CN211343366U - Exhaust silencing assembly of screw blower - Google Patents
Exhaust silencing assembly of screw blower Download PDFInfo
- Publication number
- CN211343366U CN211343366U CN201921830509.3U CN201921830509U CN211343366U CN 211343366 U CN211343366 U CN 211343366U CN 201921830509 U CN201921830509 U CN 201921830509U CN 211343366 U CN211343366 U CN 211343366U
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- exhaust
- silencer
- flange
- air inlet
- plate
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Abstract
The utility model discloses a screw blower exhausts amortization assembly, this kind of screw blower exhausts amortization assembly include amortization unit, air inlet flange, gaseous non return unit and exhaust flange, amortization unit side is provided with communicating air inlet flange with it, and gaseous non return unit and exhaust flange are connected gradually to the amortization unit gas outlet, the amortization unit includes muffler casing, muffler otter board, filler, apron, relief valve, temperature sensor and shrouding, is provided with four muffler otter boards that are the rectangle and place in the muffler casing, is provided with the filler in the cavity that muffler otter board outer wall and muffler casing inner wall formed. Through the mode, the utility model discloses an abrupt change in pipeline cross-section causes the change of impedance and produces reflection, the interference of sound energy in the sound transmission process, returns the sound wave reflection to the sound source; the noise transmission can be reduced, and the noise generated by the gas flow can be weakened.
Description
Technical Field
The utility model relates to a noise treatment technical field especially relates to a screw air-blower exhaust amortization assembly.
Background
The screw type oilless blower is a novel air compressor of compression technology, different from Roots blower and the like, the screw type blower realizes internal compression in the process of gas conveying in a cavity, therefore, the screw has the advantages of most Roots, and simultaneously has higher efficiency than Roots, and the process of gas conveying compression is continuous and gradual, airflow pulsation is lower, exhaust noise, temperature control and the like are superior to traditional blowers such as Roots and the like, and the screw type oilless blower is taken as a rotary blower type newly developed in recent years.
Because screw-blower is different from conventional screw compressor, there is injection lubricating oil as the medium in the conventional screw compressor compression chamber, play the lubrication, the cooling, effect such as amortization, however screw-blower technology belongs to no oil machine, there is not lubricating oil in the compression chamber, the biggest defect can lead to the mechanical noise in the compression chamber, the air current noise can spill over through the gas vent, under the form now, the environmental protection category is also brought into to the noise, if screw-blower exhaust noise is big, be not conform to national noise standard, the screw-blower low pressure, large discharge capacity, current common muffler air current resistance in the market is big, the discharge capacity is little, can not satisfy the air-blower exhaust and. Sound requirement
SUMMERY OF THE UTILITY MODEL
The utility model mainly solves the technical problem of providing an exhaust silencing assembly of a screw blower, which causes the change of impedance in the sound transmission process through the sudden change of the cross section of a pipeline to generate the reflection and interference of sound energy and reflect the sound waves back to the sound source; the noise transmission can be reduced, and the noise generated by the gas flow can be weakened.
In order to solve the technical problem, the utility model discloses a technical scheme be: provides an exhaust silencing assembly of a screw blower, which comprises a silencing unit, an air inlet flange, a gas check unit and an exhaust flange, the side end of the silencing unit is provided with an air inlet flange communicated with the silencing unit, the air outlet of the silencing unit is sequentially connected with an air non-return unit and an air exhaust flange, the silencing unit comprises a silencer shell, a silencer screen plate, filler, a cover plate, a safety valve, a temperature sensor and a sealing plate, the silencer shell is cylindrical, four silencer screen plates which are placed in a rectangular mode are arranged in the silencer shell, the air inlet flange is communicated with the silencer screen plates, fillers are arranged in a cavity formed by the outer wall of each silencer screen plate and the inner wall of the silencer shell, a cover plate is packaged at the upper end of the silencer shell, a safety valve and a temperature sensor are mounted on the cover plate, and a sealing plate is packaged on the silencer shell at the bottom of each filler.
Preferably, the silencer screen plate is provided with silencing holes in an array.
