CN217690487U - A high-efficient muffler for reducing low smoke duct noise - Google Patents

Abstract

The utility model discloses a high-efficient muffler for reducing low smoke and wind channel noise, include the wind channel inlayer that forms by the stainless steel material welding, the top joint of wind channel inlayer has the multiunit bracing piece, the top fixedly connected with shielding plate of bracing piece, the first noise damping layer of one deck is laid to the outer wall of wind channel inlayer, the surface on first noise damping layer is provided with the second noise damping layer, the internally mounted of wind channel inlayer has the deceleration mechanism that is used for the cigarette wind deceleration. The first silencing layer made of the silencing plastering material is used for eliminating mechanical vibration noise between the stainless steel plate at the inner layer of the air duct and the second silencing layer made of the outermost metal foam, and has good sound absorption effect on various noises from middle low frequency to high frequency; and the outermost layer arranges the metal foam board, has compensatied the breakable shortcoming that leads to the noise reduction effect poor of rock wool board, under the condition that does not change flue structure itself, has improved noise reduction effect.

Description

Efficient silencer for reducing noise of smoke duct

Technical Field

The utility model relates to a technical field of making an uproar specifically is a high-efficient muffler for reducing low smoke wind channel noise.

Background

The smoke duct is a duct for exhausting smoke and intaking air for industrial furnace, and the duct is equipped with air door (valve) for regulating air speed and pressure in the duct, and is a duct formed from furnace wall portion heated surface duct and wall-covering tube. Divided into horizontal flue and tail flue

At present, the existing noise reduction methods for smoke air ducts mostly focus on the improvement of internal structures (additionally arranging a flow deflector and the like in the air duct) and the improvement of sound absorption materials on the sides of the air blowers (additionally arranging rock wool sound absorption plates and the like on the two sides of the air inlets of the air blowers) and the like. The rock wool board is fragile and leads to the noise reduction effect poor, and it is more complicated to reform transform the on-the-spot implementation of structural approach, even relates to the transformation of fan important structure (such as movable vane blade etc.), and the cost is higher, and noise reduction effect is limited, is difficult to realize effectively making an uproar falls in flue, for this reason, we propose a high-efficient muffler for reducing flue noise.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a high-efficient muffler for reducing low wind channel noise to solve the problem that proposes in the background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a high-efficient muffler for reducing low smoke and air flue noise, includes the wind channel inlayer that forms by the stainless steel material welding, the top joint of wind channel inlayer has the multiunit bracing piece, the top fixedly connected with shielding plate of bracing piece, the first noise reduction layer of one deck is laid to the outer wall of wind channel inlayer, the surface on first noise reduction layer is provided with the second noise reduction layer, the internally mounted of wind channel inlayer has the deceleration mechanism that is used for the cigarette wind deceleration.

Furthermore, the first sound-deadening layer is made of sound-deadening plastering materials, and the second sound-deadening layer is made of metal foam.

Further, the speed reduction mechanism includes dog, speed reduction pipe, speed reduction board, ventiduct and mounting panel, the equal fixedly connected with dog in both sides of wind channel inlayer inner wall, the top overlap joint of dog has the speed reduction pipe, the inside fixedly connected with multiunit "Z" the speed reduction board of shape of speed reduction pipe, it is adjacent form the ventiduct between the speed reduction board, the equal fixedly connected with "L" the mounting panel of shape in both sides at speed reduction nose portion, one side of mounting panel is laminated with the inner wall of wind channel inlayer mutually, locking bolt fixed mounting is passed through to one side of mounting panel in the inner wall of wind channel inlayer.

Further, the first articulated piece of top fixedly connected with of mounting panel, the surface of first articulated piece is rotated through the articulated shaft and is connected with the articulated piece of second, the top fixedly connected with pull ring of the articulated piece of second.

Furthermore, the manufacturing materials of the speed reduction plate, the mounting plate, the first hinging block, the hinging shaft, the second hinging block and the pull ring are all stainless steel materials.

