CN215949819U - Assembled sound insulation cover for Roots blower - Google Patents
Assembled sound insulation cover for Roots blower Download PDFInfo
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- CN215949819U CN215949819U CN202122570438.1U CN202122570438U CN215949819U CN 215949819 U CN215949819 U CN 215949819U CN 202122570438 U CN202122570438 U CN 202122570438U CN 215949819 U CN215949819 U CN 215949819U
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- sound insulation
- air inlet
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- plate
- sound
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- 238000009413 insulation Methods 0.000 title claims abstract description 67
- 238000013016 damping Methods 0.000 claims description 29
- 239000011521 glass Substances 0.000 claims description 24
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 17
- 229910052749 magnesium Inorganic materials 0.000 claims description 17
- 239000011777 magnesium Substances 0.000 claims description 17
- 229910000831 Steel Inorganic materials 0.000 claims description 13
- 239000010959 steel Substances 0.000 claims description 13
- 230000017525 heat dissipation Effects 0.000 claims description 11
- 239000004745 nonwoven fabric Substances 0.000 claims description 11
- 239000011491 glass wool Substances 0.000 claims description 8
- 229920000742 Cotton Polymers 0.000 claims description 7
- 230000003584 silencer Effects 0.000 claims description 5
- 238000010521 absorption reaction Methods 0.000 claims description 3
- 239000003292 glue Substances 0.000 claims description 3
- 238000004080 punching Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 description 4
- 239000011490 mineral wool Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000000644 propagated effect Effects 0.000 description 2
- 230000001902 propagating effect Effects 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 230000002238 attenuated effect Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
The utility model discloses an assembled sound insulation cover for a Roots blower, which comprises four upright posts, wherein the four upright posts surround and form a rectangle on the ground and extend along the vertical direction, the side surface of the rectangular sound insulation cover is formed between two adjacent upright posts, the side surfaces of three adjacent rectangular sound insulation covers are strong sound insulation surfaces, the rest one side surface adopts a door type sound insulation plate, the strong sound insulation surfaces comprise an air inlet side outer plate and an air inlet side sound insulation plate, the air inlet side outer plate and the air inlet side sound insulation plate are arranged between the two adjacent upright posts and positioned at the outer side, the distance between the air inlet side outer plate and the air inlet side sound insulation plate is 100mm, the bottom of the air inlet side sound insulation plate is 100mm shorter than that of the air inlet side outer plate, a shutter is welded on the air inlet side outer plate, the door type sound insulation plate comprises a door frame arranged between the two adjacent upright posts, so as to form a sound insulation door connected with the door frame through a hinge, an opening for a fan air outlet pipeline to pass through is formed on any strong sound insulation surface, the upper sound insulation board forming the closed cover body is arranged above the strong sound insulation surface and the door type sound insulation board.
Description
Technical Field
The utility model belongs to the technical field of Roots blower parts, and particularly relates to an assembled sound insulation cover for a Roots blower.
Background
The Roots blower is widely applied to the industries of sewage treatment, petrochemical industry, papermaking, coal and the like as general mechanical equipment. The noise mainly produced when the Roots blower operates is as follows: rotational noise caused by rotation of the fan rotor; the high-speed airflow generates vortex noise caused by a turbulent boundary layer; mechanical noise caused by casing vibration, unstable fixation of a foundation or a pipeline, unbalanced rotation of an impeller and the like; the alternating magnetic field causes electromagnetic noise caused by stator and rotor vibration. The Roots blower has wide noise frequency band, prominent middle and low frequency and high sound level. The middle and low frequency noise has strong penetrating power and is easy to influence the life of workers and surrounding residents.
SUMMERY OF THE UTILITY MODEL
The technical problem is as follows: the utility model aims to solve the problem that the existing sound insulation measures of the Roots blower cannot effectively reduce the influence of medium and low frequency noise.