Preferably, the filler material is a wire ball.
Preferably, the gas non-return unit comprises a one-way cavity, a one-way valve seat, a one-way valve plate, a pressure sensor and a mounting rib plate, the one-way cavity is abutted to the air outlet end of the silencer shell, the one-way valve seat is arranged between the one-way cavity and the silencer shell, an annular groove is formed in the bottom surface of the one-way valve seat, the rotatable one-way valve plate is inserted into the one-way valve seat at the annular groove, the one-way valve plate can rotate to be matched with the annular groove, and the pressure sensor and the mounting rib.
Preferably, the exhaust flange is in butt joint with the one-way cavity, the cross sections of the exhaust flange and the air inlet flange are circular, and the cross section of the exhaust flange is larger than that of the air inlet flange.
Preferably, the exhaust flange is a metal corrugated pipe.
Compared with the prior art, the beneficial effects of the utility model are that:
the gas discharged by the blower is guided into the square chamber through the gas flow with the circular cross section, the change of the shape of the gas flow can achieve the antagonistic silencing effect of local structural factors, impedance change is caused in the sound transmission process through the abrupt change of the cross section of the pipeline to generate reflection and interference of sound energy, and the sound wave is reflected back to the sound source;
the noise continuously weakens the sound wave through the metal wire ball gap, and the purpose of reducing the outward transmission of the noise is achieved;
the exhaust section is larger than the air inlet section, so that the gas flow speed is reduced, and the noise generated by gas flow is weakened;
the metal corrugated pipe has a damping effect.
Drawings
Fig. 1 is a schematic view of an expanded structure of an exhaust silencer assembly of a screw blower.
FIG. 2 is a cross-sectional view of a screw blower exhaust silencer assembly.
FIG. 3 is a cross-sectional view of a sound attenuating unit of a screw blower exhaust sound attenuating assembly.
FIG. 4 is a schematic view of a gas check unit of an exhaust silencer assembly of a screw blower.
Detailed Description
The following detailed description of the preferred embodiments of the present invention will be provided to enable those skilled in the art to more easily understand the advantages and features of the present invention, and to make clear and definite definitions of the protection scope of the present invention.
Referring to fig. 1 to 4, an embodiment of the present invention includes:
an exhaust silencing assembly of a screw blower comprises a silencing unit 1, an air inlet flange 2, a gas non-return unit 3 and an exhaust flange 4, wherein the air inlet flange 2 communicated with the silencing unit 1 is arranged at the side end of the silencing unit 1, the air outlet of the silencing unit 1 is sequentially connected with the gas non-return unit 3 and the exhaust flange 4, the silencing unit 1 comprises a silencer shell 11, a silencer screen 12, a filler 13, a cover plate 14, a safety valve 15, a temperature sensor 16 and a sealing plate 17, the silencer shell 11 is cylindrical, four silencer screen plates 12 which are arranged in a rectangular shape are arranged in the silencer shell 11, the air inlet flange 2 is communicated with the silencer screen plates 12, the filler 13 is arranged in a cavity formed by the outer wall of the silencer screen plate 12 and the inner wall of the silencer shell 11, the cover plate 14 is packaged at the upper end of the silencer shell 11, and the safety valve 15 and the temperature sensor 16 are arranged on the cover plate 14, a sealing plate 17 is packaged on a silencer shell 11 at the bottom of the filler 13, gas discharged by the blower is guided into a square cavity of the silencing unit 1 through circular section gas flow of the air inlet flange 2, the change of the shape of the gas flow can achieve the antagonistic silencing effect of local structural factors, impedance change is caused in the sound propagation process through abrupt change of the section of the pipeline, sound energy reflection and interference are generated, and sound waves are reflected back to a sound source.
The silencer screen plate 12 is provided with silencing holes in an array manner.
The filler 13 is made of metal wire balls, and noise continuously weakens sound waves through gaps among the metal wire balls, so that the aim of reducing the outward transmission of the noise is fulfilled.
