CN211397904U - Roots blower noise reduction device - Google Patents
Roots blower noise reduction device Download PDFInfo
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- CN211397904U CN211397904U CN201922438394.XU CN201922438394U CN211397904U CN 211397904 U CN211397904 U CN 211397904U CN 201922438394 U CN201922438394 U CN 201922438394U CN 211397904 U CN211397904 U CN 211397904U
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Abstract
The utility model discloses a Roots blower noise reduction device belongs to the technical field of blower noise reduction accessories; the technical problem to be solved is as follows: the noise reduction device of the Roots blower is good in noise reduction effect, simple in structure and low in modification cost; the technical scheme is as follows: the air inlet pipe and the exhaust pipe are arranged on two opposite side walls of the sealed box body respectively, the interior of the box body is divided into a first cavity through the first partition plate and the second partition plate, the second cavity and a third cavity, the air inlet pipe is communicated with the first cavity, the exhaust pipe is communicated with the third cavity, four side walls of the box body, which are not provided with the air inlet pipe and the exhaust pipe, are of an interlayer structure filled with glass silk floss, and the inner walls of the four side walls are perforated plates, fine honeycomb holes are formed in the first partition plate and the second partition plate, a first ventilation barrel is connected to the upper portions of the first partition plate and the second partition plate, a plurality of first ventilation holes are formed in the barrel wall of the first ventilation barrel, a second ventilation barrel is connected between the lower portion of the second partition plate and the.
Description
Technical Field
The utility model discloses roots's fan falls device of making an uproar belongs to the technical field of air-blower amortization accessory.
Background
The Roots blower belongs to a positive displacement blower, and the end faces of an impeller and front and rear end covers of the blower. The principle is a rotary compressor which compresses and conveys gas by utilizing the relative motion of two blade-shaped rotors in a cylinder. The blower has simple structure and convenient manufacture, is widely applied to aquaculture oxygenation, sewage treatment aeration and cement conveying, is more suitable for a gas conveying and pressurizing system in a low-pressure occasion, and can also be used as a vacuum pump and the like.
The noise of the Roots blower comprises mechanical noise and pneumatic noise, the air volume of the Roots blower sucked and discharged each time is large, and a sudden change phenomenon exists, and the larger the air volume is, the higher the pressure is, the faster the rotating speed is, so that the noise is larger. In the operation process of a single Roots blower, the noise value is as high as 85-110dB, and when a plurality of Roots blowers work simultaneously, the noise value superposition becomes larger. When the roots blower is used in industrial production in the prior art, a noise reduction measure that the whole blower is subjected to sound insulation treatment by using a sound insulation cover or is wrapped by using a sound insulation material at an inlet and outlet pipeline of the roots blower with large noise and wide radiation range is adopted, so that the actual emission of noise of a plurality of industrial enterprises cannot reach the standard of environmental noise emission of industrial enterprise factories.
SUMMERY OF THE UTILITY MODEL
The utility model overcomes the deficiencies in the prior art, the technical problem who solves is: the noise reduction device of the Roots blower is good in noise reduction effect, simple in structure and low in modification cost.
In order to solve the technical problem, the utility model discloses a technical scheme be: the noise reduction device of the Roots blower comprises a sealed box body, wherein an air inlet pipe and an exhaust pipe are respectively arranged on two opposite side walls of the box body, the interior of the box body is divided into a first cavity, a second cavity and a third cavity by a first partition plate and a second partition plate, the air inlet pipe is communicated with the first cavity and is arranged opposite to the first partition plate, the exhaust pipe is communicated with the third cavity and is arranged opposite to the second partition plate, the four side walls of the box body, which are not provided with the air inlet pipe and the exhaust pipe, are of a sandwich structure filled with glass silk floss inside, the inner walls of the four side walls are perforated plates, fine honeycomb holes are respectively arranged on the first partition plate and the second partition plate, a first vent cylinder is connected to the upper parts of the first partition plate and the second partition plate, the first vent cylinder penetrates through the second cavity and is communicated with the first cavity and the third cavity, and a first closing plate is arranged inside, the first ventilation barrel is characterized in that a plurality of first ventilation holes are formed in the barrel wall of the first ventilation barrel and the first sealing plate, a second ventilation barrel is connected between the lower portion of the second partition plate and the exhaust pipe, the second ventilation barrel penetrates through the third cavity and is communicated with the second cavity and the exhaust pipe, a second sealing plate is arranged in one end, located in the second cavity, of the second ventilation barrel, and a plurality of second ventilation holes are formed in the barrel wall of the second ventilation barrel and the second sealing plate.
