CN219711800U - Roots blower fan silencing device - Google Patents
Roots blower fan silencing device Download PDFInfo
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- CN219711800U CN219711800U CN202320780312.3U CN202320780312U CN219711800U CN 219711800 U CN219711800 U CN 219711800U CN 202320780312 U CN202320780312 U CN 202320780312U CN 219711800 U CN219711800 U CN 219711800U
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- 230000030279 gene silencing Effects 0.000 title claims abstract description 63
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- 239000004744 fabric Substances 0.000 claims description 7
- 239000000835 fiber Substances 0.000 claims description 7
- 239000003365 glass fiber Substances 0.000 claims description 7
- 230000003584 silencer Effects 0.000 claims description 7
- 239000011358 absorbing material Substances 0.000 claims description 6
- 238000007689 inspection Methods 0.000 description 7
- 238000010521 absorption reaction Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 101100230509 Neurospora crassa (strain ATCC 24698 / 74-OR23-1A / CBS 708.71 / DSM 1257 / FGSC 987) hat-1 gene Proteins 0.000 description 3
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- 230000007613 environmental effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 210000000653 nervous system Anatomy 0.000 description 1
- 210000002445 nipple Anatomy 0.000 description 1
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- Exhaust Silencers (AREA)
Abstract
The utility model relates to the technical field of silencing of a Roots blower, and particularly discloses a Roots blower silencing device which comprises an air inlet connecting pipe communicated with an air outlet pipeline of the Roots blower and a plurality of honeycomb pipes communicated with the air inlet connecting pipe, wherein the air inlet connecting pipe is wrapped with the air inlet main pipe, the air inlet main pipe is communicated with a silencing main pipe used for wrapping the honeycomb pipes, silencing structures used for noise reduction are arranged in the air inlet main pipe and the silencing main pipe, and an anti-drop structure is arranged above the silencing main pipe.
Description
Technical Field
The utility model relates to the technical field of Roots blower silencing, and particularly discloses a Roots blower silencing device.
Background
The Loz blower belongs to positive displacement blower, and has impeller end face, front and back end covers. The principle is a rotary compressor which compresses and delivers gas by means of the relative movement of two lobed rotors in a cylinder. The air blower has simple structure and convenient manufacture, is widely applied to oxygenation, sewage treatment aeration and cement transportation of aquaculture, and is more suitable for a gas transportation and pressurization system in low-pressure occasions.
When the Roots blower is currently applied to the ash purification blowing and incineration system, due to structural design reasons, when air flows through the outlet of the blower, the Roots blower is compressed by two impellers, namely, compressed by two blade-shaped rotors and then discharged from an air outlet pipeline, and in the compression process of the blade-shaped rotors, larger airflow noise is generated, the higher the wind speed is, the larger the noise is, and friction is easily generated in the operation process of internal parts of the Roots blower, so that the Roots blower emits large noise. Generally, when the lorentz fan is installed, the lorentz fan is installed in the sound insulation board room, but the noise at the outlet pipeline of the lorentz fan is high and is 120 db or more for a long time.
In the working process of the Lotz fan, inspection personnel are required to detect working conditions and field working conditions of the Lotz fan frequently. For the patrol personnel who reciprocate on the spot for a long time, the environment with the noise reaching more than 120 dB is often exposed, so that the hearing of the person is easily damaged, and the nervous system, the visual system, the intelligence and the like of the person are affected to different degrees.
Accordingly, the inventors have provided a Roots blower muffler to solve the above-mentioned problems.
Disclosure of Invention
The utility model aims to solve the problem that the health of an inner inspection person entering a working field is affected by the noise continuously generated by a lobed rotor at the outlet of a Lotz fan in the working field of the traditional Lotz fan.
In order to achieve the above purpose, the basic scheme of the utility model provides a Roots blower silencer, which comprises an air inlet connecting pipe communicated with an air outlet pipeline of a Roots blower and a plurality of honeycomb pipes communicated with the air inlet connecting pipe, wherein the air inlet connecting pipe is wrapped with an air inlet main pipe, the air inlet main pipe is communicated with a silencing main pipe used for wrapping the honeycomb pipes, silencing structures used for reducing noise are arranged in the air inlet main pipe and the silencing main pipe, and an anti-drop structure is further arranged above the silencing main pipe.
Further, a reinforcing plate is arranged between the air inlet main pipe and the silencing main pipe, and an air outlet for air flow to pass through is arranged on the reinforcing plate.
Further, the silencing structure in the air inlet main pipe is a first silencing structure, and the silencing structure in the silencing main pipe is a second silencing structure.
Further, the first silencing structure comprises an outer shell, a porous plate which is arranged in the outer shell and used for wrapping the air inlet connecting pipe, and a sound absorbing material which is arranged between the porous plate and the outer shell.
