing hole (4) and subtract discharge orifice (7) and be provided with several, and is distributed on the outer wall of Inserting Tube (8).
6. novel impedance type baffler according to claim 1, is characterized in that: all through between described Inserting Tube (8) and four groups of dividing plates.
7. novel impedance type baffler according to claim 1, it is characterized in that: the part that described Inserting Tube (8) outer wall is provided with sound-absorption layer (6) is evenly provided with several through hole (12), be provided with stainless steel filter screen (10) outside through hole (12), outside stainless steel filter screen (10), be provided with cellophane or glass wool (11).
8. novel impedance type baffler according to claim 1, is characterized in that: be provided with stiffening rib (13) between described stiffening ring (5) dividing plate (3), described expansion anechoic chamber (2) is also provided with resistive plug (14) outward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510205786.5A CN104775872A (en) | 2015-04-28 | 2015-04-28 | Novel impedance type silencer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510205786.5A CN104775872A (en) | 2015-04-28 | 2015-04-28 | Novel impedance type silencer |
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| Publication Number | Publication Date |
|---|---|
| CN104775872A true CN104775872A (en) | 2015-07-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510205786.5A Pending CN104775872A (en) | 2015-04-28 | 2015-04-28 | Novel impedance type silencer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106401697A (en) * | 2016-11-07 | 2017-02-15 | 沈阳航天新光集团有限公司 | Complex silencer for diesel generator unit |
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| US20040163887A1 (en) * | 2003-02-25 | 2004-08-26 | Ziehl John C. | Exhaust silencer system |
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| CN204532473U (en) * | 2015-04-28 | 2015-08-05 | 成都济柴动力设备有限公司 | A kind of novel impedance type baffler |
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2015
- 2015-04-28 CN CN201510205786.5A patent/CN104775872A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040163887A1 (en) * | 2003-02-25 | 2004-08-26 | Ziehl John C. | Exhaust silencer system |
| CN1884801A (en) * | 2005-06-21 | 2006-12-27 | 诸城市海得威机械有限公司 | Automobile exhaust muffler |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106401697A (en) * | 2016-11-07 | 2017-02-15 | 沈阳航天新光集团有限公司 | Complex silencer for diesel generator unit |
| CN106401697B (en) * | 2016-11-07 | 2019-06-04 | 沈阳航天新光集团有限公司 | A kind of diesel generating set composite muffler |
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