The first cavity is internally provided with at least one first flow guide sound absorption plate, the first flow guide sound absorption plate is a folded plate with two ends fixed on the inner wall of the box body, the included angle of the folded plate is 120-160 degrees, one end of the first flow guide sound absorption plate corresponds to the outlet of the air inlet pipe, the other end of the first flow guide sound absorption plate corresponds to the inlet of the first air vent, the first flow guide sound absorption plate is of a double-plate sandwich structure, glass wool is filled in the sandwich layer, one side, close to the air inlet pipe, of the first flow guide sound absorption plate is a perforated plate, and the other side of the first.
And at least one second diversion silencing plate is arranged in the third chamber, two ends of the second diversion silencing plate are fixed on folded plates on the inner wall of the box body, the included angle of the folded plates is 120-160 degrees, one end of the second diversion silencing plate corresponds to the outlet of the first ventilating cylinder, the other end of the second diversion silencing plate corresponds to the cylinder wall of the second ventilating cylinder, the second diversion silencing plate is of a double-plate sandwich structure, glass wool is filled in a sandwich layer, a perforated plate is arranged on one side, close to the outlet of the first ventilating cylinder, of the second diversion silencing plate, and a smooth steel plate is arranged on the other side of the second diversion silencing plate.
The utility model discloses a glass wool silencing device, including first chamber, second chamber, third chamber, the top of third chamber is provided with the amortization arc board, the both ends of amortization arc board are fixed on the box and its both sides limit is located the both sides of third chamber respectively, the amortization arc board is double plate sandwich structure and intermediate layer intussuseption and is equipped with glass silk floss, the both sides board of amortization arc board is the perforated plate, all install the amortization cotton on the both sides face of third chamber.
Compared with the prior art, the utility model following beneficial effect has: the utility model discloses a three cavity inflation chamber amortization structures have improved low, well, high frequency noise cancelling effect, and the drainage of recombination water conservancy diversion acoustical panel has avoided the noise to penetrate directly to guided the flow direction of wind, the windage reduces and inside wind flows more steady, the production possibility of noise reduction, simple structure, the transformation is with low costs.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings;
fig. 1 is a schematic structural view of the present invention;
in the figure: the air-conditioning box comprises a box body 1, a first partition plate 2, a second partition plate 3, a first chamber 4, a second chamber 5, a third chamber 6, an air inlet pipe 7, an exhaust pipe 8, a first ventilation cylinder 9, a second ventilation cylinder 10, a first flow-guide sound-absorbing plate 11, a second flow-guide sound-absorbing plate 12, a third partition plate 13 and a sound-absorbing arc plate 14.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention; based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in figure 1, the noise reduction device of the Roots blower of the utility model comprises a sealed box body 1, an air inlet pipe 7 and an air outlet pipe 8 are respectively arranged on two opposite side walls of the box body 1, the interior of the box body 1 is divided into a first chamber 4, a second chamber 5 and a third chamber 6 by a first clapboard 2 and a second clapboard 3, the air inlet pipe 7 is communicated with the first chamber 4 and is arranged opposite to the first clapboard 2, the air outlet pipe 8 is communicated with the third chamber and is arranged opposite to the second clapboard 3, four side walls of the box body 1, which are not provided with the air inlet pipe 7 and the air outlet pipe 8, are of a sandwich structure filled with glass wool cotton inside, the inner walls of the sandwich structure are perforated plates, fine holes are respectively arranged on the first clapboard 2 and the second clapboard 3, a first vent cylinder 9 is connected with the upper parts of the first clapboard 2 and the second clapboard 3, the first vent cylinder 9 penetrates through the second chamber 5 and is communicated with the first chamber 4 and the third chamber 6, the first ventilation cylinder 9 is provided with a first sealing plate inside one end located in the first cavity 4, a plurality of first vent holes are formed in the cylinder wall of the first ventilation cylinder 9 and the first sealing plate, a second ventilation cylinder 10 is connected between the lower portion of the second partition plate 3 and the exhaust pipe 8, the second ventilation cylinder 10 penetrates through the third cavity 6 and is communicated with the second cavity 5 and the exhaust pipe 8, a second sealing plate is arranged inside one end located in the second cavity 5 of the second ventilation cylinder 10, and a plurality of second vent holes are formed in the cylinder wall of the second ventilation cylinder 10 and the second sealing plate.
