CN212378600U - Low-noise sound-insulation guide air duct - Google Patents

Low-noise sound-insulation guide air duct Download PDF

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CN212378600U
CN212378600U CN202020220562.8U CN202020220562U CN212378600U CN 212378600 U CN212378600 U CN 212378600U CN 202020220562 U CN202020220562 U CN 202020220562U CN 212378600 U CN212378600 U CN 212378600U
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air duct
plate
sound
arc
height
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邱兆国
石鑫
魏普
赵迎九
郭江海
李庆建
江腾武
任玉凤
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Huadian Heavy Industries Co Ltd
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Huadian Heavy Industries Co Ltd
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Abstract

The utility model discloses a low noise sound insulation water conservancy diversion dryer, include the dryer body that constitutes by a plurality of piecemeal boards, the piecemeal board includes inclined plate, straight sideboard and arc, and inclined plate, straight sideboard and arc link up in proper order and integrated into one piece are the piecemeal board, and the high d of inclined plate1Greater than the height d of the straight-edged plate2Height d of the bevel board1Greater than the height d of the arc-shaped plate3Height d of straight side plate2Is less than the height d of the arc-shaped plate3The bottom of dryer body is provided with the fixed plate, the fixed plate is formed by arc bottom horizontal extension. The utility model discloses a constitute the piecemeal board by oblique sideboard, straight sideboard and arc and piece together and constitute the dryer body, adopt this kind by oblique sideboard, straight boardThe stability of dryer body self can be improved to the piecemeal board that sideboard and arc constitute.

Description

Low-noise sound-insulation guide air duct
Technical Field
The utility model relates to a low noise sound insulation water conservancy diversion dryer belongs to cooling tower dryer technical field.
Background
The air duct is a main air guiding device for local ventilation, and includes flexible air ducts made of canvas, plastic, rubber and the like, and metal air ducts made of iron sheet and aluminum sheet according to different manufacturing materials. In the ventilation system of a cooling tower, an air duct is an indispensable component, which is related to the normal operation of the cooling tower. An air supply structure is arranged in an air duct of the cooling tower, the air duct is required to have higher structural stability, and the existing air duct design has defects, so that the problem of barrel breakage of the air duct in the operation process due to vibration and other reasons is solved; in the operation process of the cooling tower, a fan and a motor arranged in the air duct can generate a large amount of noise, so that a noise reduction type air duct with a stable structure needs to be researched.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a low noise sound insulation water conservancy diversion dryer, its stable in structure can effectively separate the propagation of fan and the produced noise of motor.
In order to solve the technical problem, the utility model discloses a following technical scheme: a low noise sound insulation water conservancy diversion dryer, includes the dryer body that comprises a plurality of piecemeal boards, and the piecemeal board includes inclined edge plate, straight sideboard and arc, and inclined edge plate, straight sideboard and arc link up in proper order and integrated into one piece are the piecemeal board, and the height d of inclined edge plate1Greater than the height d of the straight-edged plate2Height d of the bevel board1Greater than the height d of the arc-shaped plate3Height d of straight side plate2Is less than the height d of the arc-shaped plate3,The bottom end of the air duct body is provided with a fixed plate which is fixedThe fixed plate is formed by horizontally extending the bottom end of the arc-shaped plate, and a sound insulation layer is arranged on the inner wall of the air duct body. The utility model discloses this kind of by sloping plate, straight flange and arc integrated into one piece's piecemeal board, structural strength is big. The noise problem of the air duct is solved through the sound-proof layer arranged on the inner wall of the air duct body.
In the low-noise sound-insulation diversion air duct, the top end of the air duct body is provided with the first circular opening, the bottom end of the air duct body is provided with the second circular opening, and the diameter of the second circular opening is larger than that of the first circular opening. One side of the second round opening is connected with the cooling tower, and the diameter of the second opening of the air duct body is larger than that of the first opening for ensuring the overall stability of the air duct and the cooling tower.
