CN218717767U

CN218717767U - Noise processing equipment of through centrifugal fan

Info

Publication number: CN218717767U
Application number: CN202222956600.8U
Authority: CN
Inventors: 王强
Original assignee: Sichuan Derui Star Environmental Technology Co ltd
Current assignee: Sichuan Derui Star Environmental Technology Co ltd
Priority date: 2022-11-07
Filing date: 2022-11-07
Publication date: 2023-03-24
Anticipated expiration: 2032-11-07

Abstract

The utility model discloses a lead to centrifugal fan noise treatment equipment relates to centrifugal fan technical field, including sound-proof box and muffler, the surface of sound-proof box and the inboard fixed mounting of muffler, sound-proof box includes the air-supply line, the surface of air-supply line and the inboard fixed mounting of muffler, the fixed surface of air-supply line is pegged graft and is had the box, the one end fixedly connected with centrifugal fan of air-supply line, the horizontal mount of inner wall fixedly connected with of box, the inboard of horizontal mount and centrifugal fan's back fixed connection, the muffler includes external aluminum hull, the inboard of external aluminum hull and the outer wall fixed mounting of air-supply line. The utility model discloses a horizontal mount fixes centrifugal fan in the box, and when centrifugal fan started, horizontal mount let it can not transversely rock, and vertical shock attenuation attenuator carries out the energy-absorbing to vertical rocking of centrifugal fan simultaneously, makes centrifugal fan can not send the produced noise of vibrations when the operation.

Description

Noise processing equipment of through centrifugal fan

Technical Field

The utility model relates to a centrifugal fan technical field, concretely relates to lead to centrifugal fan noise treatment equipment.

Background

The centrifugal fan is a driven fluid machine which increases the pressure of gas and discharges the gas by means of input mechanical energy. Centrifugal fans are widely used in factories, mines, tunnels, cooling towers, vehicles, ships and buildings for ventilation, dust removal and cooling; ventilation and draught of boilers and industrial furnaces; cooling and ventilation in air conditioning equipment and household appliances; drying and selecting grains; wind tunnel wind source and air cushion boat inflation and propulsion.

The following problems exist in the prior art:

the existing noise treatment equipment for the centrifugal fan is poor in noise treatment effect, noise caused by vibration of the centrifugal fan is not considered, and meanwhile, the cost is high; and the existing noise treatment equipment of the ventilation centrifugal fan cannot adapt to work at a higher temperature, and meanwhile, the heat dissipation problem of the centrifugal fan is not considered when noise is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a lead to centrifugal fan noise treatment equipment to solve the problem that proposes in the above-mentioned background art.

In order to solve the technical problem, the utility model discloses the technical scheme who adopts is:

the utility model provides a lead to centrifugal fan noise treatment equipment, includes sound-proof box and muffler, the surface of sound-proof box and the inboard fixed mounting of muffler, sound-proof box includes the air-supply line, the surface of air-supply line and the inboard fixed mounting of muffler, the fixed surface of air-supply line is pegged graft and is had the box, the one end fixedly connected with centrifugal fan of air-supply line, the horizontal mount of inner wall fixedly connected with of box, the inboard of horizontal mount and centrifugal fan's back fixed connection, the muffler includes external aluminum hull, the inboard of external aluminum hull and the outer wall fixed mounting of air-supply line, the fixed surface of external aluminum hull installs the PVC membrane, the inside threaded connection of external aluminum hull has fixing bolt, fixing bolt's tip and the inside threaded connection of air-supply line, the fixed grafting in top of external aluminum hull has the hush pipe.

The utility model discloses technical scheme's further improvement lies in: the sound insulation cotton I is fixedly connected to the inside of the box body, through holes are formed in the two sides of the box body, and silencing non-woven fabrics are fixedly mounted on the inner walls of the through holes.