The technical scheme is as follows: the utility model adopts the following technical scheme:
an assembled sound insulation cover for a Roots blower comprises four upright posts which surround the ground to form a rectangle and extend along the vertical direction, the side surface of the rectangular sound insulation cover is formed between two adjacent upright posts, wherein, the side surfaces of three adjacent rectangular sound insulation covers are strong sound insulation surfaces, the rest one side surface adopts a door type sound insulation plate, the strong sound insulation surface comprises an air inlet side outer plate and an air inlet side sound insulation plate, wherein the air inlet side outer plate is arranged between two adjacent upright posts and is positioned on the outer side, the air inlet side sound insulation plate is positioned on the inner side, the distance between the air inlet side outer plate and the air inlet side sound insulation plate is 100mm, the bottom of the air inlet side sound insulation plate is 100mm shorter than the bottom of the air inlet side outer plate, a shutter is welded on the air inlet side outer plate, the door type sound insulation plate comprises a door frame arranged between two adjacent upright posts, with the soundproof door of being connected through the hinge and door frame, arbitrary strong sound insulation face sets up the opening that supplies fan air outlet pipeline to pass through, and strong sound insulation face and gate-type acoustic celotex board top still are equipped with the last acoustic celotex board of constituteing the enclosure body.
Furthermore, the upper sound insulation plate is provided with a heat dissipation port, and a heat dissipation port silencer, an axial flow fan and a rain cover are arranged in the heat dissipation port from bottom to top.
Further, all set up the puigging in air inlet side acoustic celotex board, the last acoustic celotex board, door frame and the soundproof door.
Furthermore, the soundproof door is two open-close type soundproof doors.
Furthermore, the inside centrifugal glass wool puigging, non-woven fabrics layer and the abatvoix that punches a hole that sets gradually that includes of thermovent muffler.
Further, the puigging includes steel sheet, rubber damping layer, glass magnesium board restraint layer, the cotton puigging of centrifugal glass, non-woven fabrics layer and the abatvoix that punches a hole that sets gradually.
Furthermore, glue is adopted to bond between the steel plate and the rubber damping layer, and between the rubber damping layer and the glass magnesium board restraint layer.
When this scheme of adoption, sound reaches the sound-proof housing outside from the sound-proof housing inboard and need pass the air bed, the abatvoix that punches a hole, non-woven fabrics layer, the cotton puigging of centrifugal glass, glass magnesium board restraint layer, rubber damping layer and steel sheet, above various materials are because of the density difference, and the speed that sound propagated in the material of difference is different, is equivalent to sound and meets different hindrance at the in-process of propagating, the decay of increase sound.
Furthermore, the steel plate, the rubber damping layer and the glass magnesium board restraint layer form a restraint damping structure, when sound waves impact the rubber damping layer to enable the rubber damping layer to be subjected to vibration bending, extending or contracting, the glass magnesium board restraint layer prevents the rubber damping layer from extending and contracting, the damping layer generates shear strain and stress, the capacity of the damping layer for converting mechanical energy into internal energy is enhanced, and medium-low frequency noise can be effectively reduced through the structure. Compare in prior art only rely on single noise insulation such as rock wool or glass cotton's noise insulation, this scheme can change the propagation speed of sound, effectively reduces medium and low frequency noise, the decay of great reinforcing sound.
Has the advantages that: compared with the prior art, the utility model has the following advantages:
by adopting the design scheme, compared with the strength of a rock wool board in the prior art, the strength of the glass magnesium board layer is better, and the quality of the sound insulation board is improved.
Noise passes through the punched sound-absorbing plate before passing through the centrifugal glass wool sound-insulating layer, and when sound passes through the punched holes of the punched plate, sound waves generate violent resonance and generate friction with air, so that part of sound energy is converted into internal energy. When sound enters a gap between the punched sound-absorbing plate and the non-woven fabric, after countless times of reflection, some sound is reflected to the inner space of the sound-insulating cover, but the quantity at the moment can be smaller, and some sound is attenuated in the hole cavity and the gap until the sound disappears.
There is axial fan in this scheme septum sound cover top, can effectively discharge the temperature in the septum sound cover outdoor, and there is the muffler axial fan below, can prevent that the noise from revealing through the louvre.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the structure of the acoustical layer of the present invention.
Detailed Description
The utility model is further illustrated below with reference to the figures and examples.