The gas check unit 3 comprises a one-way cavity 31, a one-way valve seat 32, a one-way valve plate 33, a pressure sensor 34 and a mounting rib plate 35, the one-way cavity 31 is abutted to the air outlet end of the silencer shell 11, the one-way valve seat 32 is arranged between the one-way cavity 31 and the silencer shell 11, an annular groove is formed in the bottom surface of the one-way valve seat 32, the rotatable one-way valve plate 33 is inserted into the one-way valve seat 32 at the annular groove, the one-way valve plate 33 can rotate to be matched with the annular groove, and the pressure sensor 34 and the mounting rib plate 35.
The exhaust flange 4 is in butt joint with the one-way cavity 31, the sections of the exhaust flange 4 and the air inlet flange 2 are circular, the section of the exhaust flange 4 is larger than that of the air inlet flange 2, the section of the exhaust flange is larger than that of the air inlet flange, the flow speed of gas is reduced, and noise generated by gas flow is weakened.
The exhaust flange 4 adopts a metal corrugated pipe, and the metal corrugated pipe has a damping effect.
The utility model relates to a screw blower exhaust silencing assembly, which causes impedance change in the sound transmission process through the abrupt change of the pipeline section to generate sound energy reflection and interference, and reflects the sound wave back to the sound source; the noise transmission can be reduced, and the noise generated by the gas flow can be weakened.
The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.
Claims (6)
1. The utility model provides a screw blower exhaust amortization assembly which characterized in that: the exhaust and silencing assembly of the screw blower comprises a silencing unit, an air inlet flange, a gas non-return unit and an exhaust flange, wherein the air inlet flange is arranged at the side end of the silencing unit and communicated with the silencing unit, an air outlet of the silencing unit is sequentially connected with the gas non-return unit and the exhaust flange, the silencing unit comprises a silencer shell, a silencer screen plate, a filler, a cover plate, a safety valve, a temperature sensor and a sealing plate, the silencer shell is cylindrical, four silencer screen plates which are placed in a rectangular shape are arranged in the silencer shell, the air inlet flange is communicated with the silencer screen plate, the filler is arranged in a cavity formed by the outer wall of the silencer screen plate and the inner wall of the silencer shell, the cover plate is packaged at the upper end of the silencer shell, the safety valve and the temperature sensor are mounted on the cover plate, and.
2. The screw blower exhaust muffler assembly according to claim 1, wherein: and silencing holes are formed in the silencer screen plate in an array mode.
3. The screw blower exhaust muffler assembly according to claim 1, wherein: the filler is made of metal wire balls.
4. The screw blower exhaust muffler assembly according to claim 1, wherein: the gas non-return unit comprises a one-way cavity, a one-way valve seat, a one-way valve plate, a pressure sensor and a mounting rib plate, the one-way cavity is abutted to the air outlet end of the silencer shell, the one-way valve seat is arranged between the one-way cavity and the silencer shell, an annular groove is formed in the bottom surface of the one-way valve seat, the rotatable one-way valve plate is inserted into the one-way valve seat at the annular groove, the one-way valve plate can rotate to be matched with the annular groove, and the pressure sensor and the.
5. The screw blower exhaust muffler assembly according to claim 1, wherein: the exhaust flange is in butt joint with the one-way cavity, the cross sections of the exhaust flange and the air inlet flange are circular, and the cross section of the exhaust flange is larger than that of the air inlet flange.
6. The screw blower exhaust muffler assembly according to claim 1, wherein: the exhaust flange is a metal corrugated pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921830509.3U CN211343366U (en) | 2019-10-29 | 2019-10-29 | Exhaust silencing assembly of screw blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921830509.3U CN211343366U (en) | 2019-10-29 | 2019-10-29 | Exhaust silencing assembly of screw blower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211343366U true CN211343366U (en) | 2020-08-25 |
Family
ID=72091310
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921830509.3U Active CN211343366U (en) | 2019-10-29 | 2019-10-29 | Exhaust silencing assembly of screw blower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211343366U (en) |
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2019
- 2019-10-29 CN CN201921830509.3U patent/CN211343366U/en active Active
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