CN213628189U - Radial annular air inlet and outlet silencer with built-in sleeve structure annular silencer - Google Patents
Radial annular air inlet and outlet silencer with built-in sleeve structure annular silencer Download PDFInfo
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- CN213628189U CN213628189U CN202022833382.XU CN202022833382U CN213628189U CN 213628189 U CN213628189 U CN 213628189U CN 202022833382 U CN202022833382 U CN 202022833382U CN 213628189 U CN213628189 U CN 213628189U
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Abstract
The utility model discloses a radial annular business turn over wind silencer of built-in sleeve structure annular noise elimination body, including radial business turn over wind noise elimination section, sleeve structure annular noise elimination section, reducing pressure boost noise elimination section, radial business turn over wind noise elimination section, sleeve structure annular noise elimination section, reducing pressure boost noise elimination section connect gradually and form the integral structure. The radial air inlet and outlet silencing section, the sleeve structure annular silencing section and the reducing pressurizing silencing section of the utility model are connected into a whole through the bolts and the flanges, and can also be welded into an integrated structure, thereby being capable of adapting to the requirements of different working conditions and transportation conditions and having wide application range; and the noise elimination sections with different structures and different noise elimination mechanisms are combined, the noise elimination effect is obvious, and the noise energy of the air inlet and the air outlet of the fan reaches about 75 decibels.
Description
Technical Field
The utility model relates to a noise eliminator, in particular to radial annular business turn over wind silencer of built-in sleeve structure annular noise elimination body.
Background
The axial flow fan is a general mechanical device widely applied to industrial and mining enterprises, and particularly in a mine ventilation system, the axial flow fan has the advantages of large air quantity, small radial size and the like, and is more generally applied. The axial flow fan can produce great noise in the operation process, and if the use occasion is a closed environment, the noise is not easy to diffuse. The working time of underground production workers in a high-noise environment is long, and the underground production workers have greater harm to the health of the bodies, so that the underground environment has more strict requirements on the noise of the fan, and national relevant departments propose that the noise of the axial flow fan for the mine is lower than 85 decibels. In order to reduce noise, all fan manufacturers are provided with silencers in front of and behind the fans, and the structural types and silencing materials of the silencers are different.
In recent years, most mine users have higher requirements on the noise of the fan under the mine, and the noise is lower than 80 decibels. In order to meet the user's demands, it is necessary to develop a muffler of a new structure.
Disclosure of Invention
In order to solve the technical problem, the utility model provides a simple structure, safe and reliable's radial annular business turn over wind silencer of built-in sleeve structure annular noise elimination body.
The utility model provides a technical scheme of above-mentioned problem is: a radial annular air inlet and outlet silencer with an annular silencer body with a built-in sleeve structure comprises a radial air inlet and outlet silencing section, an annular silencing section with a sleeve structure and a reducing pressurizing silencing section, wherein the radial air inlet and outlet silencing section, the annular silencing section with the sleeve structure and the reducing pressurizing silencing section are sequentially connected to form an integrated structure.
The radial annular air inlet and outlet silencer of the annular silencer with the built-in sleeve structure comprises a front end sealing plate, a straight cylinder body located at the rear part of the front end sealing plate, an arc-shaped guide plate located at the rear part of the straight cylinder body and a connecting framework, wherein the arc-shaped guide plate is a punching plate, a first cavity formed by the front end sealing plate, the straight cylinder body and the arc-shaped guide plate in a surrounding mode is filled with silencing materials, the front end sealing plate, the straight cylinder body, the arc-shaped guide plate and the silencing materials in the first cavity form a flow guide disc silencer, the connecting framework is arranged at the rear part of the flow guide disc silencer, and the connecting framework is connected with the annular silencing.
Above-mentioned radial annular business turn over wind silencer of built-in sleeve structure annular noise elimination body, connect the skeleton and include two annular round steel and a plurality of horizontal round steel, one of them annular round steel is fixed on first flange, and another annular round steel is fixed on convex guide plate, is equipped with a plurality of horizontal round steel that are the annular and distribute between two annular round steel, is in the same place diversion disc noise elimination body and first flange joint.
