CN111946670A - T-shaped resistance micropore multi-combination exhaust silencer - Google Patents
T-shaped resistance micropore multi-combination exhaust silencer Download PDFInfo
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- CN111946670A CN111946670A CN202010800228.4A CN202010800228A CN111946670A CN 111946670 A CN111946670 A CN 111946670A CN 202010800228 A CN202010800228 A CN 202010800228A CN 111946670 A CN111946670 A CN 111946670A
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- metal
- flow guide
- shaped
- bullet
- exhaust silencer
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/663—Sound attenuation
- F04D29/664—Sound attenuation by means of sound absorbing material
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/663—Sound attenuation
- F04D29/665—Sound attenuation by means of resonance chambers or interference
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/667—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by influencing the flow pattern, e.g. suppression of turbulence
Abstract
The invention discloses a T-shaped anti-micropore multi-combination exhaust silencer, which comprises a metal frame, wherein the surface of the metal frame is wrapped by a stainless steel skin, the metal frame is integrally T-shaped, the tail end of the T-shaped skin is an air inlet, the left end and the right end of the T-shaped skin are air outlets, and a resonance box covers each side wall and the top surface in the stainless steel skin to form a tight box wall and form a second sealing layer; in the device, a metal flow guide wedge is arranged opposite to the air inlet, a slide rail and a bullet flow guide column are respectively arranged on the left side and the right side of the metal flow guide wedge, and the bullet flow guide column is arranged on the slide rail and can slide along the slide rail; the resonance box, the metal diversion wedges and the bullet diversion columns are filled with sound absorption materials, and holes are formed in the surfaces of the sound absorption materials. The device of the invention adopts an expansion type resistance noise reduction principle, can rapidly expand the wind entering device by more than 10 times in the channel space thereof, rapidly reduce the wind speed, simultaneously refract sound waves along a 90-degree elbow, consume sound energy and reduce the noise by more than 45 dB.
Description
Technical Field
The invention belongs to the technical field of silencing equipment, and relates to a T-shaped anti-micropore multi-combination exhaust silencing device.
Background
Grain is stored in a granary, because the grain contains a certain amount of moisture, a mechanical ventilation cooling mode is usually adopted to prevent the grain from mildewing and rotting, and an axial flow fan is a safe, efficient and energy-saving mode which is usually adopted. The normal running sound of the axial flow fan is 70-80 decibels, and if the fan runs for a long time, the running sound of the axial flow fan reaches 120 decibels. Because the geographical position of granary mostly closes on resident's residential area, axial fan's operation can disturb resident's normal life on every side, and especially when many fans of night move together, it is more serious.
Therefore, a device capable of solving the problem is urgently needed, and currently, the common related noise reduction and silencing devices in the society all adopt materials with high porosity of centrifugal glass wool, but the materials can generate flocculation phenomenon when being blown by air flow of a fan all the year round, and have large influence on the surrounding environment.
Disclosure of Invention
The invention aims to solve the technical problems and provide the technical task of perfecting and improving the prior technical scheme and providing a T-shaped anti-micropore multi-combination exhaust silencer so as to achieve the aim of simultaneously exhausting and silencing. Therefore, the invention adopts the following technical scheme:
a T-shaped anti-micropore multi-combination exhaust silencer comprises a metal frame, wherein the surface of the metal frame is wrapped by a stainless steel skin to form a first closed layer, the whole metal frame is T-shaped, the tail end of the T-shaped frame is an air inlet, the left end and the right end of the T-shaped frame are air outlets, the air inlet is flexibly connected with a fan port when the T-shaped frame is used, the left end and the right end of the T-shaped frame are used for exhausting air, the T-shaped frame is equal to two elbow structures, and; each side wall and the top surface in the stainless steel covering are covered with a resonance box to form a tight box wall, and a second closed layer is formed; in the device, a metal flow guide wedge is arranged opposite to the air inlet, a slide rail and a bullet flow guide column are respectively arranged on the left side and the right side of the metal flow guide wedge, and the bullet flow guide column is arranged on the slide rail and can slide along the slide rail; the resonance box, the metal diversion wedges and the bullet diversion columns are filled with sound absorption materials, and holes are formed in the surfaces of the sound absorption materials.
Further, the vertex angle of the metal flow guide wedge is preferably 30 degrees +/-1 degree;
the root of the metal diversion wedge is provided with a radian, and can be adjusted by 15mm from left to right.
Micropores with the diameter of 0.5 mm-1 mm are uniformly distributed on the surface of the metal diversion wedge, and are arranged in a staggered mode, and the distance between every two micropores is 1 mm-2 mm.