At least one first diversion sound-absorbing plate 11 is installed in the first chamber 4, the first diversion sound-absorbing plate 11 is a folded plate with two ends fixed on the inner wall of the box body 1, the included angle of the folded plate is 120-160 degrees, one end of the first diversion sound-absorbing plate 11 corresponds to the outlet of the air inlet pipe 7, the other end of the first diversion sound-absorbing plate corresponds to the inlet of the first air cylinder 9, the first diversion sound-absorbing plate 11 is of a double-plate sandwich structure, glass wool is filled in the sandwich layer, one side, close to the air inlet pipe 7, of the first diversion sound-absorbing plate 11 is a perforated plate, the other side of the first diversion sound-absorbing plate is a smooth steel plate, and as shown in fig. 1, two.
At least one second diversion silencing plate 12 is installed in the third chamber 6, two ends of the second diversion silencing plate 12 are fixed on folded plates on the inner wall of the box body 1, the included angle of the folded plates is 120-160 degrees, one end of the second diversion silencing plate 12 corresponds to the outlet of the first ventilation cylinder 9, the other end of the second diversion silencing plate corresponds to the cylinder wall of the second ventilation cylinder 10, the second diversion silencing plate 12 is of a double-plate sandwich structure, glass wool is filled in the sandwich layer, one side, close to the outlet of the first ventilation cylinder 9 of the air inlet pipe, of the second diversion silencing plate 12 is a perforated plate, the other side of the second diversion silencing plate is a smooth steel plate, and as shown in figure 1, two second diversion silencing plates 12 are arranged in the third chamber 6.
The bottom surface center fixed mounting of second cavity 5 has third baffle 13, the top of third baffle 13 is provided with amortization arc 14, the both ends of amortization arc 14 are fixed on box 1 and its both sides limit is located the both sides of third baffle 13 respectively, amortization arc 14 is double plate sandwich structure and intermediate layer intussuseption and is equipped with glass silk floss, the both sides board of amortization arc 14 is the perforated plate, all install the amortization cotton on the both sides face of third baffle 13.
The air outlet of the Roots blower enters the first chamber 4 of the box body 1 from the air inlet pipe 7, as shown in figure 1, most of the inlet air enters between the two first diversion muffling plates 11, the rest of the air flow enters the two triangular areas for buffering expansion and contacts the inner wall of the box body 1 for muffling, the air entering between the two first diversion muffling plates 11 is guided upwards by the smooth steel plate, in the diversion process, the noise is absorbed and muffled by the glass wool at the inclined folded plate position, finally most of the inlet air enters the first ventilating barrel 9, the rest of the inlet air enters the second chamber 5 from the honeycomb holes on the first partition plate 2, most of the inlet air in the first ventilating barrel 9 enters the third chamber 6 from the other end and flows into the second chamber 5 for buffering expansion from the side wall, after the inlet air flowing in from the first partition plate 2 collides with the third partition plate 13 and is muffled by the muffling cotton on the third partition plate, the inlet air flows to the second ventilating barrel 10 from, and the air inlet that flows into third chamber 6 from first breather pipe 9 is then guided by second water conservancy diversion abatvoix 12 to the lateral wall of second breather pipe 10 and gets into second breather pipe 10, and the wind current noise is eliminated by glass silk floss again in the guide process, and the wind current that finally flows out from outlet duct 8 is comparatively gentle and the noise is minimum, the utility model discloses simple structure reforms transform with low costs, and after using longer time, can demolish the change to glass silk floss.