In the aforementioned low noise sound insulation water conservancy diversion dryer, be provided with a plurality of longitudinal bending boards on the dryer body, the one end of longitudinal bending board and the bottom of arc are on same horizontal plane, and the other end of longitudinal bending board sets up on the sloping plate, is formed with the passageway that the cross-section is trapezoidal form between the outer wall of longitudinal bending board and dryer body. The passageway that this kind of cross-section of utilization can prevent for trapezoidal shape from this internal suck-back of first circular opening combustion gas flow direction dryer, can accelerate the exhaust velocity of first circular opening part air current, improves the air volume of installing fan in the dryer, and then can improve the use the utility model discloses the heat transfer effect of the cooling tower of dryer.
In the low-noise sound-insulation guide air duct, the air duct body is formed by splicing 16 block plates, and each block plate is provided with 5 longitudinal bending plates which are arranged at equal intervals. Longitudinal bending plates are arranged on the block plates at equal intervals, so that the longitudinal bending plates with the same quality are uniformly distributed on the outer wall surface of the air duct body, and the structural stability of the air duct body is further improved.
In the low-noise sound-insulation guide air duct, the air duct body is provided with the transmission shaft mounting hole, and the transmission shaft mounting hole is formed in the inclined side plate, the straight side plate or the arc plate. When the transmission shaft sets up on the straight flange board, the stability of dryer body is best.
In the low-noise sound-insulation flow-guide air duct, the air duct body is provided with at least one transverse bending plate, and the transverse bending plate is annularly arranged on the air duct body and is penetrated on the longitudinal bending plate.
In the low-noise sound-insulation guide air duct, the air duct pressing plate and the bolt assembly are further included, and the air duct pressing plate is installed on the fixing plate through the bolt assembly.
In the low-noise sound-insulation guide air duct, the bolt assembly comprises a welded single-end stud, a nut and a washer.
In the low-noise sound-insulation guide air duct, the thickness h of the partition plate is 2-100 mm, and the partition plate is made of glass fiber reinforced plastic.
In the aforementioned low-noise sound-insulation guide air duct, the cross section of each partition plate is arc-shaped, and an angle of a central angle corresponding to each arc-shaped partition plate is 22.5 degrees. For construction convenience, the angle of the central angle corresponding to the partition plate is 22.5 degrees.
Compared with the prior art, the utility model discloses a constitute the dryer body by the sloping plate, straight flange and arc constitute the piecemeal board piece together, adopt this kind of piecemeal board that constitutes by sloping plate, straight flange and arc to improve the stability of dryer body self, through set up sound resistance material layer and anti-sound material layer on dryer body inner wall, resistance material is porous medium material, can effectual absorption high frequency, but the sound insulation performance is poor. The resistance material generally is thin metal plate hole structure, and the sound absorption coefficient is single peak value, consequently, adopts the mode that the two combines, has increased the sound absorption frequency band scope to can effectively separate the propagation of the produced noise of fan and motor, noise reduction, the utility model discloses the preparation degree of difficulty of dryer body is convenient for transport the installation.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, together with the description of the invention
The examples are used together to explain the invention and do not constitute an undue limitation on the invention. In the drawings:
fig. 1 is a front view of an air duct of the present invention;
fig. 2 is a top view of an air duct of the present invention;
fig. 3 is a schematic view of the installation of the fixing plate of the present invention;
FIG. 4 is a schematic structural diagram of the splitter plate of the present invention;
FIG. 5 is a schematic horizontal cross-sectional view of the longitudinal bending plate of the present invention;
fig. 6 is a schematic structural view of a sound insulation layer according to the present invention (the sound insulation layer includes a sound blocking material layer and a sound resistant material layer);
fig. 7 is a schematic structural view of another sound-insulating layer according to the present invention (the sound-insulating layer includes a first sound-blocking layer, a sound-resistant material layer, and a second sound-blocking layer);
figure 8 is a graph of sound absorption coefficient for the present invention.