The utility model discloses technical scheme's further improvement lies in: the inner wall fixedly connected with vertical shock attenuation attenuator of box, the tip of vertical shock attenuation attenuator and centrifugal fan's fixed surface are connected, centrifugal fan's output fixed mounting has the metal mesh.

The utility model discloses technical scheme's further improvement lies in: the top of the box body is provided with heat dissipation holes, the inner walls of the heat dissipation holes are fixedly connected with grids, and ventilation fans are fixedly mounted on the surfaces of the grids.

The utility model discloses technical scheme's further improvement lies in: the bottom of the silencing pipe is fixedly connected with the top of the air inlet pipe, honeycomb holes are formed in the top of the silencing pipe, and a sound insulation cotton II is fixedly mounted inside the silencing pipe.

The utility model discloses technical scheme's further improvement lies in: the inner wall of the silencing pipe is fixedly provided with a high-temperature-resistant tinfoil, the inner wall of the silencing pipe is fixedly provided with a noise reduction metal net, the outer wall of the silencing pipe is fixedly provided with a resonator, and the bottom of the resonator is fixedly connected with the inner wall of the external aluminum shell.

Owing to adopted above-mentioned technical scheme, the utility model discloses relative prior art, the technological progress who gains is:

1. the utility model provides a lead to centrifugal fan noise treatment facility, adopt the sound-proof box, the box, soundproof cotton one, the through-hole, the amortization non-woven fabrics, horizontal mount, vertical shock attenuation attenuator, centrifugal fan, the metal mesh, the air-supply line, the louvre, the grid, cooperation between the ventilating fan, fix centrifugal fan in the box through horizontal mount, when centrifugal fan starts, horizontal mount lets it can not transversely rock, vertical shock attenuation attenuator is to the vertical energy-absorbing that rocks of centrifugal fan simultaneously, make centrifugal fan can not send the produced noise of vibrations when the operation, simultaneously at the metal mesh of centrifugal fan impeller export setting, the laminar flow boundary layer that can make the blade converts the turbulent flow boundary layer into immediately, air velocity and pressure energy behind the net can become evenly rapidly, thereby further reduce the vortex district greatly and further reduce noise, and the molding of through-hole is the form of big-endian, the noise sound wave that centrifugal fan produced kick-backs many times in the through-hole, and absorb through the amortization non-woven fabrics, thereby can not the outside be disturbed by the noise, the soundproof cotton of box inside further absorbs the noise when the operation, and blow off the heat of the heat for a long time, the inside heat transfer of ventilating fan, the box is carried out the heat.

2. The utility model provides a lead to centrifugal fan noise treatment equipment, adopt the muffler, external aluminum hull, the hush pipe, soundproof cotton two, honeycomb holes, the metal mesh of making an uproar falls, high temperature resistant tinfoil, cooperation between fixing bolt and the resonator, fix the structure in air-supply line department through external aluminum hull and fixing bolt, it makes an uproar to carry out the amortization from the air-supply line department, the honeycomb holes at hush pipe top shunts the air-supply line, make the speed of air-supply line weaken can not send sharp-pointed wind noise, the metal mesh of making an uproar falls in the hush pipe and makes an uproar to the air-supply line of reposition of redundant personnel, reduce the resistance of windward side, the soundproof cotton two plays outmost noise reduction sound of making an uproar of falling of amortization simultaneously, hush pipe vibrations noise generation is simultaneously for avoiding when the air-supply, the resonator at hush pipe outer wall will shake produced stress and absorb, thereby make the muffler can not take place great vibrations, thereby solve vibrations and produce the noise, and guarantee that it can adapt to the higher temperature's operational environment at the high temperature resistant tinfoil of hush pipe inside at hush pipe, while at the PVC membrane on external aluminum hull surface carries out fire-retardant protection effectively, dampproofing, the amortization.

Drawings

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

FIG. 2 is a sectional view of the structure of the present invention;

FIG. 3 is a sectional view of the sound-proof box of the present invention;

fig. 4 is a structural sectional view of the muffler of the present invention.

