CN211423027U

CN211423027U - Microporous silencer for air suction inlet of air blower

Info

Publication number: CN211423027U
Application number: CN201921717110.4U
Authority: CN
Inventors: 王渊
Original assignee: Chengdu Microcrystal Special Metal Material Co ltd
Current assignee: Chengdu Microcrystal Special Metal Material Co ltd
Priority date: 2019-10-14
Filing date: 2019-10-14
Publication date: 2020-09-04
Anticipated expiration: 2029-10-14

Abstract

The utility model provides an air-blower inlet scoop micropore silencer, including noise elimination barrel (4) that have the reposition of redundant personnel effect in the middle of having, set up air inlet micropore (2) on noise elimination barrel (4) and lay in noise absorption cotton (3) in noise elimination barrel (4), set up fan hookup flange (10) of being connected with the fan on air inlet section of thick bamboo (5), noise elimination barrel (4) upper end has upper flange (8), and noise elimination barrel (4) lower extreme has lower flange (9). Compared with the prior art, the utility model has the characteristics of noise elimination effect is good, and the frequency range of action is big, simple structure.

Description

Microporous silencer for air suction inlet of air blower

Technical Field

The utility model belongs to the technical field of metallurgy, machinery, chemical industry etc., especially, relate to an air-blower inlet scoop micropore silencer.

Background

In many industries such as metallurgy, machinery, chemical engineering and the like, a large number of blowers are widely applied as necessary production equipment in the whole production process. Noise generated by the air suction opening of the blower is troublesome for factories and environmental protection departments all the time.

The traditional method is that a straight-through impedance muffler is arranged at an air suction opening, and the muffler mainly absorbs and reduces sound due to the principle of the muffling effect, has poor muffling effect and is difficult to meet the supervision requirements of environmental protection departments generally.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to solve the defect that above-mentioned prior art exists, provide an air-blower inlet scoop silencer, can follow the size of airflow direction upward noise reduction.

The utility model adopts the following technical scheme:

a micropore silencer for an air suction inlet of an air blower is a T-shaped silencer 1, wherein the T-shaped silencer 1 is composed of an air inlet micropore 2, sound absorption cotton 3, a silencing barrel 4, an air inlet barrel 5, an upper end enclosure 6, a lower end enclosure 7, an upper flange 8, a lower flange 9 and a fan connecting flange 10.

The silencer is characterized in that air inlet micropores 2 are formed in wall bodies at two ends of the silencing barrel 4, sound absorption cotton 3 is laid inside the silencing barrel 4, the air inlet barrel 5 is connected with the silencing barrel 4 in a welding mode, a fan connecting flange 10 connected with a fan is arranged at the end of the air inlet barrel 5, an upper flange 8 is arranged at the upper end of the silencing barrel 4, an upper sealing head 6 is installed on the upper flange 8, a lower flange 9 is arranged at the lower end of the silencing barrel 4, and a lower sealing head 7 is installed on the lower flange 9.

The utility model has the advantages that:

the utility model provides an air-blower inlet scoop micropore silencer falls in the distance that thereby changes the sound wave propagation with the direction that changes the sound wave propagation, falls with micropore filtering's mode simultaneously and makes an uproar to reach the good mesh of making an uproar of falling.

Drawings

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

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

fig. 3 is a schematic diagram of a resistive muffler in the prior art.

In the figure: 1-T-shaped silencer, 2-air inlet micropores, 3-sound absorption cotton, 4-noise elimination cylinder, 5-air inlet cylinder, 6-upper end enclosure, 7-lower end enclosure, 8-upper flange, 9-lower flange and 10-fan connecting flange.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention are clearly and completely described below, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

As shown in fig. 1-2, the utility model discloses a microporous silencer of air blower inlet scoop, this silencer is T shape silencer 1, T shape silencer 1 comprises inlet air micropore 2, sound absorption cotton 3, noise elimination barrel 4, an air inlet section of thick bamboo 5, upper cover 6, low head 7, upper flange 8, lower flange 9, fan hookup flange 10.

The utility model discloses an air-blower inlet scoop micropore silencer is according to the sound wave propagation along with the increase of distance and the decay and the relation of sound wave frequency and wavelength and designs, and is different with ordinary impedance silencer, the utility model discloses an air intake 5 of T shape silencer sets up at the middle part of silencer, and the air inlet of air-blower gets into T shape silencer 1's noise elimination barrel 4 after bending through the micropore 2 that admits air on the T shape silencer in, bends again and get into T shape silencer 1's admission cylinder 5, the entry of air-blower at last again.

The original blower noise is directly transmitted to the air inlet 101 from the inlet connecting flange 401 of the common silencer shown in fig. 3 (in the figure, 101 is the air inlet, 201 is the silencer cylinder, 301 is the sound absorption cotton, and 401 is the connecting flange), and only a part of diffracted sound waves are absorbed by the sound absorption cotton 301, so that part of the noise is reduced. Most of the noise is directly radiated to the atmosphere through the hollow portion of the muffler cylinder 201.

The utility model discloses a change of air inlet mode makes the propagation path of air-blower noise take place great change.

The utility model discloses the micropore T shape silencer that constitutes is totally different with ordinary silencer sound wave propagation mode. The sound wave generated by the blower enters the silencing cylinder 4 through the air inlet cylinder 5, the propagation direction of the sound wave in the silencing cylinder 4 is changed, the sound wave is not directly radiated out from the micropores along with the change of the direction of the air flow, but is reflected for multiple times on the arc-shaped wall surface of the silencing cylinder 4 of the micropore T-shaped silencer, and only a small part of noise leaks out under the combined action of air inlet micropore filtering and sound absorption of silencing cotton, so that a good noise reduction effect is achieved.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. A microporous silencer for an air suction inlet of an air blower is characterized in that the silencer is a T-shaped silencer (1), and the T-shaped silencer (1) is composed of air inlet micropores (2), sound absorption cotton (3), a silencing cylinder body (4), an air inlet cylinder (5), an upper end enclosure (6), a lower end enclosure (7), an upper flange (8), a lower flange (9) and a fan connecting flange (10);

the silencer is characterized in that air inlet micropores (2) are formed in wall bodies at two end portions of the silencing barrel body (4), sound absorption cotton (3) is laid inside the silencing barrel body (4), an air inlet barrel (5) is connected with the silencing barrel body (4) in a welding mode, a fan connecting flange (10) connected with a fan is arranged at the end portion of the air inlet barrel (5), an upper flange (8) is arranged at the upper end portion of the silencing barrel body (4), an upper sealing head (6) is installed on the upper flange (8), a lower flange (9) is arranged at the lower end portion of the silencing barrel body (4), and a lower sealing head (7) is installed on the.