Reference numerals: 1-splitting plate, 2-air duct body, 3-inclined side plate, 4-straight side plate, 5-arc plate, 6-fixing plate, 7-first circular opening, 8-second circular opening, 9-longitudinal bending plate, 10-transmission shaft mounting hole, 11-air duct pressing plate, 12-bolt assembly, 1201-welding single-end stud, 1202-nut, 1203-gasket, 13-transverse bending plate, 14-channel, 15-cement mortar, 16-sound insulation layer, 17-sound insulation material layer, 18-sound-resistant material layer, 1601-first sound insulation layer, 1602-second sound insulation layer.
The present invention will be further described with reference to the accompanying drawings and the detailed description.
Detailed Description
In order to make the technical field person understand the utility model scheme better, combine the attached drawings in the embodiment of the utility model below, to the technical scheme in the embodiment of the utility model clearly, describe completely. It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Embodiment 1 of the utility model: the utility model provides a low noise sound insulation water conservancy diversion dryer, includes dryer body 2 that comprises a plurality of piecemeal boards 1, and piecemeal board 1 includes hypotenuse board 3, straight flange board 4 and arc 5, and hypotenuse board 3, straight flange board 4 and arc 5 link up in proper order and integrated into one piece are piecemeal board 1, and the height d of hypotenuse board 31Greater than the height d of the straight edge plate 42Height d of bevel board 31Is greater than the height d of the arc-shaped plate 53Height d of straight edge plate 42Is less than the height d of the arc-shaped plate 53,The bottom of dryer body 2 is provided with fixed plate 6, and fixed plate 6 is formed by 5 bottom level extensions of arc, is provided with puigging 16 on the inner wall of dryer body 2.
Embodiment 2 of the utility model: the utility model provides a low noise sound insulation water conservancy diversion dryer, includes dryer body 2 that comprises a plurality of piecemeal boards 1, and piecemeal board 1 includes hypotenuse board 3, straight flange board 4 and arc 5, and hypotenuse board 3, straight flange board 4 and arc 5 link up in proper order and integrated into one piece are piecemeal board 1, and the height d of hypotenuse board 31Greater than the height d of the straight edge plate 42Height d of bevel board 31Is greater than the height d of the arc-shaped plate 53Height d of straight edge plate 42Is less than the height d of the arc-shaped plate 53,Wherein the height d of the bevel plate 311670mm, height d of the straight plate 42600mm, height d of the arc-shaped plate 53Is 1130 mm. Be convenient for install dryer body 2 to with the firm installation on the cooling tower of dryer body 2, be provided with in the bottom of dryer body 2 and form fixed plate 6 by 5 bottom horizontal extensions of arc. The inner wall of the wind barrel body 2 is provided with a sound insulation layer 16. The top of dryer body 2 is provided with first circular opening 7, and the bottom of dryer body 2 is provided with the circular opening of second 8, for further improving the stability of dryer body 2, makes the diameter of the circular opening of second 8Larger than the diameter of the first circular opening 7. The diameter of the first circular opening 7 is 10264mm, the diameter of the second circular opening 8 is 1068mm, and the throat diameter is 9820 mm. Furthermore, a plurality of longitudinal bending plates 9 are arranged on the air duct body 2, one ends of the longitudinal bending plates 9 and the bottom end of the arc-shaped plate 5 are on the same horizontal plane, the other ends of the longitudinal bending plates 9 are arranged on the inclined side plate 3, and a channel 14 with a trapezoidal section is formed between the longitudinal bending plates 9 and the outer wall surface of the air duct body 2. The passageway 14 that this kind of cross-section of utilization is trapezoidal form can prevent to suck backward from first circular opening 7 combustion gas flow to dryer body 2 in, the air current is from first circular opening 7 discharge back, the air current of near regional first circular opening 7 can get into the cross-section and be trapezoidal passageway 14, and flow downwards until discharging from passageway 14 along passageway 14 always, owing to keep away from first circular opening 7 from the air current of passageway 14 combustion gas, therefore can not suck backward again and get into dryer body 2 from first circular opening 7, can accelerate the exhaust velocity of first circular opening 7 department air current from this, the volume of ventilation of fan in the dryer is installed in the improvement, and then can improve and use the utility model discloses the heat transfer effect of the cooling tower of dryer.
