CN213039539U

CN213039539U - Silencer for steam and fan pipeline

Info

Publication number: CN213039539U
Application number: CN202021846767.3U
Authority: CN
Inventors: 陈根华; 陈宏达; 乔健; 陈宏清
Original assignee: Lianyungang Bond Mechanical Equipment Co ltd
Current assignee: Lianyungang Bond Mechanical Equipment Co ltd
Priority date: 2020-08-31
Filing date: 2020-08-31
Publication date: 2021-04-23
Anticipated expiration: 2030-08-31

Abstract

The utility model discloses a silencer used on steam and fan pipelines, which comprises an outer shell, wherein the left end of the outer shell is an inlet which is connected with a primary impedance silencer, the right end of the primary impedance silencer is a baffle piece silencing section, the right end of the baffle piece silencing section is a honeycomb silencing section, and the right end of the honeycomb silencing section is connected with an outlet; an annular silencing interlayer is arranged on the inner wall of the outer shell; the utility model discloses a silencer can reduce the noise and be greater than or equal to 40 decibels, and the windage wind pressure is less, the utility model discloses the friction loss of air reduces the noise in the zinc-plated punching a hole on the panel, and the acoustic resistance of aperture is inversely proportional to the square of the aperture, and the aperture is the smaller the acoustic resistance is big more, and simple structure falls the frequency bandwidth of making an uproar.

Description

Silencer for steam and fan pipeline

Technical Field

The utility model belongs to the technical field of the silencer, concretely relates to silencer that is used for steam and fan pipeline to go up to use.

Background

The fan is a general mechanical device, and the application range is wide, and the fan cannot be separated in the production of various industries such as electric power, mines, machinery, metallurgy, chemical engineering and the like. Noise generated by the operation of a fan is often a source of health concerns for workers and environmental disturbances. Especially, the aerodynamic noise radiated by the air inlet and the air outlet of the fan adjacent to the living area is a main factor for polluting the environment, forms public nuisance and is one of the main objects for controlling the noise pollution in the industrial department of China. The free mixing of steam and water (liquid) of the steam equipment generates strong vibration and noise, and also causes noise, and the emission of the noise does not meet the noise standard of industrial enterprises.

Disclosure of Invention

An object of the utility model is to provide a silencer that is used for steam and fan pipeline to go up usefulness.

In order to realize the purpose, the utility model discloses a technical scheme as follows:

a silencer used on a steam and fan pipeline comprises an outer shell, wherein the left end of the outer shell is an inlet which is connected with a primary impedance silencer, the right end of the primary impedance silencer is a baffle piece silencing section, the right end of the baffle piece silencing section is a honeycomb silencing section, and the right end of the honeycomb silencing section is connected with an outlet; and an annular silencing interlayer is arranged on the inner wall of the outer shell.

Preferably, the primary impedance noise damper is cylindrical, the right end of the cylindrical impedance noise damper is a blocking plate, and a plurality of small holes are formed in the cylindrical peripheral wall.

Preferably, the sound-absorbing section of the sound-absorbing sheet is composed of a plurality of sound-absorbing layers, and the sound-absorbing layers are made of sound-absorbing cotton or sound-absorbing filler.

Preferably, the honeycomb silencing section is shaped like a disk, a plurality of through holes are formed in the honeycomb silencing section, and sound absorbing cotton or silencing filler is arranged on the disk.

Preferably, the outer housing is provided with a water outlet valve port.

Preferably, the annular sound-damping sandwich comprises a sandwich panel, and sound-damping filler is arranged between the sandwich panel and the inner wall of the outer shell.

Preferably, the inlet is provided with an inlet flange, the outlet is provided with an outlet flange, and the outlet is connected with the outer shell through an outlet short circuit.

The technical scheme can obtain the following beneficial effects:

the utility model discloses a silencer can reduce the noise and be greater than or equal to 40 decibels, and the windage wind pressure is less, the utility model discloses the friction loss of air reduces the noise in the zinc-plated punching a hole on the panel, and the acoustic resistance of aperture is inversely proportional to the square of the aperture, and the aperture is the smaller the acoustic resistance is big more, and simple structure falls the frequency bandwidth of making an uproar. The sound waves are transmitted among the multiple sound-proof layers and are subjected to friction and resistance, and the sound energy is converted into heat energy to be lost, so that the aims of eliminating the noise and reducing the noise are fulfilled.

The utility model discloses a cubic falls to the noise and makes an uproar, changes the transmission route of noise respectively, and is fine to the noise treatment.

Drawings

Fig. 1 is a schematic view of a muffler structure.

FIG. 2 is a view showing the structure of the direction A-A.

FIG. 3 is a view showing a structure from the B-B direction.

Fig. 4 is an enlarged view at B.

In the figure:

in the figure: 1. an outlet; 2. the outlet is short-circuited; 3. a cellular noise elimination section; 4. a baffle silencing section; 5. an outer housing; 6. an annular sound-deadening interlayer; 7. the noise-damping structure comprises a first-level impedance noise-damping body, 8, an inlet, 9, a sandwich panel, 10, a noise-damping layer, 11, through holes, 12, a sandwich panel, 13 and noise-damping filler.