In the air current switching-over process, the impurity that the air inlet carried can drop to the bottom half because of the collision, and because the air current expansion buffering effect of three cavity, the possibility that impurity in the box was rolled up and continues to take away is lower, consequently carries out impurity removal to box inside at every interval a period, but the utility model discloses possess certain edulcoration effect.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (4)
1. Device of making an uproar falls in roots's fan, its characterized in that: the device comprises a sealed box body (1), wherein an air inlet pipe (7) and an exhaust pipe (8) are respectively arranged on two opposite side walls of the box body (1), the inside of the box body (1) is divided into a first chamber (4), a second chamber (5) and a third chamber (6) through a first partition plate (2) and a second partition plate (3), the air inlet pipe (7) is communicated with the first chamber (4) and is arranged opposite to the first partition plate (2), the exhaust pipe (8) is communicated with the third chamber and is arranged opposite to the second partition plate (3), four side walls of the box body (1) which are not provided with the air inlet pipe (7) and the exhaust pipe (8) are of an interlayer structure filled with glass silk floss inside, inner walls of the four side walls are perforated plates, fine honeycomb holes are respectively arranged on the first partition plate (2) and the second partition plate (3), a first ventilation cylinder (9) is connected to the upper parts of the first partition plate (2) and the second partition plate (3), the first ventilation cylinder (9) penetrates through the second cavity (5) and is communicated with the first cavity (4) and the third cavity (6), a first sealing plate is arranged inside one end, located in the first cavity (4), of the first ventilation cylinder (9), a plurality of first air vents are formed in the cylinder wall of the first ventilation cylinder (9) and the first sealing plate, a second ventilation cylinder (10) is connected between the lower portion of the second partition plate (3) and the exhaust pipe (8), the second ventilation cylinder (10) penetrates through the third cavity (6) and is communicated with the second cavity (5) and the exhaust pipe (8), a second sealing plate is arranged inside one end, located in the second cavity (5), of the second ventilation cylinder (10), and a plurality of second air vents are formed in the cylinder wall of the second ventilation cylinder (10) and the second sealing plate.
2. The roots blower noise reduction device of claim 1, wherein: the air inlet pipe structure is characterized in that at least one first flow guide sound absorption plate (11) is installed in the first chamber (4), the first flow guide sound absorption plate (11) is a folded plate with two ends fixed to the inner wall of the box body (1), the included angle of the folded plate is 120-160 degrees, one end of the first flow guide sound absorption plate (11) corresponds to the outlet of the air inlet pipe (7) and the other end of the first flow guide sound absorption plate corresponds to the inlet of the first air vent cylinder (9), the first flow guide sound absorption plate (11) is of a double-plate sandwich structure, glass wool is filled in the sandwich layer, a perforated plate is arranged on one side, close to the air inlet pipe (7), of the first flow guide sound absorption plate (11).
3. The roots blower noise reduction device of claim 1, wherein: the air inlet pipe is characterized in that at least one second flow guide sound-absorbing plate (12) is installed in the third chamber (6), two ends of the second flow guide sound-absorbing plate (12) are fixed to folded plates on the inner wall of the box body (1), the included angle of the folded plates is 120-160 degrees, one end of the second flow guide sound-absorbing plate (12) corresponds to an outlet of the first air vent cylinder (9) and the other end of the second flow guide sound-absorbing plate corresponds to the cylinder wall of the second air vent cylinder (10), the second flow guide sound-absorbing plate (12) is of a double-plate sandwich structure, glass wool is filled in the sandwich layer, one side, close to the outlet of the first air vent cylinder (9) of the air inlet pipe, of the second flow guide sound-absorbing.
4. The roots blower noise reduction device according to any one of claims 1-3, wherein: the utility model discloses a glass fiber reinforced plastic composite material silencing device, including second chamber (5), the bottom surface center fixed mounting of second chamber (5) has third baffle (13), the top of third baffle (13) is provided with amortization arc board (14), the both ends of amortization arc board (14) are fixed on box (1) and its both sides limit is located the both sides of third baffle (13) respectively, amortization arc board (14) are the double plate sandwich structure and the intermediate layer intussuseption glass silk floss is equipped with, the both sides board of amortization arc board (14) is the perforated plate, all install the amortization cotton on the both sides face of third baffle (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922438394.XU CN211397904U (en) | 2019-12-30 | 2019-12-30 | Roots blower noise reduction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922438394.XU CN211397904U (en) | 2019-12-30 | 2019-12-30 | Roots blower noise reduction device |
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| Publication Number | Publication Date |
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| CN211397904U true CN211397904U (en) | 2020-09-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922438394.XU Active CN211397904U (en) | 2019-12-30 | 2019-12-30 | Roots blower noise reduction device |
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| CN (1) | CN211397904U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112833033A (en) * | 2021-01-06 | 2021-05-25 | 苏州保邦电气有限公司 | Silencer of air blower |
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2019
- 2019-12-30 CN CN201922438394.XU patent/CN211397904U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112833033A (en) * | 2021-01-06 | 2021-05-25 | 苏州保邦电气有限公司 | Silencer of air blower |
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