Example 1
As shown in fig. 1 and fig. 2, an assembled sound-insulating cover for a roots blower comprises four upright posts 10 which surround and form a rectangle on the ground and extend along the vertical direction, a side surface of the rectangular sound-insulating cover is formed between two adjacent upright posts 10, wherein the side surfaces of three adjacent rectangular sound-insulating covers are strong sound-insulating surfaces, the rest one side surface adopts a door-type sound-insulating plate, the strong sound-insulating surfaces comprise an air inlet side outer plate 5 which is arranged between two adjacent upright posts 10 and is positioned at the outer side and an air inlet side sound-insulating plate 4 which is arranged at the inner side, the distance between the air inlet side outer plate 5 and the air inlet side sound-insulating plate 4 is 100mm, the bottom of the air inlet side sound-insulating plate 4 is 100mm shorter than the bottom of the air inlet side outer plate 5, a shutter (not shown) is welded on the air inlet side outer plate 5, the door-type sound-insulating plate comprises a door frame 6 which is arranged between two adjacent upright posts, and a sound-insulating door 7 which is connected with the door frame 6 through a hinge, an opening for the air outlet pipeline of the fan to pass through is arranged on any strong sound insulation surface, and an upper sound insulation plate 2 forming a closed cover body is further arranged above the strong sound insulation surface and the door type sound insulation plate.
The upper sound insulation board 2 is provided with a heat dissipation opening 3, and a heat dissipation opening silencer 9, an axial flow fan 8 and a rain cover 1 are arranged in the heat dissipation opening 3 from bottom to top.
All set up the puigging in air inlet side acoustic celotex board 4, the last acoustic celotex board 2, door frame 6 and soundproof door 7.
The soundproof door 7 is a two-leaf opening-closing soundproof door.
The heat dissipation port silencer comprises a centrifugal glass wool sound insulation layer, a non-woven fabric layer and a punching sound absorption plate which are sequentially arranged.
The sound insulation layer comprises a steel plate 11, a rubber damping layer 12, a glass magnesium board restraint layer 13, a centrifugal glass wool sound insulation layer 14, a non-woven fabric layer 15 and a punching sound absorption plate 16 which are sequentially arranged.
The thickness of the steel plate 11 is 2 mm; a rubber damping layer 12 is bonded on the inner side of the steel plate 11, and the thickness of the rubber damping layer 12 is 3 mm; a glass magnesium board restraint layer 13 is bonded on the inner side of the rubber damping layer 12, and the thickness of the glass magnesium board restraint layer 13 is 5 mm; the inner side of the glass magnesium board restraint layer 13 is tightly compacted and placed at 100kg/m3A centrifugal glass wool sound-insulating layer 14, wherein the thickness of the centrifugal glass wool sound-insulating layer 14 is 69.5 mm; the outer side of the centrifugal glass wool sound insulation layer 14 is wrapped with non-woven fabrics; the outer side of the non-woven fabric is fixed by a punched sound-absorbing plate 16, and the thickness of the punched sound-absorbing plate 16 is 0.5 mm.
The steel plate 11 and the rubber damping layer 12, and the rubber damping layer 12 and the glass magnesium board restraint layer 13 are bonded by glue.
When this scheme of adoption, sound reaches the sound-proof housing outside from the sound-proof housing inboard and need pass the air bed, punch a hole abatvoix 16, non-woven fabrics layer 15, cotton puigging 14 of centrifugal glass, glass magnesium board restraint layer 13, rubber damping layer 12 and steel sheet 11, above various materials are because of the density difference, and the speed that sound propagated in the material of difference is different, is equivalent to sound meets different hindrance at the in-process of propagating, increases the decay of sound.
Further, the steel plate 11, the rubber damping layer 12 and the glass magnesium board restraint layer 13 form a restraint damping structure, when sound waves impact the rubber damping layer 12 to enable the rubber damping layer 12 to be subjected to vibration, bent, extended or contracted, the glass magnesium board restraint layer 13 prevents the rubber damping layer from being extended or contracted, the damping layer generates shear strain and stress, the capacity of the damping layer for converting mechanical energy into internal energy is enhanced, and medium and low frequency noise can be effectively reduced through the structure. Compare in prior art only rely on single noise insulation such as rock wool or glass cotton's noise insulation, this scheme can change the propagation speed of sound, effectively reduces medium and low frequency noise, the decay of great reinforcing sound.
