CN209959579U

CN209959579U - Non-independent integral fan silencer

Info

Publication number: CN209959579U
Application number: CN201920451862.4U
Authority: CN
Inventors: 毛金铎; 毛翔宇; 尚昭
Original assignee: Hebei Punade Fan Manufacturing Co Ltd
Current assignee: Hebei Punade Fan Manufacturing Co Ltd
Priority date: 2019-04-04
Filing date: 2019-04-04
Publication date: 2020-01-17
Anticipated expiration: 2029-04-04

Abstract

The utility model relates to a fan silencer technical field just discloses a dependent disjunctor formula fan silencer of non-, including base and silencer shell, the top fixed mounting of base has the fan, the left surface fixed mounting of base has the back shroud, the left surface fixed mounting of back shroud has the casing, the fixed intercommunication in front of casing has the air outlet, the left surface and the back shroud of fan contact, the left surface of casing is connected with the right flank of silencer shell. This non-independent disjunctor formula fan silencer through making the silencer shell the square, is linked together the silencer shell directly with the casing moreover, has practiced thrift a large amount of spaces like this, can adjust the interval between activity noise elimination piece and the fixed noise elimination piece through screw rod and connecting block and activity noise elimination piece, and then adjusts the refraction number of times of sound wave on activity noise elimination piece and fixed noise elimination piece, and then weakens the sound wave, strengthens the effect of eliminating the noise.

Description

Non-independent integral fan silencer

Technical Field

The utility model relates to a fan silencer technical field specifically is a dependent disjunctor formula fan silencer of non.

Background

The fan silencer is the same with the form of exhaust duct silencer and induced draft fan silencer, all adopts the resistive sound absorption noise reduction principle that centering, high frequency broadband characteristic have better effect, falls the sound principle and micropunch silencer and impedance combined type silencer to the resistance noise elimination of low, intermediate frequency and pulsation characteristic time good effect, and the fan silencer divide into: the silencer of the centrifugal fan, the silencer of the Roots fan, the silencer of the blower and the silencer of the axial flow fan is mainly used for reducing aerodynamic noise of various fan air inlets, air channels and air inlets of a closed machine room.

The traditional silencer is generally a cylindrical external shape structure, a fan shaft occupies a large amount of space when the silencer is arranged, so that the occupied space of the silencer is about five times the width of a fan shell, the air inlet direction of the silencer is parallel to the fan shaft, the silencer is generally a pure resistive silencer, the silencing effect of the silencer is not good enough, the silencing effect cannot be changed and adjusted on an internal structure, a non-independent integral fan silencer is needed, the space is saved, and the silencing effect is enhanced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a not enough to prior art, the utility model provides a non-independent disjunctor formula fan silencer possesses the volume less, and noise cancelling effect is good, and material saving's use and adjustable advantage have solved the great and not good enough problem of noise cancelling effect of traditional silencer occupation space.

The utility model provides a following technical scheme: a non-independent integrated fan silencer comprises a base and a silencer shell, wherein a fan is fixedly mounted at the top of the base, a rear cover plate is fixedly mounted on the left side face of the base, a casing is fixedly mounted on the left side face of the rear cover plate, an air outlet is fixedly communicated with the front face of the casing, the left side face of the fan is in contact with the rear cover plate, the left side face of the casing is connected with the right side face of the silencer shell, a dust screen is fixedly mounted at the air inlet of the silencer shell, a bolt is mounted on the top of the silencer shell in a threaded manner, a sealing ring is fixedly bonded on the right side face of the silencer shell, sound absorption cotton is fixedly bonded on the side face of the sealing ring, a wind guide inclined plate is mounted on a left side face fixer of an inner cavity of the silencer shell, an air inlet through hole, the utility model discloses a silencer, including silencer shell, connecting rod, fixed connection, sound absorbing layer, sound absorbing hole, fixed noise reduction piece, the top fixed mounting of silencer shell has the screw thread seat, the screw rod is installed to the internal thread of screw thread seat, the bottom of screw rod runs through the silencer shell and extends to the inner chamber and the movable mounting of silencer shell has the connecting block, the bottom fixedly connected with connecting plate of connecting block, the side fixed connection connecting rod of connecting plate, the other end fixedly connected with activity noise reduction piece of connecting rod, the fixed cladding in inside of activity noise reduction piece has middle sound-absorbing layer, the sound absorbing hole has been seted up to the surface of activity noise reduction piece, the positive fixed mounting of silencer shell inner chamber has fixed noise.

Preferably, the inside of the middle sound absorption layer is filled with superfine glass wool, and the isolation layer is a polyester fiber sound absorption board.

Preferably, the fixed silencing sheet contains a middle sound absorption layer and sound absorption holes which are the same as those of the movable silencing sheet.