Detailed Description

The invention will be further explained with reference to the drawings:

as shown in fig. 1-4, a silencer used for steam and blower pipelines comprises an outer shell 5, wherein the left end of the outer shell is provided with an inlet 8, the inlet 8 is connected with a primary impedance silencer 7, the right end of the primary impedance silencer 7 is provided with a baffle silencing section 4, the right end of the baffle silencing section 4 is provided with a honeycomb silencing section 3, and the right end of the honeycomb silencing section 3 is connected with an outlet 1; and an annular silencing interlayer 6 is arranged on the inner wall of the outer shell 5. The primary impedance noise elimination body 7 is cylindrical, the right end of the cylindrical shape is provided with a blocking plate, and a plurality of small holes are formed in the cylindrical peripheral wall; the sound-absorbing sheet silencing section 4 is composed of a plurality of sound-absorbing layers, and the sound-absorbing layer 10 is made of sound-absorbing cotton or silencing filler. The honeycomb silencing section 3 is in a disc shape, a plurality of through holes 11 are formed in the honeycomb silencing section, and sound absorbing cotton or silencing filler is arranged on the disc shape. The outer shell 5 is provided with a water outlet valve port 9. The annular silencing interlayer 6 comprises an interlayer panel 12, and silencing filler 13 is arranged between the interlayer panel 12 and the inner wall of the outer shell 5. Import 8 adopts the import flange, export 1 adopts the export flange, and export and shell body 5 are connected through export short circuit 2.

Example (b):

the silencer is directly arranged on the open inlet pipe and the open outlet pipe of the steel plate fan through the inlet flange, and can also be connected in series on the inlet pipeline and the outlet pipeline, so that the silencer is allowed to be arranged vertically or horizontally, but is preferably close to the fan. When the silencer is installed, the elastic pads such as rubber plates and the like are used on the surface of the connecting flange of the silencer to cut off solid sound transmission and ensure air tightness, the mass of the silencer body is not directly supported on a fan so as not to cause deformation, a proper support can be used for supporting the mass of the silencer shell or the flange part, necessary measures such as corresponding sound insulation, sound absorption and the like are adopted according to specific conditions when the silencer is installed so as to reduce the radiation noise of the shell and achieve the purpose of comprehensively controlling the noise, and an outlet protective net and a windproof rain cap are installed at an outlet.

In fan exhaust noise entered into the one-level impedance noise elimination body 7 of silencer through the import flange, the noise realized making an uproar in cylindric for the first step, then the noise got into shell body 5 inside through cylindric a plurality of apertures on the surface, the noise reentrant hinders piece noise reduction section 4, and the sound cotton or the amortization filler of inhaling on the multilayer noise damping layer weakens the noise, and the noise enters into honeycomb noise reduction section 3 at last, realizes further making an uproar through a plurality of through-hole 11.

Wherein, the outlet valve port 9 of the outer shell 5 can drain the liquid in the shell to prevent the liquid from soaking the inner interlayer panel in the shell.

The above description is the preferred embodiment of the present invention, and for those skilled in the art, modifications of the various equivalent forms of the present invention are within the scope of the appended claims of the present application without departing from the principle of the present invention.

Claims

1. The utility model provides a silencer that is used for steam and fan pipeline to go up usefulness which characterized in that: the honeycomb noise-reduction damper comprises an outer shell (5), wherein the left end of the outer shell is provided with an inlet (8), the inlet (8) is connected with a primary impedance noise-reduction body (7), the right end of the primary impedance noise-reduction body (7) is provided with a resistance sheet noise-reduction section (4), the right end of the resistance sheet noise-reduction section (4) is provided with a honeycomb noise-reduction section (3), and the right end of the honeycomb noise-reduction section (3) is connected with an outlet (1); and an annular silencing interlayer (6) is arranged on the inner wall of the outer shell (5).

2. The muffler for steam and blower ducts of claim 1, further comprising: the primary impedance noise elimination body (7) is cylindrical, the right end of the cylindrical shape is a blocking plate, and a plurality of small holes are formed in the cylindrical peripheral wall.

3. The muffler for steam and blower ducts of claim 1, further comprising: the sound-absorbing sheet silencing section (4) is composed of a plurality of sound-absorbing layers, and the sound-absorbing layers (10) are made of sound-absorbing cotton or silencing filler.

4. The muffler for steam and blower ducts of claim 1, further comprising: the honeycomb silencing section (3) is disc-shaped, a plurality of through holes (11) are formed in the honeycomb silencing section, and sound absorbing cotton or silencing filler is arranged on the disc-shaped honeycomb silencing section.

5. The muffler for steam and blower ducts of claim 1, further comprising: the outer shell (5) is provided with a water outlet valve port (9).

6. The muffler for steam and blower ducts of claim 1, further comprising: the annular silencing interlayer (6) comprises an interlayer panel (12), and silencing filler (13) is arranged between the interlayer panel (12) and the inner wall of the outer shell (5).

7. The muffler for steam and blower ducts of claim 1, further comprising: import (8) adopt the import flange, export (1) adopts the export flange, and export and shell body (5) are connected through export short circuit (2).