Performance comparison table of air duct in the embodiment and traditional straight-tube air duct
Figure BDA0002394258440000041
Embodiment 3 of the utility model: the utility model provides a low noise sound insulation water conservancy diversion dryer, includes dryer body 2 that comprises a plurality of piecemeal boards 1, and piecemeal board 1 includes hypotenuse board 3, straight flange board 4 and arc 5, and hypotenuse board 3, straight flange board 4 and arc 5 link up in proper order and integrated into one piece are piecemeal board 1, and the height d of hypotenuse board 31Greater than the height d of the straight edge plate 42Height d of bevel board 31Is greater than the height d of the arc-shaped plate 53Height d of straight edge plate 42Is less than the height d of the arc-shaped plate 53,The bottom of dryer body 2 is provided with fixed plate 6, and fixed plate 6 is formed by 5 bottom level extensions of arc, is provided with puigging 16 on the inner wall of dryer body 2 (puigging 16 specifically is hindering the sound material layer 17, hinders the material on sound material layer 17 and is glass cotton or rock wool).The top of dryer body 2 is provided with first circular opening 7, and the bottom of dryer body 2 is provided with the circular opening of second 8, and the diameter of the circular opening of second 8 is greater than the diameter of first circular opening 7. Furthermore, a plurality of longitudinal bending plates 9 are arranged on the air duct body 2, one ends of the longitudinal bending plates 9 and the bottom end of the arc-shaped plate 5 are on the same horizontal plane, the other ends of the longitudinal bending plates 9 are arranged on the inclined side plate 3, and a channel 14 with a trapezoidal section is formed between the longitudinal bending plates 9 and the outer wall surface of the air duct body 2. Specifically, the air duct body 2 is formed by splicing 16 partition plates 1, and each partition plate 1 is provided with 5 longitudinal bending plates 9 which are arranged at equal intervals. The adjacent partition plates 1 can be spliced together by welding.
Embodiment 4 of the utility model: the utility model provides a low noise sound insulation water conservancy diversion dryer, includes dryer body 2 that comprises a plurality of piecemeal boards 1, and piecemeal board 1 includes hypotenuse board 3, straight flange board 4 and arc 5, and hypotenuse board 3, straight flange board 4 and arc 5 link up in proper order and integrated into one piece are piecemeal board 1, and the height d of hypotenuse board 31Greater than the height d of the straight edge plate 42Height d of bevel board 31Is greater than the height d of the arc-shaped plate 53Height d of straight edge plate 42Is less than the height d of the arc-shaped plate 53,The bottom of dryer body 2 is provided with fixed plate 6, and fixed plate 6 is formed by 5 bottom level extensions of arc, is provided with puigging 16 (puigging 16 specifically is anti-sound material layer 18, and the material on anti-sound material layer 18 is steel sheet or aluminum plate) on the inner wall of dryer body 2. The top of dryer body 2 is provided with first circular opening 7, and the bottom of dryer body 2 is provided with the circular opening of second 8, and the diameter of the circular opening of second 8 is greater than the diameter of first circular opening 7. Furthermore, a plurality of longitudinal bending plates 9 are arranged on the air duct body 2, one ends of the longitudinal bending plates 9 and the bottom end of the arc-shaped plate 5 are on the same horizontal plane, the other ends of the longitudinal bending plates 9 are arranged on the inclined side plate 3, and a channel 14 with a trapezoidal section is formed between the longitudinal bending plates 9 and the outer wall surface of the air duct body 2. Specifically, the air duct body 2 is formed by splicing 16 partition plates 1, and each partition plate 1 is provided with 5 longitudinal bending plates 9 which are arranged at equal intervals. Further, a transmission shaft mounting hole 10 is formed in the air duct body 2, and the transmission shaft mounting hole 10 is formed in the bevel edge plate3 above. Further, be provided with at least one horizontal bending plate 13 on the dryer body 2, horizontal bending plate 13 encircles and is set up on dryer body 2, and wears to locate on vertical bending plate 9. The utility model discloses the dryer still includes dryer clamp plate 11 and bolt assembly 12, and dryer clamp plate 11 passes through bolt assembly 12 to be installed on fixed plate 6. The bolt assembly 12 includes a welded single-ended stud 1201, a nut 1202, and a washer 1203. The thickness h of the block plate 1 is 2mm, and the block plate 1 is made of glass fiber reinforced plastic.