Further, the second silencing structure comprises a silencing shell, a sound-absorbing pore plate arranged on the inner side of the silencing shell and wrapped on the outer side of the honeycomb tube respectively, and sound-absorbing fiber cotton arranged between the silencing shell and the sound-absorbing pore plate.
Further, glass fiber cloth is arranged between the sound absorbing pore plate and the honeycomb tube.
Further, the anti-drop structure comprises a rain cap arranged at the top end of the silencing main pipe and a filter screen arranged at the top end of the silencing main pipe.
The principle and effect of this scheme lie in:
1. according to the utility model, the air inlet main pipe and the silencing main pipe are in butt joint with the air outlet pipeline of the Loz fan, and the noise influence is reduced through the first silencing structure and the second silencing structure in the air inlet main pipe and the silencing main pipe.
2. Compared with the prior art, the sound absorption material on the air inlet main pipe forms the sound absorption structure through the sound absorption shell, the sound absorption fiber cotton, the sound absorption pore plate, the glass fiber cloth and the honeycomb tube on the sound absorption main pipe, so that the noise at the outlet of the Lotz fan can be reduced, the influence of the noise in the inspection operation environment is greatly reduced, the inspection staff is prevented from being interfered by the noise in the inspection process, the health of the inspection staff is ensured, and the problem that the health of the inner inspection staff in the working field can be influenced due to the noise continuously generated by the blade-shaped rotor at the outlet of the Lotz fan in the working field of the traditional Lotz fan is solved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 shows a schematic diagram of a Roots blower muffler device according to an embodiment of the present utility model;
FIG. 2 shows a cross-sectional view of a silencing main pipe of a Roots blower silencing device according to an embodiment of the present utility model;
fig. 3 shows a cross-sectional view of a silencing main pipe of a Roots blower silencing device according to an embodiment of the present utility model.
Detailed Description
In order to further describe the technical means and effects adopted by the present utility model for achieving the intended purpose, the following detailed description will refer to the specific implementation, structure, characteristics and effects according to the present utility model with reference to the accompanying drawings and preferred embodiments.
Reference numerals in the drawings of the specification include: the rain cap 1, the lifting lug 2, the air inlet main pipe 3, the honeycomb pipe 4, the reinforcing plate 5, the support 6, the sound absorbing material 7, the porous plate 8, the bottom plate 9, the air inlet connecting pipe 10, the sound absorbing fiber cotton 11, the sound absorbing porous plate 12 and the glass fiber cloth 13.
A Roots blower fan silencer, an embodiment of which is shown in FIG. 1:
comprises an air inlet main pipe 3 and a silencing main pipe. The silencing main pipe is arranged above the air inlet main pipe 3, and is communicated with the air inlet main pipe 3.
An air inlet connecting pipe 10 is arranged in the air inlet main pipe 3, the air inlet connecting pipe 10 extends to the lower part of the air inlet main pipe 3 and is used for paying out the air inlet main pipe 3, and a flange is also arranged at the end part of the air inlet connecting pipe 10, which is positioned below the air inlet main pipe 3, and is used for butting an air outlet pipeline of an external Loz fan and used for air inlet.
A bottom plate 9 is also hermetically arranged at the bottom end of the air inlet main pipe 3. Of course, a hole is formed in the bottom plate 9 through which the intake nipple 10 passes. A reinforcing plate 5 is also arranged at the top end of the air inlet main pipe 3 in a sealing way, and an air outlet for ventilation is also arranged on the reinforcing plate 5. After the air inlet connecting pipe 10 is communicated with the external pipeline, air flow can be blown into the air inlet connecting pipe 10 from the external pipeline, and then flows into the silencing main pipe from the air inlet connecting pipe 10 through the air outlet on the reinforcing plate 5.
In the air inlet main pipe 3, a circle of closed porous plates 8 are also arranged in the outer shell of the air inlet main pipe 3, and the porous plates 8 are propped against the bottom plate 9 and the reinforcing plate 5. A sound absorbing material 7 is filled between the porous plate 8 and the outer shell of the air intake main pipe 3. The outer shell, the porous plate and the sound absorbing material are of a first silencing structure.
A circle of closed support 6 is also arranged on the outer wall of the air inlet main pipe 3.
The main silencing pipe comprises an outermost silencing shell, six honeycomb pipes 4 are arranged in the silencing shell, the bottom ends of the honeycomb pipes 4 are arranged at air outlets on the reinforcing plate 5 and are communicated with the air outlets, and wind flowing out of the air outlets enters the honeycomb pipes 4. In this embodiment, as shown in fig. 2, one honeycomb tube 4 is coaxially disposed with the main muffler tube, and the remaining honeycomb tubes 4 are circumferentially uniformly distributed on the outer side of the middle honeycomb tube 4. The silencing shell, the sound-absorbing pore plate and the sound-absorbing fiber cotton are of a second silencing structure.