Preferably, the wave-shaped sound-absorbing sheet comprises a middle sound-absorbing layer and sound-absorbing holes which are the same as those of the movable sound-absorbing sheet.

Preferably, the number of the air guide inclined plates is two, and the two air guide inclined plates are symmetrically distributed by taking the transverse center line of the silencer shell as a symmetrical axis.

Compared with the prior art, the utility model discloses possess following beneficial effect:

1. this non-independent disjunctor formula fan silencer through making the silencer shell the square, is linked together the silencer shell directly with the casing moreover, has practiced thrift a large amount of spaces like this, can adjust the interval between activity noise elimination piece and the fixed noise elimination piece through screw rod and connecting block and activity noise elimination piece, and then adjusts the refraction number of times of sound wave on activity noise elimination piece and fixed noise elimination piece, and then weakens the sound wave, strengthens the effect of eliminating the noise.

2. This non-independent disjunctor formula fan silencer weakens once more through wave form noise damping piece to the sound wave that movable noise damping piece and fixed noise damping piece do not weaken, strengthens the noise cancelling effect of this silencer, makes its direction of change after external mobile air gets into silencer shell inner wall through the wind-guiding swash plate, and then makes the sound wave can with movable noise damping piece or fixed noise damping piece between produce the angle, and then makes the sound wave carry out the refraction and weaken.

Drawings

FIG. 1 is a side view of the overall structure of the present invention;

FIG. 2 is a side view of the muffler shell according to the present invention;

fig. 3 is a front sectional view of the muffler shell of the structure of the present invention.

In the figure: 1. a base; 2. a rear cover plate; 3. a fan; 4. a housing; 5. a muffler housing; 6. a dust screen; 7. an air outlet; 8. a bolt; 9. a seal ring; 10. sound absorbing cotton; 11. a wave-shaped noise-reduction sheet; 12. a screw; 13. a threaded seat; 14. connecting blocks; 15. a connecting rod; 16. fixing the silencing sheet; 17. an intermediate sound absorbing layer; 18. a movable noise reduction sheet; 19. a sound absorbing aperture; 20. an isolation layer; 21. an air guide sloping plate; 22. an air inlet through hole; 23. a connecting plate.

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, a non-independent integrated fan muffler comprises a base 1 and a muffler shell 5, wherein the muffler shell 5 is made into a cube, and the muffler shell 5 is directly communicated with a casing 4, thereby saving a large amount of space, a fan 3 is fixedly installed at the top of the base 1, a rear cover plate 2 is fixedly installed at the left side surface of the base 1, a casing 4 is fixedly installed at the left side surface of the rear cover plate 2, an air outlet 7 is fixedly communicated at the front surface of the casing 4, the left side surface of the fan 3 is in contact with the rear cover plate 2, the left side surface of the casing 4 is connected with the right side surface of the muffler shell 5, a dust screen 6 is fixedly installed at an air inlet of the muffler shell 5, the dust screen 6 can prevent external dust from entering the interior of the muffler shell 5, thereby ensuring the noise elimination effect of the muffler, a bolt 8 is, the right side surface of the silencer shell 5 is fixedly bonded with a sealing ring 9, the side surface of the sealing ring 9 is fixedly bonded with sound absorption cotton 10, the sealing ring can ensure the tightness between the silencer shell and the casing 4, the sound absorption cotton 10 is favorable for preventing the joint from generating noise, a left side surface fixer of an inner cavity of the silencer shell 5 is provided with two air guide inclined plates 21, the number of the air guide inclined plates 21 is two, the two air guide inclined plates 21 are symmetrically distributed by taking the transverse central line of the silencer shell 5 as a symmetric axis, external flowing air enters the inner wall of the silencer shell 5 through the air guide inclined plates 21 and then changes the direction of the flowing air, sound waves can generate an angle with the movable silencing pieces 18 or the fixed silencing pieces 16, the sound waves are refracted and weakened, air inlet through holes 22 are formed in the air guide inclined plates 21, an isolating layer 20 is fixedly arranged at the top of the inner cavity, the isolating layer 20 can absorb some sound waves acting on the inner wall of the silencer shell 5, so that the silencing effect of the silencer is ensured, the top of the silencer shell 5 is fixedly provided with the threaded seat 13, the internal threads of the threaded seat 13 are provided with the screw 12, the bottom of the screw 12 penetrates through the silencer shell 5 and extends to the inner cavity of the silencer shell 5 and is movably provided with the connecting block 14, the bottom of the connecting block 14 is fixedly connected with the connecting plate 23, the side surface of the connecting plate 23 is fixedly connected with the connecting rod 15, the other end of the connecting rod 15 is fixedly connected with the movable silencing piece 18, the distance between the movable silencing piece 18 and the fixed silencing piece 16 can be adjusted through the screw 12, the connecting block 14 and the movable silencing piece 18, the refraction times of the sound waves on the movable silencing piece 18 and the fixed silencing piece 16 are adjusted, the sound waves are weakened, and the, the fixed cladding in inside of activity noise damping piece 18 has middle sound-absorbing layer 17, middle sound-absorbing layer 17 is inside to be filled to an ultra-fine glass wool, sound-absorbing hole 19 has been seted up to the surface of activity noise damping piece 18, can weaken in transmitting middle sound-absorbing layer 17 with the sound wave through sound-absorbing hole 19, the front fixed mounting of 5 inner chambers of silencer shell has fixed noise damping piece 16, the inside of fixed noise damping piece 16 includes middle sound-absorbing layer 17 and the sound-absorbing hole 19 the same with activity noise damping piece 18, the front fixed mounting that 5 inner chambers of silencer shell are located the connecting plate 23 right side has wave form noise damping piece 11's inside to include middle sound-absorbing layer 17 and the sound-absorbing hole 19 the same with activity noise damping piece 18, weaken the sound wave that activity noise damping piece 18 and fixed noise damping piece 16 do not weaken once more through wave form noise damping piece 11, strengthen the anechoic effect of this.