The rear part of the arc-shaped guide plate is a rectifying spherical surface or is blocked by a first sealing plate.
The radial annular air inlet and outlet silencer of the annular silencer with the built-in sleeve structure is characterized in that the outer sides of the transverse round steel which is distributed annularly are encircled and fixedly welded with the protective net.
The radial annular air inlet and outlet silencer of the annular silencer with the built-in sleeve structure comprises a shell silencer and an inner silencer, wherein the shell silencer consists of a second flange, an outer steel plate cylinder, an inner punching plate cylinder and a silencing material filled in a second cavity enclosed by the outer steel plate cylinder and the inner punching plate cylinder, the front part of the shell silencer is connected with the first flange through the second flange, the rear part of the shell silencer is connected with the reducing pressurizing silencer through a third flange, the inner silencer is formed by sleeving and combining more than two cylindrical silencers with different diameters, all adjacent cylindrical silencers of the inner silencer, the cylindrical silencer on the outermost side of the inner silencer and the shell silencer are connected through first supporting flat steel, and all adjacent cylindrical silencers of the inner silencer, all the cylindrical silencers of the inner silencer, the outer silencer and the inner silencer are connected through first supporting flat steel, An annular air flow channel is formed between the cylindrical sound damper on the outermost side of the inner sound damper and the outer shell sound damper.
The cylindrical silencer comprises an annular spherical end socket, an outer punching plate cylinder, an inner punching plate cylinder and a conical end socket, wherein the inner punching plate cylinder is sleeved in the outer punching plate cylinder, and a third cavity is formed by enclosing the outer punching plate cylinder, the inner punching plate cylinder, the annular spherical end socket and the conical end socket and filled with silencing materials.
The radial annular air inlet and outlet silencer of the annular silencer with the built-in sleeve structure comprises an outer silencing shell and an inner silencing core cylinder, wherein the outer silencing shell and the inner silencing core cylinder are connected into a whole through a plurality of second supporting flat steels arranged in the radial direction, the outer noise elimination shell is composed of a fourth flange, a steel plate conical cylinder on the outer side, a first punching plate conical cylinder on the inner side and a noise elimination material filled in a fourth cavity enclosed by the steel plate conical cylinder and the first punching plate conical cylinder, the inner silencing core cylinder comprises a rectifying cap at the front part, a second punching plate conical cylinder positioned at the rear part of the rectifying cap, and a second sealing plate positioned at the rear part of the second punching plate conical cylinder, a fifth cavity is formed by enclosing the rectifying cap, the second punching plate conical cylinder and the second sealing plate and is filled with silencing materials, and a fourth flange of the reducing pressurizing muffling section is connected with a third flange of the sleeve structure annular muffling section.
According to the radial annular air inlet and outlet silencer of the annular silencing body with the built-in sleeve structure, the outer diameter of the outer silencing shell is gradually reduced from front to back, the outer diameter of the inner silencing core barrel is gradually increased from front to back, an axial annular airflow channel is formed between the outer silencing shell and the inner silencing core barrel, and the area of the annular airflow channel is gradually reduced along the axial airflow direction.
The radial annular air inlet and outlet silencer of the annular silencer with the built-in sleeve structure is characterized in that the radial air inlet and outlet silencing section, the annular silencing section with the sleeve structure and the reducing pressurizing silencing section are connected into a whole through bolts or welded into an integrated structure.
The beneficial effects of the utility model reside in that:
1. the utility model discloses a radial business turn over wind noise elimination section adopts radial annular business turn over wind mode to be equipped with porous structure's convex guide plate, make the noise of propagating along the axial on the one hand, through refraction and reflex action, propagate along radial direction, and absorb and attenuate through the guiding disc noise elimination body, reduce the energy of noise. On the other hand, the radial air inlet and outlet is changed into axial air inlet and outlet through the guide of the arc surface of the flow guide disc silencer.