The surface of the resonance box is distributed with small holes with the diameter of 3mm, and the distance between the small holes is 5 mm-6 mm.
The bullet flow guide column is in a column shape, and the cross section of the windward side of the bullet flow guide column is in a semi-elliptical shape and is similar to a bullet. In addition, a graduated scale can be arranged on the slide rail so as to facilitate the accurate adjustment of the bullet flow guide column;
the wind-facing surface of the bullet flow guide column is uniformly provided with micropores with the diameter of 0.5-1 mm, and the micropores are arranged in a staggered mode and have the distance of 1-2 mm.
The inner wall of the device is also provided with a plurality of arc-shaped louver boards which are symmetrically distributed on two sides of the metal diversion wedge, the outer arc surfaces face the air outlets on the corresponding sides, and the arc-shaped louver boards can effectively prevent airflow from generating turbulence and secondary noise at four corners of the device;
the air outlet is provided with an arc-shaped shutter which can prevent rainwater and foreign matters from entering the device and has the function of damping sound;
the sound-absorbing material is modified bamboo aggregate particles, and the modification process comprises the following steps: boiling the cut moso bamboo, washing with water, soaking in sodium alginate solution, soaking in calcium chloride solution, and oven drying.
The bottom surface of the metal frame can be provided with a glass fiber reinforced plastic grid.
The invention has the beneficial effects that:
this technical scheme uses the T type device that is equal to two elbow structures, adopt the resistance amortization principle of expanding, pass through air intake admission device as wind, air flow channel expands more than 10 times rapidly, make the wind speed descend rapidly, simultaneously through the effect of metal water conservancy diversion wedge and bullet nose water conservancy diversion post, make the sound wave refract along 90 elbows, consume the sound wave energy, simultaneously, the resonance box of filling modified bamboo bone material granule, bullet nose water conservancy diversion post and the sharp sound absorption layer of metal water conservancy diversion play a role, make the sound wave energy turn into heat energy, under the combined action of metal water conservancy diversion wedge, bullet nose water conservancy diversion post, circular arc shutter plate etc., under the circumstances of guaranteeing the effect of airing exhaust, make the noise reduction effect reach the biggest, can fall more than 45dB of making an uproar.
Drawings
FIG. 1 is a top view of the present invention;
FIG. 2 is a side view of the present invention;
fig. 3 is a diagram of a bullet flow guide post of the present invention;
in the figure: the device comprises a metal frame 1, a circular arc louver 2, an air inlet 3, an air outlet 4, a resonance box 5, a slide rail 6, a metal diversion wedge 7, a bullet diversion column 8, a glass fiber reinforced plastic grid 9, a circular arc louver board 10, a stainless steel skin 11 and a fixed seat 12.
Detailed Description
The technical scheme of the invention is further explained in detail by combining the drawings in the specification.
As shown in fig. 1 and 2: the invention relates to a T-shaped resistance micropore multi-combination exhaust silencer, which comprises a metal frame 1, wherein the strength and the rigidity of the device can be ensured by adopting the stable structure of the metal frame; the stainless steel skin 11 tightly wraps the gap with the inlet structural adhesive to form a first sealing layer on the surface of the metal frame, so that the wind and rain preventing functions are enhanced while the strength, the brightness and the service life of the device are enhanced; the whole exhaust silencer is in a T shape, the tail end of the T shape is an air inlet 3, the left end and the right end of the T shape are air outlets 4, when the exhaust silencer is used, the air inlet 1 is flexibly connected with a fan opening (namely, the air inlet corresponds to the fan opening, and the air inlet can be adjusted by using a self-adhesive sponge sealing strip or a bolt to ensure that an interface is sealed and does not leak air), the left end and the right end of the exhaust silencer are used for exhausting air, the exhaust silencer is equal to two elbow structures, and the air; the air outlet 4 can be provided with the arc-shaped shutter 2, so that the device can prevent rainwater and foreign matters from entering, has the function of damping sound, can avoid secondary noise caused by direct collision of airflow, can change the airflow flowing direction to be downward, is convenient for later maintenance due to detachability, and can be used for maintaining a fan and equipment by allowing maintenance personnel to enter the equipment through the window of the air outlet, thereby avoiding frequent moving of the device;
the resonance box 5 covers each side wall and the top surface in the stainless steel skin 11 to form a tight box wall, and an inlet structural adhesive can be used for tightly embedding and blocking gaps to form a second sealing layer so as to enhance the sound insulation capability of the device;
in the device, the opposite surface of the air inlet 4 is provided with the metal diversion wedges 7, the metal diversion wedges 7 are required to be positioned on the central line of the fan, the vertex angle is preferably 30 degrees +/-1 degrees, the root part has a certain radian, the air diversion effect is ensured, meanwhile, the air flow hedging is reduced, and the generation of secondary noise is avoided; and the air flow can be accurately adjusted by 15mm from left to right during installation so as to enable the air flow to uniformly flow through the air outlets on two sides;