In the figure: 1. a sound insulation box; 11. a box body; 12. sound insulation cotton I; 13. a through hole; 14. a sound-deadening nonwoven fabric; 15. a transverse fixing frame; 16. a vertical shock absorbing damper; 17. a centrifugal fan; 18. a metal mesh; 19. an air inlet pipe; 110. heat dissipation holes; 111. a grid; 112. a ventilating fan; 2. a muffler; 21. an external aluminum shell; 22. a sound-deadening tube; 23. sound insulation cotton II; 24. a honeycomb hole; 25. a noise reduction metal mesh; 26. high temperature resistant tin foil; 27. fixing the bolt; 28. a resonator; 29. PVC film.

Detailed Description

The present invention will be described in further detail with reference to the following examples:

example 1

As shown in fig. 1-4, the utility model provides a lead to centrifugal fan noise treatment equipment, including sound-proof box 1 and muffler 2, sound-proof box 1's the surface and the inboard fixed mounting of muffler 2, sound-proof box 1 includes air-supply line 19, the surface of air-supply line 19 and the inboard fixed mounting of muffler 2, air-supply line 19's fixed surface is pegged graft and is had box 11, air-supply line 19's one end fixedly connected with centrifugal fan 17, the inner wall fixedly connected with transverse fixing frame 15 of box 11, the inboard of transverse fixing frame 15 and centrifugal fan 17's back fixed connection, muffler 2 includes external aluminum hull 21, the inboard of external aluminum hull 21 and the outer wall fixed mounting of air-supply line 19, the fixed surface of external aluminum hull 21 installs PVC membrane 29, the internal thread of external aluminum hull 21 is connected with fixing bolt 27, fixing bolt 27's tip and the internal thread of air-supply line 19 are external, the fixed grafting of top of aluminum hull 21 has hush pipe 22.

In this embodiment, the air intake is silenced from the end portion by the silencer 2, and the silencer 2 is prevented from emitting noise due to vibration, the high temperature resistant tinfoil 26 built in the silencer 2 enables the silencer 2 to be suitable for different working environments, and the sound insulation box 1 treats the noise generated by the operation of the centrifugal fan 17, and the ventilation fan 112 can exchange heat in the sound insulation box 1 to prevent the temperature in the sound insulation box 1 from being high.

Example 2

As shown in fig. 1-4, on the basis of embodiment 1, the utility model provides a technical solution: preferably, the first soundproof cotton 12 is fixedly connected to the inside of the box 11, the through holes 13 are formed in two sides of the box 11, the silencing non-woven fabric 14 is fixedly mounted on the inner wall of the through holes 13, the vertical damping damper 16 is fixedly connected to the inner wall of the box 11, the end of the vertical damping damper 16 is fixedly connected to the surface of the centrifugal fan 17, the metal mesh 18 is fixedly mounted at the output end of the centrifugal fan 17, the heat dissipation holes 110 are formed in the top of the box 11, the grids 111 are fixedly connected to the inner wall of the heat dissipation holes 110, and the ventilating fans 112 are fixedly mounted on the surfaces of the grids 111.

In this embodiment, the centrifugal fan 17 is fixed in the box 11 through the horizontal fixing frame 15, when the centrifugal fan 17 is started, the horizontal fixing frame 15 prevents the centrifugal fan 17 from horizontally shaking, and the vertical shock absorption damper 16 absorbs energy for vertically shaking the centrifugal fan 17, so that the centrifugal fan 17 does not generate noise generated by shaking in operation, and meanwhile, the metal mesh 18 is arranged at the impeller outlet of the centrifugal fan 17, so that the laminar boundary layer of the blade can be immediately converted into a turbulent boundary layer, the air velocity and pressure after the mesh can be rapidly and uniformly changed, the vortex area can be greatly reduced, so that the noise can be further reduced, the shape of the through hole 13 is in a form with a large inner opening, the noise sound wave generated by the centrifugal fan 17 rebounds in the through hole 13 for multiple times, and is absorbed through the silencing non-woven fabric 14, so that the outside cannot be interfered by noise, meanwhile, the soundproof cotton-12 in the box 11 further absorbs the noise, and when the centrifugal fan 17 is operated for a long time, the ventilation fan 112 in the top radiating hole 110 exchanges heat, and blows out the heat in the box 11.