The sound insulation volume of the Roots blower sound insulation cover of the embodiment can reach 30dB through verification, and compared with 15dB in the prior art, the sound insulation volume of the Roots blower sound insulation cover of the embodiment is 2 times that of the prior art, and the sound insulation requirements of production environments of enterprises and surrounding residents of the enterprises can be met.
The axial fan 8 at the top in this scheme enables the inside and outside difference in temperature of sound proof cover to keep within 4 ℃, compares 10 ℃ among the prior art, and the temperature rise is 0.4 times of prior art, enables the equipment in the sound proof cover to operate at more reasonable temperature all the time.
The steel sheet 11, the rubber damping layer 12, glass magnesium board restraint layer 13, the cotton puigging 14 of centrifugal glass, the abatvoix 16 that punches a hole of roots's fan sound-proof housing in this scheme all have non-flammable characteristic for high-efficient roots's fan sound-proof housing in this embodiment still possesses fire behavior.
Claims (7)
1. The utility model provides a roots is assembled sound proof cover for fan which characterized in that: comprises four upright posts which surround the ground to form a rectangle and extend along the vertical direction, a side surface of a rectangular sound insulation cover is formed between two adjacent upright posts, wherein, the side surfaces of three adjacent rectangular sound insulation covers are strong sound insulation surfaces, the rest one side surface adopts a door type sound insulation plate, the strong sound insulation surface comprises an air inlet side outer plate and an air inlet side sound insulation plate, wherein the air inlet side outer plate is arranged between two adjacent upright posts and is positioned on the outer side, the air inlet side sound insulation plate is positioned on the inner side, the distance between the air inlet side outer plate and the air inlet side sound insulation plate is 100mm, the bottom of the air inlet side sound insulation plate is 100mm shorter than the bottom of the air inlet side outer plate, a shutter is welded on the air inlet side outer plate, the door type sound insulation plate comprises a door frame arranged between two adjacent upright posts, with the soundproof door of being connected through the hinge and door frame, arbitrary strong sound insulation face sets up the opening that supplies fan air outlet pipeline to pass through, and strong sound insulation face and gate-type acoustic celotex board top still are equipped with the last acoustic celotex board of constituteing the enclosure body.
2. The assembled acoustic shield for a roots blower according to claim 1, wherein: the upper sound insulation plate is provided with a heat dissipation port, and a heat dissipation port silencer, an axial flow fan and a rainproof cover are arranged in the heat dissipation port from bottom to top.
3. The assembled acoustic shield for a roots blower according to claim 1, wherein: all set up the puigging in air inlet side acoustic celotex board, last acoustic celotex board, door frame and the soundproof door.
4. The assembled acoustic shield for a roots blower according to claim 1, wherein: the soundproof door is two open-close type soundproof doors.
5. The assembled acoustic shield for a roots blower according to claim 2, wherein: the heat dissipation port silencer comprises a centrifugal glass wool sound insulation layer, a non-woven fabric layer and a punching sound absorption plate which are sequentially arranged.
6. The assembled acoustic shield for a roots blower according to claim 3, wherein: the puigging is including the steel sheet, the rubber damping layer, glass magnesium board restraint layer, the cotton puigging of centrifugal glass, non-woven fabrics layer and the abatvoix that punches a hole that set gradually.
7. The assembled acoustic shield for a roots blower according to claim 6, wherein: the steel plate and the rubber damping layer, and the rubber damping layer and the glass magnesium board restraint layer are bonded by glue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122570438.1U CN215949819U (en) | 2021-10-25 | 2021-10-25 | Assembled sound insulation cover for Roots blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122570438.1U CN215949819U (en) | 2021-10-25 | 2021-10-25 | Assembled sound insulation cover for Roots blower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215949819U true CN215949819U (en) | 2022-03-04 |
Family
ID=80410845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122570438.1U Active CN215949819U (en) | 2021-10-25 | 2021-10-25 | Assembled sound insulation cover for Roots blower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215949819U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118375225A (en) * | 2024-05-20 | 2024-07-23 | 天津大学 | A split assembleable sound insulation cover |
-
2021
- 2021-10-25 CN CN202122570438.1U patent/CN215949819U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118375225A (en) * | 2024-05-20 | 2024-07-23 | 天津大学 | A split assembleable sound insulation cover |
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