The operating principle, outside air gets into the inside of silencer shell 5 under the effect of fan 3, the sound wave refracts to movable noise reduction piece 18 or fixed noise reduction piece 16 under the effect of air inlet through-hole 22 on the air guide swash plate 21, the sound wave carries out many times refraction in movable noise reduction piece 18 and fixed noise reduction piece 16 department, it weakens the sound wave once more to enter into wave form noise reduction piece 11 department, when the distance between needs adjustment movable noise reduction piece 18 and fixed noise reduction piece 16, through rotating screw 12 and then drive connecting block 14 and move from top to bottom and make connecting plate 23 drive movable noise reduction piece 18 through the connecting rod and move, guarantee its and the distance change between the fixed noise reduction piece 16, and then change the number of times of sound wave refraction, change its noise elimination 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

1. The utility model provides a non-independent disjunctor formula fan silencer, includes base (1) and silencer shell (5), its characterized in that: the air conditioner is characterized in that a fan (3) is fixedly mounted at the top of the base (1), a rear cover plate (2) is fixedly mounted on the left side face of the base (1), a casing (4) is fixedly mounted on the left side face of the rear cover plate (2), an air outlet (7) is fixedly communicated with the front face of the casing (4), the left side face of the fan (3) is in contact with the rear cover plate (2), the left side face of the casing (4) is connected with the right side face of a silencer shell (5), a dust screen (6) is fixedly mounted at an air inlet of the silencer shell (5), a bolt (8) is mounted on the top of the silencer shell (5) in a threaded manner, a sealing ring (9) is fixedly bonded on the right side face of the silencer shell (5), sound absorption cotton (10) is fixedly bonded on the side face of the sealing ring (9), and an air guide inclined plate (, the air guide inclined plate (21) is internally provided with an air inlet through hole (22), the top of an inner cavity of the silencer shell (5) is fixedly provided with an isolating layer (20), the top of the silencer shell (5) is fixedly provided with a threaded seat (13), a screw rod (12) is installed on the internal thread of the threaded seat (13), the bottom of the screw rod (12) penetrates through the silencer shell (5) and extends to the inner cavity of the silencer shell (5) and is movably provided with a connecting block (14), the bottom of the connecting block (14) is fixedly connected with a connecting plate (23), the side surface of the connecting plate (23) is fixedly connected with a connecting rod (15), the other end of the connecting rod (15) is fixedly connected with a movable silencing sheet (18), the movable silencing sheet (18) is fixedly wrapped with an intermediate sound absorption layer (17), and the outer surface of the movable silencing sheet (18) is provided with, the front of the inner cavity of the silencer shell (5) is fixedly provided with a fixed silencing sheet (16), and the front of the inner cavity of the silencer shell (5) on the right side of the connecting plate (23) is fixedly provided with a wave-shaped silencing sheet (11).

2. The non-independent integrated fan silencer according to claim 1, wherein: the middle sound absorption layer (17) is filled with superfine glass wool, and the isolation layer (20) is a polyester fiber sound absorption plate.

3. The non-independent integrated fan silencer according to claim 1, wherein: the fixed silencing sheet (16) is internally provided with a middle sound absorption layer (17) and sound absorption holes (19) which are the same as the movable silencing sheet (18).

4. The non-independent integrated fan silencer according to claim 1, wherein: the wave-shaped silencing sheet (11) is internally provided with a middle sound absorption layer (17) and sound absorption holes (19) which are the same as the movable silencing sheet (18).

5. The non-independent integrated fan silencer according to claim 1, wherein: the number of the air guide inclined plates (21) is two, and the two air guide inclined plates (21) are symmetrically distributed by taking the transverse center line of the silencer shell (5) as a symmetry axis.