Example 3

As shown in fig. 1-4, on the basis of embodiment 1, the utility model provides a technical solution: preferably, the bottom of the silencing tube 22 is fixedly connected with the top of the air inlet tube 19, the top of the silencing tube 22 is provided with honeycomb holes 24, the interior of the silencing tube 22 is fixedly provided with a soundproof cotton II 23, the inner wall of the silencing tube 22 is fixedly provided with a high-temperature-resistant tin foil 26, the inner wall of the silencing tube 22 is fixedly provided with a noise reduction metal mesh 25, the outer wall of the silencing tube 22 is fixedly provided with a resonator 28, and the bottom of the resonator 28 is fixedly connected with the inner wall of the external aluminum shell 21.

In this embodiment, the structure is fixed at the air inlet pipe 19 by the external aluminum shell 21 and the fixing bolt 27, the noise reduction is performed from the air inlet, the honeycomb holes 24 at the top of the silencer pipe 22 shunt the inlet air, so that the inlet air speed is reduced and no sharp wind noise is generated, the noise reduction metal net 25 in the silencer pipe 22 reduces the noise of the shunted inlet air, the resistance of the windward side is reduced, the sound insulation cotton two 23 in the silencer pipe 22 plays the outermost layer to reduce noise, and in order to avoid noise generation caused by vibration of the silencer pipe 22 during air inlet, the resonator 28 on the outer wall of the silencer pipe 22 absorbs the stress generated by vibration, so that the silencer pipe 22 does not generate large vibration, thereby solving the problem of noise generation caused by vibration, and the high temperature resistant tin foil 26 in the silencer pipe 22 ensures that the silencer can adapt to the working environment at a higher temperature, and the PVC film 29 on the surface of the external aluminum shell 21 effectively protects the silencer 2, thereby preventing flame and preventing moisture.

The working principle of the noise treatment device with the centrifugal fan will be described in detail below.

As shown in fig. 1-4, the air intake is silenced from the end part by the silencer 2, and simultaneously the silencer 2 is prevented from generating noise due to vibration, the external aluminum shell 21 and the fixing bolt 27 fix the structure at the air intake pipe 19, and the noise is silenced and reduced from the air intake, the honeycomb holes 24 at the top of the silencer 22 shunt the air intake, so that the air intake speed is reduced and sharp wind noise is not generated, the noise reduction metal net 25 in the silencer 22 reduces the noise of the shunted air intake, so that the resistance of the windward side is reduced, meanwhile, the soundproof cotton two 23 in the silencer 22 plays the outermost layer to reduce noise and absorb sound, and simultaneously, in order to prevent the silencer 22 from generating noise due to vibration during air intake, the resonator 28 on the outer wall of the silencer 22 absorbs the stress generated by vibration, so that the silencer 22 does not generate large vibration, thereby solving the noise generated by vibration, the high temperature resistant tin foil 26 in the silencer 2 enables the silencer 2 to be suitable for different working environments, the sound insulation box 1 processes noise generated by the operation of the centrifugal fan 17, the transverse fixing frame 15 fixes the centrifugal fan 17 in the box body 11, when the centrifugal fan 17 is started, the transverse fixing frame 15 prevents the centrifugal fan 17 from transversely shaking, meanwhile, the vertical shock absorption damper 16 absorbs energy for the vertical shaking of the centrifugal fan 17, so that the centrifugal fan 17 cannot generate noise generated by shaking in operation, meanwhile, the metal net 18 arranged at the outlet of the impeller of the centrifugal fan 17 can immediately convert a laminar flow boundary layer of a blade into a turbulent flow boundary layer, the air flow velocity and the pressure after the net can be rapidly and uniformly changed, a vortex area is greatly reduced, so that the noise is further reduced, the shape of the through hole 13 is in a form of large inside and small outside, noise sound waves generated by the centrifugal fan 17 rebound in the through hole 13 for multiple times and are absorbed through the sound absorption of the non-woven fabric 14, thereby can not let the outside disturbed by the noise, the noise is further absorbed and is handled with sound insulation cotton 12 of box 11 inside simultaneously, and for avoiding the temperature in sound insulation box 1 to be higher, the inside heat transfer is carried out to ventilation fan 112 in the top louvre 110, blows off box 11 with the heat of inside.