Compared with the prior art, the utility model discloses following beneficial effect has: the first silencing layer made of the silencing plastering material is used for eliminating mechanical vibration noise between the stainless steel plate at the inner layer of the air duct and the second silencing layer made of the outermost metal foam, and has good sound absorption effect on various noises from middle low frequency to high frequency; and the outmost metal foam board of arranging has compensatied the fragile poor shortcoming of noise reduction effect that leads to of rock wool board, under the condition that does not change the structure of flue duct itself, has improved noise reduction effect, and the setting up of deceleration mechanism can be carried the flue wind through the inside in wind channel inlayer by crooked ventiduct to alright carry out the deceleration with the flue wind, thereby can prevent to cause the noise too big because the wind speed is too high.

Drawings

Fig. 1 is a schematic structural view of the front view of the present invention;

FIG. 2 is a schematic structural diagram of the top view of the inner layer of the air duct according to the present invention;

fig. 3 is an enlarged schematic view of the structure a of the present invention.

In the figure: the air duct comprises an air duct inner layer 1, a supporting rod 2, a baffle plate 3, a first sound-absorbing layer 4, a second sound-absorbing layer 5, a speed reduction mechanism 6, a stop dog 7, a speed reduction pipe 8, a speed reduction plate 9, a ventilation duct 10, a mounting plate 11, a locking bolt 12, a first hinging block 13, a hinging shaft 14, a second hinging block 15 and a pull ring 16.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: the utility model provides a high-efficient muffler for reducing low smoke and air flue noise, includes the wind channel inlayer 1 that forms by the stainless steel material welding, the top joint of wind channel inlayer 1 has multiunit bracing piece 2, the top fixedly connected with shielding plate 3 of bracing piece 2, the outer wall of wind channel inlayer 1 lays the first noise reduction layer 4 of one deck, the surface on first noise reduction layer 4 is provided with second noise reduction layer 5, the internally mounted of wind channel inlayer 1 has the deceleration mechanism 6 that is used for the cigarette wind deceleration.

Furthermore, the first silencing layer 4 is made of silencing plastering materials, the second silencing layer 5 is made of metal foams, the first silencing layer made of the silencing plastering materials is used for eliminating mechanical vibration noise between the stainless steel plate on the inner layer 1 of the air duct and the second silencing layer 3 made of the outermost metal foams, and meanwhile, the first silencing layer has good sound absorption effect on various noises from middle low frequency to high frequency; and the outermost metal foam board of arranging has compensatied the fragile shortcoming that leads to the noise reduction effect poor of rock wool board, under the condition that does not change flue duct structure itself, has improved the noise reduction effect.

Further, speed reduction mechanism 6 includes dog 7, speed reduction pipe 8, speed reduction board 9, ventiduct 10 and mounting panel 11, the equal fixedly connected with dog 7 in both sides of 1 inner wall of wind channel inlayer, the top overlap joint of dog 7 has speed reduction pipe 8, speed reduction pipe 8's inside fixedly connected with multiunit "Z" shape speed reduction board 9, it is adjacent form ventiduct 10 between the speed reduction board 9, the equal fixedly connected with "L" shape mounting panel 11 in both sides at speed reduction pipe 8 top, one side of mounting panel 11 is laminated with the inner wall of wind channel inlayer 1, locking bolt 12 fixed mounting is passed through to one side of mounting panel 11 in the inner wall of wind channel inlayer 1, and speed reduction mechanism 6's setting can be carried by crooked ventiduct 10 through the inside flue wind of wind channel inlayer 1 to alright carry out the speed reduction with the flue wind, thereby can prevent to cause the noise too big because the wind speed.

Further, the first articulated piece 13 of top fixedly connected with of mounting panel 11, the surface of first articulated piece 13 is rotated through articulated shaft 14 and is connected with the articulated piece 15 of second, the top fixedly connected with pull ring 16 of the articulated piece 15 of second utilizes the pull ring 16 that the articulated piece 15 of second is connected can conveniently install locking bolt 12 fixedly to can conveniently take out deceleration mechanism 6 by the inside of wind channel inlayer 1.