the left side and the right side of the metal diversion wedge 7 are respectively provided with a slide rail 6 and a bullet diversion column 8, and the bullet diversion column 8 is arranged on the slide rail 6 and can slide along the slide rail; the left bullet flow guide column and the right bullet flow guide column can be arranged in a mirror image mode, the effect of the bullet flow guide columns on uniform flow guide of air flow is guaranteed, the slide rail can be further provided with a graduated scale, the positions of the two flow guide columns can be determined according to the condition of the air flow, and the flow guide and sound absorption effects are enhanced;
sound-absorbing materials are filled in the resonance box, the metal diversion wedges and the bullet diversion columns, and can be modified bamboo aggregate particles (obtained by chopping and boiling moso bamboos, soaking in a sodium alginate solution, soaking in a calcium chloride solution and drying), and through a large number of research and detection, the sound-absorbing performance of the sound-absorbing materials is superior to that of wood aggregate imported from France and is more superior to that of the sound-absorbing materials of traditional polyurethane sponge; in addition, the surfaces of the resonance box, the metal diversion wedges and the bullet diversion column are provided with holes, wherein the holes densely distributed on the surfaces of the metal diversion wedges and the bullet diversion column meet the condition that the perforation rate on each part is 1% -3%, and the holes densely distributed on the surface of the resonance box meet the condition that the perforation rate on each part is 18% -20%, so that the inherent frequency of the resonance box is consistent with the disturbance frequency of the fan, and the resonance sound absorption effect is triggered. Preferably, micropores with the diameter of 0.5-1 mm are uniformly distributed on the surface of the metal diversion wedge, and are arranged in a staggered mode, and the distance between every two micropores is 1-2 mm; small holes with the diameter of 3mm are distributed on the surface of the resonance box, and the distance between the small holes is 5 mm-6 mm; micropores with the diameter of 0.5 mm-1 mm are uniformly distributed on the windward side of the bullet flow guide column, and are arranged in a staggered mode, and the distance between every two micropores is 1 mm-2 mm. A partition plate can be arranged in the resonance box 5, so that the reduction of noise reduction capability caused by bamboo aggregate deposition is avoided; the bamboo aggregate particles in the resonance box 5, the bullet flow guide column 8 and the metal flow guide wedges 7 can be externally provided with a breathable filtering cloth bag, so that the influence of external foreign matters such as dust is reduced;
the inner wall of the device can be further provided with a plurality of arc-shaped louver boards which are symmetrically distributed on two sides of the metal flow guide wedge, the outer arc surfaces face the air outlets on the corresponding sides, the arc-shaped louver boards can be arranged to increase the damping effect of airflow and sound transmission, and turbulent flow and secondary noise of the airflow at four corners of the device are effectively avoided;
the device can also be provided with a fixed seat 12, and the device can be fixed on the ground by using an expansion screw, so that the later maintenance and disassembly are convenient; in addition, a fork hole for a forklift can be further arranged, so that the transportation is facilitated. The bottom surface of the metal frame 1 can be directly provided with a glass fiber reinforced plastic grating 9 which has a damping effect and can be used as a maintenance channel.
The T-shaped anti-micropore multi-combination exhaust silencer shown in fig. 1-3 is a specific example of the present invention, already embodies the substantive features and advances of the present invention, and can be modified equivalently in shape, structure and the like according to the practical use requirements and under the teaching of the present invention, and is within the protection scope of the present invention.
Claims (10)
1. The utility model provides a T type hinders anti micropore multiunit silencing device that airs exhaust which characterized in that: the device comprises a metal frame, the surface of the metal frame is wrapped by a stainless steel skin, the metal frame is integrally T-shaped, the tail end of the T-shaped is an air inlet, the left end and the right end of the metal frame are air outlets, a resonance box covers each side wall and the top surface in the stainless steel skin, a metal flow guide wedge is arranged opposite to the air inlet in the device, a slide rail and a bullet flow guide column are arranged on each of the left side and the right side of the metal flow guide wedge, and the bullet flow guide column is arranged on the slide rail and can slide along the slide rail; the resonance box, the metal diversion wedges and the bullet diversion columns are filled with sound absorption materials, and holes are formed in the surfaces of the sound absorption materials.
2. The T-shaped anti-microporous multi-combination exhaust silencer according to claim 1, wherein the apex angle of the metal diversion wedges is 30 ° ± 1 °.