2. The utility model discloses a coaxial suit of cylinder noise elimination body that sleeve structure annular noise elimination section adopted a plurality of different diameters forms a plurality of ring shape runners, shows the increase with the noise elimination area of air current contact, and the noise can be showing when outwards propagating through ring shape runner and reduce, and the distinguished and admirable process ring shape runner is great because of the runner area, and the air current resistance reduces.
3. The utility model discloses a reducing pressure boost noise elimination section is through the reducing of interior urceolus, and the convergent flow area has certain initial velocity and pressure boost effect in advance when making the air current get into the fan, simultaneously, can conveniently adjust flange hole installation hole site, docks with the fan import flange of different producers.
4. The radial air inlet and outlet silencing section, the sleeve structure annular silencing section and the reducing pressurizing silencing section of the utility model are connected into a whole through the bolts and the flanges, and can also be welded into an integrated structure, thereby being capable of adapting to the requirements of different working conditions and transportation conditions and having wide application range; and the noise elimination sections with different structures and different noise elimination mechanisms are combined, the noise elimination effect is obvious, and the noise energy of the air inlet and the air outlet of the fan reaches about 75 decibels.
Drawings
Fig. 1 is a schematic view of a front structural section of the present invention.
Fig. 2 is a schematic cross-sectional view at a-a of fig. 1.
Fig. 3 is a schematic top view of the external structure of fig. 1.
Fig. 4 is a schematic front sectional structural view of the radial air inlet and outlet muffling section.
Fig. 5 is a schematic cross-sectional view at B-B of fig. 4.
Fig. 6 is a schematic top view of the profile structure of fig. 4.
FIG. 7 is a front cross-sectional structural schematic view of the annular muffling segment of the sleeve structure.
Fig. 8 is a left sectional structural view of fig. 7.
Fig. 9 is a sectional structure schematic view of the inner cylindrical muffler body of fig. 7.
FIG. 10 is a schematic cross-sectional view of the variable diameter supercharging noise elimination section.
Fig. 11 is a schematic view of the structure in the direction a of fig. 9.
Fig. 12 is a schematic view of the structure of fig. 9 in the direction B.
Fig. 13 is a schematic view of the front cross section of the welding integrated structure of the present invention.
Fig. 14 is a schematic front sectional view of the annular muffling segment of the sleeve with a simplified structure according to the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and examples.
As shown in fig. 1-3, a radial annular air inlet and outlet silencer with an annular silencer body with a built-in sleeve structure comprises a radial air inlet and outlet silencing section 1, an annular silencing section with a sleeve structure 2 and a reducing pressurizing silencing section 3, wherein the radial air inlet and outlet silencing section 1, the annular silencing section with a sleeve structure 2 and the reducing pressurizing silencing section 3 are sequentially connected to form an integrated structure. Three silencing sections with different structures and different action effects are manufactured separately and connected into a whole through bolts 4, and supporting legs 5 are arranged below the silencing sections, so that for a small-size fan, a matched silencer is not large, and the supporting legs 5 can be omitted; or may be welded as a unitary structure as shown in fig. 13.
The radial air inlet and outlet silencing section 1 has two main functions: firstly, the noise of axial propagation is changed into radial propagation through the refraction and reflection of the flow guide disc noise elimination body, and meanwhile, a part of energy is absorbed through the flow guide disc noise elimination body, so that the noise is reduced. And secondly, the airflow is transited from the radial direction to the axial direction with less resistance through the guiding of the flow guide disc. As shown in fig. 4-6, the radial air inlet and outlet muffling section 1 includes a front end sealing plate 101, a straight cylinder 102 located at the rear portion of the front end sealing plate 101, an arc-shaped guide plate 107 located at the rear portion of the straight cylinder 102, and a connecting skeleton, where the arc-shaped guide plate 107 is a punching plate, a first cavity enclosed by the front end sealing plate 101, the straight cylinder 102, and the arc-shaped guide plate 107 is filled with muffling materials, the front end sealing plate 101, the straight cylinder 102, the arc-shaped guide plate 107, and the muffling materials in the first cavity form a flow guide disc muffling body, the connecting skeleton is disposed at the rear portion of the flow guide disc muffling body, and the connecting skeleton is connected to the annular muffling. The straight cylinder body 103 is provided with a hanging ring 102, and the form and the installation position of the hanging ring 102 are installed according to the structural requirement.