Embodiment 5 of the utility model: the utility model provides a low noise sound insulation water conservancy diversion dryer, includes dryer body 2 that comprises a plurality of piecemeal boards 1, and piecemeal board 1 includes hypotenuse board 3, straight flange board 4 and arc 5, and hypotenuse board 3, straight flange board 4 and arc 5 link up in proper order and integrated into one piece are piecemeal board 1, and the height d of hypotenuse board 31Greater than the height d of the straight edge plate 42Height d of bevel board 31Is greater than the height d of the arc-shaped plate 53Height d of straight edge plate 42Is less than the height d of the arc-shaped plate 53,The bottom of dryer body 2 is provided with fixed plate 6, and fixed plate 6 is formed by 5 bottom level extensions of arc, is provided with puigging 16 on the inner wall of dryer body 2. The soundproof layer 16 includes a sound-blocking material layer 17 and a sound-proof material layer 18, and the sound-blocking material layer 17 is provided between the sound-proof material layer 18 and the inner wall of the wind tube body 2. Wherein, the material of the sound-proof material layer 17 is glass wool or rock wool, and the material of the sound-proof material layer 18 is steel plate or aluminum plate
The top of dryer body 2 is provided with first circular opening 7, and the bottom of dryer body 2 is provided with the circular opening of second 8, and the diameter of the circular opening of second 8 is greater than the diameter of first circular opening 7. Furthermore, a plurality of longitudinal bending plates 9 are arranged on the air duct body 2, one ends of the longitudinal bending plates 9 and the bottom end of the arc-shaped plate 5 are on the same horizontal plane, the other ends of the longitudinal bending plates 9 are arranged on the inclined side plate 3, and a channel 14 with a trapezoidal section is formed between the longitudinal bending plates 9 and the outer wall surface of the air duct body 2. Specifically, the air duct body 2 is formed by splicing 16 partition plates 1, and each partition plate 1 is provided with 5 longitudinal bending plates 9 which are arranged at equal intervals. Further, a transmission shaft mounting hole 10 is formed in the air duct body 2, and the transmission shaft mounting hole 10 is formed in the straight-edge plate 4. Further, be provided with at least one horizontal bending plate 13 on the dryer body 2, horizontal bending plate 13 encircles and is set up on dryer body 2, and wears to locate on vertical bending plate 9. The utility model discloses the dryer still includes dryer clamp plate 11 and bolt assembly 12, and dryer clamp plate 11 passes through bolt assembly 12 to be installed on fixed plate 6. In order to prevent the corrosion of the parts such as the bolt assembly 12 of the air duct pressing plate 11, a layer of cement mortar 15 is covered on the air duct pressing plate 11 and the bolt assembly 12. The bolt assembly 12 includes a welded single-ended stud 1201, a nut 1202, and a washer 1203. The thickness h of the block plate 1 is 10mm, and the block plate 1 is made of glass fiber reinforced plastic. The cross section of the block plate 1 is arc-shaped, and the angle of the central angle corresponding to each block plate 1 with the arc-shaped cross section is 22.5 degrees. As shown in fig. 8, the wind tunnel using the impedance composite material layer as the sound insulation layer 16 in this example has better sound absorption effect than the wind tunnel using only the sound insulation material layer 17 or the sound resistance material layer 18.
Embodiment 6 of the utility model: the utility model provides a low noise sound insulation water conservancy diversion dryer, includes dryer body 2 that comprises a plurality of piecemeal boards 1, and piecemeal board 1 includes hypotenuse board 3, straight flange board 4 and arc 5, and hypotenuse board 3, straight flange board 4 and arc 5 link up in proper order and integrated into one piece are piecemeal board 1, and the height d of hypotenuse board 31Greater than the height d of the straight edge plate 42Height d of bevel board 31Is greater than the height d of the arc-shaped plate 53Height d of straight edge plate 42Is less than the height d of the arc-shaped plate 53Height d of bevel board 311670mm, height d of the straight plate 42600mm, height d of the arc-shaped plate 53Is 1130 mm.