The present invention has been described in detail with reference to the above general description, but it will be apparent to one of ordinary skill in the art that modifications and improvements can be made to the invention. Therefore, modifications or improvements without departing from the spirit of the invention are within the scope of the invention.

Claims

1. The utility model provides a logical centrifugal fan noise treatment equipment, includes sound-proof box (1) and muffler (2), its characterized in that: the surface of the sound insulation box (1) is fixedly arranged on the inner side of the silencer (2);

the sound insulation box (1) comprises an air inlet pipe (19), the surface of the air inlet pipe (19) is fixedly installed on the inner side of the silencer (2), a box body (11) is fixedly inserted into the surface of the air inlet pipe (19), one end of the air inlet pipe (19) is fixedly connected with a centrifugal fan (17), the inner wall of the box body (11) is fixedly connected with a transverse fixing frame (15), and the inner side of the transverse fixing frame (15) is fixedly connected with the back side of the centrifugal fan (17);

the silencer (2) comprises an external aluminum shell (21), the inner side of the external aluminum shell (21) is fixedly installed on the outer wall of the air inlet pipe (19), a PVC (polyvinyl chloride) film (29) is fixedly installed on the surface of the external aluminum shell (21), the internal thread of the external aluminum shell (21) is connected with a fixing bolt (27), the end of the fixing bolt (27) is connected with the internal thread of the air inlet pipe (19), and a silencing pipe (22) is fixedly inserted into the top of the external aluminum shell (21).

2. The apparatus according to claim 1, wherein: the sound insulation cotton box is characterized in that a sound insulation cotton I (12) is fixedly connected to the inside of the box body (11), through holes (13) are formed in two sides of the box body (11), and silencing non-woven fabrics (14) are fixedly mounted on the inner walls of the through holes (13).

3. The apparatus according to claim 1, wherein: the damping device is characterized in that the inner wall of the box body (11) is fixedly connected with a vertical damping damper (16), the end part of the vertical damping damper (16) is fixedly connected with the surface of the centrifugal fan (17), and the output end of the centrifugal fan (17) is fixedly provided with a metal net (18).

4. A centrifugal fan noise treatment apparatus according to claim 3, wherein: heat dissipation hole (110) have been seted up at the top of box (11), the inner wall fixedly connected with grid (111) of heat dissipation hole (110), the fixed surface of grid (111) installs ventilating fan (112).

5. The apparatus according to claim 1, wherein: the bottom of the silencing pipe (22) is fixedly connected with the top of the air inlet pipe (19), honeycomb holes (24) are formed in the top of the silencing pipe (22), and a second soundproof cotton (23) is fixedly mounted inside the silencing pipe (22).

6. The apparatus according to claim 1, wherein: the noise reduction device is characterized in that a high-temperature-resistant tin foil (26) is fixedly mounted on the inner wall of the noise reduction tube (22), a noise reduction metal net (25) is fixedly mounted on the inner wall of the noise reduction tube (22), a resonator (28) is fixedly mounted on the outer wall of the noise reduction tube (22), and the bottom of the resonator (28) is fixedly connected with the inner wall of the external aluminum shell (21).