The connecting framework comprises two annular round steels 106 and a plurality of transverse round steels 105, one annular round steel 106 is fixed on the first flange, the other annular round steel 106 is fixed on the arc-shaped guide plate 107, the plurality of transverse round steels 105 distributed in an annular mode are arranged between the two annular round steels 106, and the guide disc silencing body 107 is connected with the first flange.
The rear part of the arc-shaped guide plate 107 is a rectification spherical surface 108, so that the resistance of air flow can be reduced, the efficiency of the fan is improved, or a first sealing plate is directly adopted for plugging. The protective net 104 is welded around and fixed to the outer side of the transverse round steel 105 which is distributed in a ring shape. The circular arc-shaped guide plate 107 and the rectifying spherical surface 108 are made of punched plates.
As shown in fig. 7-9, the annular muffling segment 2 of the sleeve structure is a main muffling body, and the muffling area is increased by combining a plurality of cylindrical muffling bodies in a sleeve manner, so that the purpose of noise reduction is achieved. The annular silencing section 2 of the sleeve structure comprises a shell silencing body and an inner silencing body, the shell silencing body consists of a second flange, an outer steel plate cylinder 202, an inner punching plate cylinder 203 and silencing materials filled in a second cavity defined by the outer steel plate cylinder 202 and the inner punching plate cylinder 203, the outer steel plate cylinder 202 is provided with a lifting lug 201, the second flange at the front part of the shell silencing body is connected with a first flange of an air inlet section, the rear part of the shell silencing body is connected with the reducing supercharging silencing section 3 through a third flange 204, the inner silencing body is formed by sleeving and combining two cylindrical silencing bodies 206 and 207 with different diameters, the cylindrical silencing body 206 and the cylindrical silencing body 207 are connected through a first supporting flat steel 205, and the cylindrical silencing body 206 and the cylindrical silencing body 207 are connected through a first supporting flat steel 205, An annular air flow passage is formed between the cylindrical muffler body 207 and the housing muffler body.
The cylindrical noise elimination body comprises an annular spherical end socket 20601, an outer side punching plate cylinder 20602, an inner side punching plate cylinder 20603 and a conical surface end socket 20604, the inner side punching plate cylinder 20603 is sleeved in the outer side punching plate cylinder 20602, a third cavity is formed between the outer side punching plate cylinder 20602 and the inner side punching plate cylinder 20603, the front end and the rear end of the third cavity are respectively sealed by the annular spherical end socket 20601 and the conical surface end socket 20604, and noise elimination materials are filled in the third cavity.
In practical applications, the number of cylindrical muffling bodies can be larger. Or a cylindrical silencing body and a solid cylindrical silencing core barrel are sleeved and combined, as shown in fig. 14, the solid cylindrical silencing core barrel consists of an outer punching plate barrel, an inner punching plate barrel and a first sealing plate. A cavity formed by circularly enclosing the outer side punching plate cylinder, the inner side punching plate cylinder and the first sealing plate is filled with a silencing material; or only one annular cylinder. According to the principle, the protection scope of the invention is that the number of the annular cylinders is increased or decreased, or the shape of the annular cylinders is changed into a conical cylinder structure.
The main functions of the reducing pressurizing muffling section 3 are two, and firstly, the annular muffling section with the increased section can be connected with the fan inlet flange through reducing. Secondly, the air flow is increased and the pressure is increased through the change of the cross section of the flow channel, so that the air flow entering the fan has certain initial speed and higher dynamic pressure. As shown in fig. 10 to 12, the reducing supercharging muffling section 3 includes an outer muffling shell and an inner muffling core barrel, the outer muffling shell and the inner muffling core barrel are connected into a whole through a plurality of second supporting flat steels 303 and second supporting flat steels 310 which are arranged in a radial direction, the outer muffling shell is composed of a fourth flange, an outer steel plate conical barrel 304, an inner first punching plate conical barrel 305, and a muffling material filled in a cavity enclosed by the steel plate conical barrel 304 and the first punching plate conical barrel 305, a lifting lug 306 is arranged on the steel plate conical barrel 304, the outer muffling shell is connected with a third flange of the sleeve-structured annular muffling section 2 through the fourth flange 302, and the outer muffling shell is connected with a fan air inlet and an air outlet through a fifth flange 307.