The bottom of dryer body 2 is provided with fixed plate 6, and fixed plate 6 is formed by 5 bottom level extensions of arc, is provided with puigging 16 on the inner wall of dryer body 2, and it includes that first sound blocking layer 1601, second sound blocking layer 1602 and at least one deck sound-proof material layer 18, and sound-proof material layer 18 sets up between first sound blocking layer 1601 and second sound blocking layer 1602. The first sound-blocking layer 1601 and the second sound-blocking layer 1602 are made of glass wool or rock wool; the sound-proof material layer 18 is made of steel plate or aluminum plate.
The top of dryer body 2 is provided with first circular opening 7, and the bottom of dryer body 2 is provided with the circular opening of second 8, and the diameter of the circular opening of second 8 is greater than the diameter of first circular opening 7. Furthermore, a plurality of longitudinal bending plates 9 are arranged on the air duct body 2, one ends of the longitudinal bending plates 9 and the bottom end of the arc-shaped plate 5 are on the same horizontal plane, the other ends of the longitudinal bending plates 9 are arranged on the inclined side plate 3, and a channel 14 with a trapezoidal section is formed between the longitudinal bending plates 9 and the outer wall surface of the air duct body 2. Specifically, the air duct body 2 is formed by splicing 16 partition plates 1, and each partition plate 1 is provided with 5 longitudinal bending plates 9 which are arranged at equal intervals. Further, be provided with transmission shaft mounting hole 10 on the dryer body 2, transmission shaft mounting hole 10 sets up on arc 5. Further, be provided with at least one horizontal bending plate 13 on the dryer body 2, horizontal bending plate 13 encircles and is set up on dryer body 2, and wears to locate on vertical bending plate 9. The utility model discloses the dryer still includes dryer clamp plate 11 and bolt assembly 12, and dryer clamp plate 11 passes through bolt assembly 12 to be installed on fixed plate 6. The bolt assembly 12 includes a welded single-ended stud 1201, a nut 1202, and a washer 1203. The thickness h of the partition plate 1 is 8mm, and the partition plate 1 is made of glass fiber reinforced plastic. The cross section of the block plate 1 is arc-shaped, and the angle of the central angle corresponding to each block plate 1 with the arc-shaped cross section is 22.5 degrees. In this example, the sound insulation layer 16 is formed of a resistive composite material layer structure of the first sound barrier layer 1601, the soundproof material layer 18, and the second sound barrier layer 1602, and has an optimum sound absorption effect as compared with the air ducts of examples 1 to 5.
The utility model discloses a theory of operation: the utility model discloses this kind of by hypotenuse board 3, straight flange board 4 and 5 integrated into one piece's of arc division board 1, structural strength is big. The circular opening 8 one side of second is connected with the cooling tower, for guaranteeing dryer and the holistic stability of cooling tower, makes the diameter of the second opening of dryer body 2 be greater than the diameter of first opening. The passageway 14 that this kind of cross-section of utilization is trapezoidal form can prevent to suck backward from first circular opening 7 combustion gas flow to dryer body 2 in, the air current is from first circular opening 7 discharge back, the air current of near regional first circular opening 7 can get into the cross-section and be trapezoidal passageway 14, and flow downwards until discharging from passageway 14 along passageway 14 always, owing to keep away from first circular opening 7 from the air current of passageway 14 combustion gas, therefore can not suck backward again and get into dryer body 2 from first circular opening 7, can accelerate the exhaust velocity of first circular opening 7 department air current from this, the volume of ventilation of fan in the dryer is installed in the improvement, and then can improve and use the utility model discloses the heat transfer effect of the cooling tower of dryer. Longitudinal bending plates 9 are arranged on the block plates 1 at equal intervals, so that the longitudinal bending plates 9 with the same quality are uniformly distributed on the outer wall surface of the air duct body 2, and the structural stability of the air duct body 2 is further improved.