3. The T-shaped anti-microporous multi-combination exhaust silencer according to claim 1, wherein the root of the metal diversion wedge has a radian, and the radian can be adjusted by 15 mm.
4. The T-shaped anti-microporous multi-combination exhaust silencer according to claim 1, wherein micropores with a diameter of 0.5mm to 1mm are uniformly distributed on the surface of the metal diversion wedges, and are arranged in a staggered manner with a pitch of 1mm to 2 mm.
5. The T-shaped anti-microporous multi-combination exhaust silencer according to claim 1, wherein the small holes with a diameter of 3mm are distributed on the surface of the resonance box, and the distance between the small holes is 5mm to 6 mm.
6. The T-shaped anti-microporous multi-combination exhaust silencer according to claim 1, wherein the bullet flow guiding column is in the shape of a column, and the cross section of the windward side of the bullet flow guiding column is semi-elliptical and similar to a bullet.
7. The T-shaped anti-micropore multi-combination exhaust silencer according to claim 1, wherein micropores with a diameter of 0.5mm to 1mm are uniformly distributed on the windward side of the bullet flow guide column, and are staggered with a distance of 1mm to 2 mm.
8. The T-shaped anti-microporous multi-combination exhaust silencer according to claim 1, wherein the inner wall of the device is further provided with a plurality of arc-shaped louvers which are symmetrically distributed on both sides of the metal flow guide wedge, and the outer arc faces the exhaust outlet on the corresponding side.
9. The T-shaped anti-microporous multi-combination exhaust silencer according to claim 1, wherein the exhaust outlet is provided with a circular arc-shaped shutter.
10. The T-shaped anti-microporous multi-combination exhaust silencer according to claim 1, wherein the sound-absorbing material is modified bamboo aggregate particles, and the modification process is as follows: boiling the cut moso bamboo, washing with water, soaking in sodium alginate solution, soaking in calcium chloride solution, and oven drying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010800228.4A CN111946670B (en) | 2020-08-11 | 2020-08-11 | T-shaped resistance micropore multi-combination exhaust silencer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010800228.4A CN111946670B (en) | 2020-08-11 | 2020-08-11 | T-shaped resistance micropore multi-combination exhaust silencer |
Publications (2)
| Publication Number | Publication Date |
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| CN111946670A true CN111946670A (en) | 2020-11-17 |
| CN111946670B CN111946670B (en) | 2021-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010800228.4A Active CN111946670B (en) | 2020-08-11 | 2020-08-11 | T-shaped resistance micropore multi-combination exhaust silencer |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2364375Y (en) * | 1998-02-24 | 2000-02-16 | 无锡市一星空调设备厂 | Silencer for hung air conditioner set |
| CN101159133A (en) * | 2006-08-29 | 2008-04-09 | Nec显示器解决方案株式会社 | Noise suppressor, electronic apparatus, and noise suppression characteristic control method |
| CN106968975A (en) * | 2017-05-26 | 2017-07-21 | 广东顺威精密塑料股份有限公司 | A kind of low-noise centrifugal fan |
| US20180073520A1 (en) * | 2016-09-13 | 2018-03-15 | Bosch Mahle Turbo Systems Gmbh & Co. Kg | Charging device |
| CN208073858U (en) * | 2018-02-27 | 2018-11-09 | 江苏新世界泵业有限公司 | A kind of axial-flow pump flow guiding nut |
| CN108895036A (en) * | 2018-08-09 | 2018-11-27 | 常州市泽宸电子有限公司 | Muffler |
-
2020
- 2020-08-11 CN CN202010800228.4A patent/CN111946670B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2364375Y (en) * | 1998-02-24 | 2000-02-16 | 无锡市一星空调设备厂 | Silencer for hung air conditioner set |
| CN101159133A (en) * | 2006-08-29 | 2008-04-09 | Nec显示器解决方案株式会社 | Noise suppressor, electronic apparatus, and noise suppression characteristic control method |
| US20180073520A1 (en) * | 2016-09-13 | 2018-03-15 | Bosch Mahle Turbo Systems Gmbh & Co. Kg | Charging device |
| CN106968975A (en) * | 2017-05-26 | 2017-07-21 | 广东顺威精密塑料股份有限公司 | A kind of low-noise centrifugal fan |
| CN208073858U (en) * | 2018-02-27 | 2018-11-09 | 江苏新世界泵业有限公司 | A kind of axial-flow pump flow guiding nut |
| CN108895036A (en) * | 2018-08-09 | 2018-11-27 | 常州市泽宸电子有限公司 | Muffler |
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| Publication number | Publication date |
|---|---|
| CN111946670B (en) | 2021-03-30 |
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