The inner silencing core barrel comprises a rectifying cap 301 at the front part, a second punching plate conical barrel 308 positioned at the rear part of the rectifying cap 301 and a second sealing plate 309 positioned at the rear part of the second punching plate conical barrel 308, wherein the rectifying cap 301, the second punching plate conical barrel 308 and the second sealing plate 309 are enclosed to form a fourth cavity, and silencing materials are filled in the fourth cavity. The rectifying cap 301 is provided to reduce resistance of airflow and improve fan efficiency.
The outer diameter of the outer silencing shell is gradually reduced from front to back, the outer diameter of the inner silencing core cylinder is gradually increased from front to back, an axial annular airflow channel is formed between the outer silencing shell and the inner silencing core cylinder, and the area of the annular airflow channel is gradually reduced along the axial airflow direction.
The radial air inlet and outlet in the above description is defined according to the forced operation of the fan. When the fan works in a drawing mode, the silencer is also applicable, but radial air outlet is defined. Similarly, the reducing supercharging silencing section 3 is also defined by aiming at the function of the forced draught fan and the silencer. When the fan works in a drawing-out mode, the silencer plays the roles of reducing dynamic pressure and increasing static pressure, and plays the effect of pressure diffusion, and the silencer is named as a reducing diffusion silencing section 3.
Claims (10)
1. The utility model provides a radial annular business turn over wind silencer of built-in sleeve structure annular noise damper which characterized in that: the silencer comprises a radial air inlet and outlet silencing section, a sleeve structure annular silencing section and a reducing pressurizing silencing section, wherein the radial air inlet and outlet silencing section, the sleeve structure annular silencing section and the reducing pressurizing silencing section are sequentially connected to form an integrated structure.
2. The radial annular air inlet and outlet silencer of the annular silencer body with the built-in sleeve structure of claim 1, wherein: the radial air inlet and outlet silencing section comprises a front end sealing plate, a straight cylinder body located at the rear part of the front end sealing plate, an arc-shaped guide plate located at the rear part of the straight cylinder body and a connecting framework, wherein the arc-shaped guide plate adopts a punching plate, silencing materials are filled in a first cavity formed by enclosing the front end sealing plate, the straight cylinder body and the arc-shaped guide plate, a flow guide disc silencing body is formed by the front end sealing plate, the straight cylinder body, the arc-shaped guide plate and the silencing materials in the first cavity, the connecting framework is arranged at the rear part of the flow guide disc silencing body, and the connecting framework is connected.
3. The radial annular air inlet and outlet silencer of the annular silencer body with the built-in sleeve structure of claim 2, wherein: the connecting framework comprises two annular round steels and a plurality of transverse round steels, one of the annular round steels is fixed on the first flange, the other annular round steel is fixed on the arc-shaped guide plate, the plurality of transverse round steels distributed in an annular mode are arranged between the two annular round steels, and the guide plate silencer is connected with the first flange.
4. The radial annular air inlet and outlet silencer of the annular silencer body with the built-in sleeve structure of claim 2, wherein: the rear part of the circular arc guide plate is a rectifying spherical surface or is blocked by a first sealing plate.
5. The radial annular air inlet and outlet silencer of the annular silencer body with the built-in sleeve structure of claim 3, wherein: the outer sides of the transverse round steel which is distributed annularly are encircled and fixedly welded with a protective net.