Furthermore, the manufacturing materials of the decelerating plate 9, the mounting plate 11, the first hinge block 13, the hinge shaft 14, the second hinge block 15 and the pull ring 16 are all stainless steel materials, and the service life of the whole device can be prolonged to a certain extent by the decelerating plate 9, the mounting plate 11, the first hinge block 13, the hinge shaft 14, the second hinge block 15 and the pull ring 16 which are made of stainless steel materials.

When the air duct reducing device is used, firstly, the reducing pipe 8 to be installed is placed at the top of the stop block 7, the locking bolt 12 can be conveniently installed and fixed through the pull ring 16 connected with the second hinging block 15, the reducing mechanism 6 can be conveniently taken out from the inside of the air duct inner layer 1, then the reducing pipe 8 is fixedly installed through the locking bolt 12, the Z-shaped reducing plate 9 is arranged inside the air duct inner layer 1, flue air to be conveyed is conveyed through the bent air duct 10, so that the speed of the flue air can be reduced, the phenomenon that the noise is too high due to too high air speed can be prevented, the first silencing layer made of the silencing fabric is used for eliminating mechanical vibration noise between the stainless steel plate of the air duct inner layer 1 and the second silencing layer 3 made of the outermost metal foam, and meanwhile, the sound absorption effect on various noises from low frequency to high frequency is good; and the outermost layer arranges the metal foam board, has compensatied the breakable shortcoming that leads to the noise reduction effect poor of rock wool board, under the condition that does not change flue structure itself, has improved noise reduction effect.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (5)

1. The utility model provides a high-efficient muffler for reducing low smoke and air flue noise, includes wind channel inlayer (1) that forms by the stainless steel material welding, the top joint of wind channel inlayer (1) has multiunit bracing piece (2), the top fixedly connected with shielding plate (3) of bracing piece (2), its characterized in that: the outer wall of wind channel inlayer (1) lays the first amortization layer of one deck (4), the surface of first amortization layer (4) is provided with second amortization layer (5), the internally mounted of wind channel inlayer (1) has a deceleration mechanism (6) that is used for the gas and wind deceleration.

2. A high efficiency silencer for reducing stack noise according to claim 1, wherein: the first sound-absorbing layer (4) is made of sound-absorbing plastering materials, and the second sound-absorbing layer (5) is made of metal foam.

3. A high efficiency silencer for reducing stack noise according to claim 1, wherein: the utility model discloses a wind channel, including wind channel inlayer (1), speed reduction mechanism (6), speed reduction pipe (8), speed reduction board (9), ventiduct (10) and mounting panel (11), the equal fixedly connected with dog (7) in both sides of wind channel inlayer (1) inner wall, the top overlap joint of dog (7) has speed reduction pipe (8), speed reduction pipe's (8) inside fixedly connected with multiunit "Z" shape speed reduction board (9), adjacent form ventiduct (10) between speed reduction board (9), the equal fixedly connected with in both sides at speed reduction pipe (8) top mounting panel (11) of "L" shape, one side and the inner wall of wind channel inlayer (1) of mounting panel (11) laminate mutually, one side of mounting panel (11) is through locking bolt (12) fixed mounting in the inner wall of wind channel inlayer (1).

4. A high efficiency silencer for reducing stack noise according to claim 3, wherein: the top fixedly connected with of mounting panel (11) articulates piece (13), the surface of first articulated piece (13) is rotated through articulated shaft (14) and is connected with articulated piece (15) of second, the top fixedly connected with pull ring (16) of the articulated piece (15) of second.

5. An efficient silencer for reducing stack noise according to claim 4, wherein: the manufacturing materials of the decelerating plate (9), the mounting plate (11), the first hinging block (13), the hinging shaft (14), the second hinging block (15) and the pull ring (16) are all stainless steel materials.

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