And a lifting lug 2 is welded around the silencing main pipe respectively.
As shown in fig. 3, on the outer wall of the honeycomb tube 4 inside the silencing casing of the silencing main tube, a sound absorbing orifice plate 12 is also installed, and the sound absorbing orifice plates 12 are wrapped on the outer side of the honeycomb tube 4. A glass fiber cloth 13 is also arranged between the inner wall of the sound absorbing pore plate 12 and the outer wall of the honeycomb tube 4. Between the sound-deadening housing and the sound-absorbing orifice plate 12, sound-absorbing cellucotton 11 is further filled. The five-layer sound-absorbing structure is formed by combining the sound-absorbing shell, the sound-absorbing fiber cotton 11, the sound-absorbing pore plate 12, the glass fiber cloth 13 and the honeycomb tube 4, so that the vibration of the air inlet main tube 3 and the sound-absorbing main tube is damped by the wind blown out from the air outlet.
The top section of the silencing main pipe is also provided with a rain hat 1, the top end port of the silencing main pipe is shielded by the rain hat 1, a filter screen is additionally arranged between the rain hat 1 and the silencing main pipe and used for preventing rainwater from sliding in and preventing foreign matters from falling into the silencing main pipe, the air inlet main pipe 3 and then entering the rotor of the Lotz fan through the air inlet connecting pipe 10, so that the suction of particles by the Lotz fan is avoided, and the internal operation stability of bottom equipment is ensured. The rain cap 1 and the filter screen are of an anti-falling structure.
Through the air inlet main pipe 3 and the amortization main pipe of packing into, through the sound absorbing material 7 on the air inlet main pipe 3, through sound absorbing shell on the amortization main pipe, inhale the sound fibre cotton 11, inhale sound orifice plate 12, glass fibre cloth 13 and honeycomb 4 combination formation amortization structure, can reduce the noise of litz fan exit to 60-80 decibel, compare in 120 decibel high pitch, reduce the operation environmental noise influence that patrols and examines by a wide margin, ensure to patrol and examine staff and avoid the interference of noise at the in-process of patrolling and examining, guarantee to patrol and examine staff's health.
The present utility model is not limited to the above embodiments, but is capable of modification and variation in detail, and other modifications and variations can be made by those skilled in the art without departing from the scope of the present utility model.
Claims (5)
1. The utility model provides a roots fan silencing device which characterized in that: including with the play tuber pipe intercommunication of lorentz fan take over with a plurality of honeycomb pipes of taking over the intercommunication that admits air, the parcel of taking over outside of admitting air has the air to admit air to be responsible for, the intercommunication has the amortization that is used for wrapping up the honeycomb pipe to admit air to be responsible for, the amortization that all is equipped with in being responsible for with the amortization and is used for making an uproar in the amortization is responsible for, amortization is responsible for the top and still is equipped with anti-drop structure.
2. The silencer of the Roots blower according to claim 1, wherein a reinforcing plate is arranged between the main air inlet pipe and the main silencer pipe, and an air outlet through which air flows is arranged on the reinforcing plate.
3. The Roots blower fan silencer according to claim 1, wherein the silencing structure in the main air intake pipe is a first silencing structure, the silencing structure in the main air intake pipe is a second silencing structure, the first silencing structure comprises an outer shell, a porous plate arranged in the outer shell and used for wrapping the air intake pipe, and a sound absorbing material arranged between the porous plate and the outer shell, and the second silencing structure comprises a silencing shell, a sound absorbing pore plate arranged on the inner side of the silencing shell and wrapped on the outer side of the honeycomb pipe respectively, and sound absorbing fiber cotton arranged between the silencing shell and the sound absorbing pore plate.
4. The silencer of Roots blower according to claim 3, wherein a glass fiber cloth is further arranged between the sound absorbing orifice plate and the honeycomb tube.
5. The silencer of a Roots blower according to claim 1, wherein the anti-falling structure comprises a rain cap arranged at the top end of the silencing main pipe and a filter screen arranged at the top end of the silencing main pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320780312.3U CN219711800U (en) | 2023-04-11 | 2023-04-11 | Roots blower fan silencing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320780312.3U CN219711800U (en) | 2023-04-11 | 2023-04-11 | Roots blower fan silencing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219711800U true CN219711800U (en) | 2023-09-19 |
Family
ID=87978051
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320780312.3U Active CN219711800U (en) | 2023-04-11 | 2023-04-11 | Roots blower fan silencing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219711800U (en) |
-
2023
- 2023-04-11 CN CN202320780312.3U patent/CN219711800U/en active Active
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