Claims (10)

1. The utility model provides a low noise sound insulation water conservancy diversion dryer, its characterized in that includes dryer body (2) that constitute by a plurality of minutes board (1), minute board (1) is including oblique sideboard (3), straight sideboard (4) and arc (5), oblique sideboard (3), straight sideboard (4) and arc (5) link up in proper order and integrated into one piece be minute board (1), the height d of oblique sideboard (3) is for minute board (1)1Is greater than the height d of the straight side plate (4)2The height d of the bevel board (3)1Is greater than the height d of the arc-shaped plate (5)3The height d of the straight side plate (4)2Is less than the height d of the arc-shaped plate (5)3,The bottom of dryer body (2) is provided with fixed plate (6), fixed plate (6) are formed by arc (5) bottom horizontal extension, be provided with puigging (16) on the inner wall of dryer body (2).
2. The low-noise sound-insulation guide air duct according to claim 1, wherein a first circular opening (7) is arranged at the top end of the air duct body (2), a second circular opening (8) is arranged at the bottom end of the air duct body (2), and the diameter of the second circular opening (8) is larger than that of the first circular opening (7).
3. The low-noise sound-insulation guide air duct according to claim 2, wherein the air duct body (2) is provided with a plurality of longitudinal bent plates (9), one ends of the longitudinal bent plates (9) and the bottom ends of the arc-shaped plates (5) are on the same horizontal plane, the other ends of the longitudinal bent plates (9) are arranged on the inclined side plate (3), and a channel (14) with a trapezoidal section is formed between the longitudinal bent plates (9) and the outer wall surface of the air duct body (2).
4. The low-noise sound-insulation guide air duct according to claim 3, wherein the air duct body (2) is formed by splicing 16 partition plates (1), and each partition plate (1) is provided with 5 longitudinal bent plates (9) which are arranged at equal intervals.
5. The low-noise sound-insulation guide air duct according to claim 3 or 4, wherein a transmission shaft mounting hole (10) is formed in the air duct body (2), and the transmission shaft mounting hole (10) is formed in the inclined side plate (3), the straight side plate (4) or the arc-shaped plate (5).
6. The low-noise sound-insulation guide air duct according to claim 5, wherein the air duct body (2) is provided with at least one transverse bending plate (13), and the transverse bending plate (13) is annularly arranged on the air duct body (2) and penetrates through the longitudinal bending plate (9).
7. The low-noise sound-insulation guide air duct according to claim 6, further comprising an air duct pressure plate (11) and a bolt assembly (12), wherein the air duct pressure plate (11) is mounted on the fixing plate (6) through the bolt assembly (12); the bolt assembly (12) includes a welded single-ended stud (1201), a nut (1202), and a washer (1203).
8. The low-noise sound-insulation guide air duct according to claim 7, wherein the thickness h of the partition plate (1) is 2mm to 10mm, and the partition plate (1) is made of glass fiber reinforced plastic; the cross section of the partition plate (1) is arc-shaped, and the angle of the central angle corresponding to each arc-shaped partition plate (1) is 22.5 degrees.
9. A low noise sound insulation guide air duct according to claim 1, characterized in that the sound insulation layer (16) comprises a sound-proof material layer (17) and/or a sound-proof material layer (18); when the soundproof layer (16) includes the sound-blocking material layer (17) and the sound-resistant material layer (18), the sound-blocking material layer (17) is provided between the sound-resistant material layer (18) and the inner wall of the drum body (2).
10. The guide wind barrel for low noise and sound insulation of claim 1, wherein the sound insulation layer (16) comprises a first sound-proof layer (1601), a second sound-proof layer (1602) and at least one sound-proof material layer (18), and the sound-proof material layer (18) is arranged between the first sound-proof layer (1601) and the second sound-proof layer (1602).
CN202020220562.8U 2020-02-27 2020-02-27 Low-noise sound-insulation guide air duct Active CN212378600U (en)

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Application Number Priority Date Filing Date Title
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