6. The radial annular air inlet and outlet silencer of the annular silencer body with the built-in sleeve structure of claim 2, wherein: the annular silencing section of the sleeve structure comprises a shell silencing body and an inner silencing body, the shell silencing body consists of a second flange, an outer steel plate cylinder, an inner punching plate cylinder and a silencing material filled in a second cavity enclosed by the outer steel plate cylinder and the inner punching plate cylinder, the front part of the shell silencing body is connected with the first flange through the second flange, the rear part of the shell silencing body is connected with the reducing pressurizing silencing section through a third flange, the inner noise damper is formed by sleeving and combining more than two cylindrical noise dampers with different diameters, adjacent cylindrical noise dampers of the inner noise damper and the outermost cylindrical noise damper of the inner noise damper are connected through first supporting flat steel, and annular air flow channels are formed between the adjacent cylindrical noise dampers of the inner noise damper and between the outermost cylindrical noise damper of the inner noise damper and the outer noise damper.
7. The radial annular air inlet and outlet silencer of the annular silencer body with the built-in sleeve structure of claim 6, wherein: the cylindrical noise elimination body comprises an annular spherical end socket, an outer side punching plate cylinder, an inner side punching plate cylinder and a conical surface end socket, the inner side punching plate cylinder is sleeved in the outer side punching plate cylinder, and a third cavity is formed by enclosing the outer side punching plate cylinder, the inner side punching plate cylinder, the annular spherical end socket and the conical surface end socket and filled with noise elimination materials.
8. The radial annular air inlet and outlet silencer of the annular silencer body with the built-in sleeve structure of claim 1, wherein: the reducing and pressurizing silencing section comprises an outer silencing shell and an inner silencing core barrel, the outer silencing shell and the inner silencing core barrel are connected into a whole through a plurality of second supporting flat steels which are arranged in the radial direction, the outer silencing shell is composed of a fourth flange, a steel plate conical barrel on the outer side, a first punching plate conical barrel on the inner side and silencing materials filled in a fourth cavity which is defined by the steel plate conical barrel and the first punching plate conical barrel, the inner silencing core barrel comprises a rectifying cap on the front portion, a second punching plate conical barrel located on the rear portion of the rectifying cap and a second sealing plate located on the rear portion of the second punching plate conical barrel, the rectifying cap, the second punching plate conical barrel and the second sealing plate are defined to form a fifth cavity, the silencing materials are filled in the fifth cavity, and the fourth flange of the reducing and pressurizing silencing section is connected with a third flange of the annular silencing section of the sleeve structure.
9. The radial annular air inlet and outlet silencer of the annular silencer body with the built-in sleeve structure of claim 8, wherein: the outer diameter of the outer silencing shell is gradually reduced from front to back, the outer diameter of the inner silencing core cylinder is gradually increased from front to back, an axial annular airflow channel is formed between the outer silencing shell and the inner silencing core cylinder, and the area of the annular airflow channel is gradually reduced along the axial airflow direction.
10. The radial annular air inlet and outlet silencer of the annular silencer body with the built-in sleeve structure of claim 1, wherein: the radial air inlet and outlet silencing section, the sleeve structure annular silencing section and the reducing pressurizing silencing section are connected into a whole through bolts or welded into an integrated structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022833382.XU CN213628189U (en) | 2020-11-30 | 2020-11-30 | Radial annular air inlet and outlet silencer with built-in sleeve structure annular silencer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022833382.XU CN213628189U (en) | 2020-11-30 | 2020-11-30 | Radial annular air inlet and outlet silencer with built-in sleeve structure annular silencer |
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| CN213628189U true CN213628189U (en) | 2021-07-06 |
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| CN202022833382.XU Active CN213628189U (en) | 2020-11-30 | 2020-11-30 | Radial annular air inlet and outlet silencer with built-in sleeve structure annular silencer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114811250A (en) * | 2021-12-28 | 2022-07-29 | 江苏大学镇江流体工程装备技术研究院 | Be applied to pump pipe-line system's noise elimination equipment |
-
2020
- 2020-11-30 CN CN202022833382.XU patent/CN213628189U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114811250A (en) * | 2021-12-28 | 2022-07-29 | 江苏大学镇江流体工程装备技术研究院 | Be applied to pump pipe-line system's noise elimination equipment |
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