CN212337405U - Sound-absorbing cotton-free silencer - Google Patents

Abstract

The utility model discloses a there is not cotton silencer of sound absorption, including shell body, interior casing setting is in the shell body, and forms the noise elimination space between shell body, the interior casing both ends, support and shell body inner wall fixed connection are passed through to interior casing both ends, all be provided with a plurality of recesses on the lateral surface of interior casing, each all be provided with the sound absorption filler in the recess, each the recess outside is provided with the isolation sheet metal, be fixed with microperforated panel on the interior casing inside wall. The utility model discloses the microperforated panel of setting up in the open end inner casing that sets up back to the import can play the effect of noise elimination, can effectually prevent that the smoke and dust from getting into and deposit with the annular dust removal board of adding.

Description

Sound-absorbing cotton-free silencer

Technical Field

The utility model relates to a silencer technical field especially relates to a cotton silencer of no sound absorption.

Background

The silencer is used for the airflow pipeline with noise transmission, and can attenuate or reflect the noise in the pipeline by using noise reduction devices such as pipelines and elbows with sound absorption linings or pipelines with suddenly changed sectional areas and other discontinuous acoustic impedances. The former is called resistive muffler, the latter is called reactive muffler, and there are also impedance compound mufflers.

The diesel generator is widely used in the production and operation of industrial and mining enterprises due to good economical efficiency and power performance, and the smoke emitted in the operation process contains a certain amount of smoke (namely, black smoke which is often seen), and the phenomenon is generated due to incomplete combustion of fuel oil. Thus, conventional ventilation exhaust mufflers, such as microporous plate mufflers and mufflers with sound absorbing fillers, are used in such environments, which is not desirable because black smoke causes clogging to occur, which only provides a temporary sound reduction.

Aiming at the problems, the sound-absorption-free cotton silencer is designed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a there is not cotton silencer of sound absorption, the utensil has the advantage of reducing the stopper, has solved black cigarette and has made its problem that the jam condition takes place to appear.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a there is not cotton silencer of sound absorption, includes shell body, interior casing setting is in the shell body, and forms the noise elimination space between shell body, the interior casing both ends through support and shell body inner wall fixed connection, all be provided with a plurality of recesses on the lateral surface of interior casing, each all be provided with the sound absorption filler in the recess, each the recess outside is provided with the isolation sheet metal, be fixed with the microperforated panel on the interior casing inside wall.

Further, shell body one end is the import, and the other end is the export, the one end that is close to the import on the interior casing is the blind end, and its one end of keeping away from the import is the open end.

Furthermore, an inward-concave annular dust separation plate is arranged at the opening end of the inner shell.

Furthermore, an isolating membrane is arranged in the middle of the annular dust-isolating plate.

Further, the thickness of the isolation sheet is 0.25 mm to 0.50 mm.

Further, the inner shell is in a regular hexahedral column shape.

Compared with the prior art, the utility model beneficial effect who has is:

1. the micro-perforated plate arranged in the inner shell at the opening end back to the inlet can play a role in silencing, and the added annular dust separation plate can effectively prevent smoke dust from entering and depositing;

when the gas with the smoke dust flows through the silencing space of the silencer, the sound can enable the isolation thin plate outside the sound absorption filler to resonate, so that the sound enters the sound absorption filler to further complete silencing, and due to the micro-vibration of the isolation thin plate, the particulate matters are difficult to deposit on the isolation thin plate, so that the silencing effect is not weakened.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.

In the drawings:

fig. 1 is the utility model provides a there is not cotton silencer of sound absorption's structural schematic diagram.

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, a there is not cotton silencer of sound absorption, including shell body 1, interior casing 2 sets up in shell body 1, and forms noise elimination space 3 between shell body 1, the interior casing 2 both ends through support 6 and shell body 1 inner wall fixed connection, all be provided with a plurality of recesses 4 on the lateral surface of interior casing 2, each all be provided with the sound absorption filler in the recess 4, each the recess 4 outside is provided with isolation sheet 5, be fixed with the microperforated panel on the 2 inside walls of interior casing.

The utility model discloses a portable electronic device, including shell body 1, the one end of shell body is import 7, and the other end is export 8, the one end that is close to import 7 on the interior casing 2 is the blind end, and its one end of keeping away from import 7 is the open end.

The open end of the inner shell 2 is provided with an inward concave annular dust-proof plate 9.

The middle of the annular dust-proof plate 9 is provided with an isolating film.

The thickness of the isolation sheet 5 is 0.25 mm to 0.50 mm, the isolation sheet can be made of ferroelectric silver plating or copper materials, and the requirements of flexibility and corrosion resistance can be met.

The inner housing 2 is in a regular hexahedral column shape.

During the use, with the device installation preset position, when taking the gaseous flow through in the noise elimination space 3 of smoke and dust from the silencer, sound can make the isolation sheet metal 5 outside the sound absorption filler 4 produce resonance, make sound get into sound absorption filler 4 and then accomplish the amortization, and because the micro-vibration of isolation sheet metal 5, make the particulate matter deposit on it hardly, make its noise cancelling effect not weaken, and the microperforated panel of setting up can play the effect of noise elimination in the open end inner casing that sets up back to the import, annular dust-proof board 9 with the interpolation can effectually prevent that the smoke and dust from getting into and deposit.

The details of the present invention are well known to those skilled in the art.

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 (6)

1. The utility model provides a there is not cotton silencer of sound absorption, its characterized in that, includes shell body (1), interior casing (2) set up in shell body (1), and form noise elimination space (3) between shell body (1), interior casing (2), support (6) and shell body (1) inner wall fixed connection are passed through at interior casing (2) both ends, all be provided with a plurality of recesses (4) on the lateral surface of interior casing (2), each all be provided with the sound absorption filler in recess (4), each recess (4) outside is provided with isolation sheet metal (5), be fixed with microperforated panel on interior casing (2) inside wall.

2. The sound absorptive cotton-free muffler of claim 1, wherein: the utility model discloses a portable air conditioner, including shell body (1), shell body (2), inlet (7), the other end are export (8), the one end that is close to inlet (7) on interior casing (2) is the blind end, and its one end of keeping away from inlet (7) is the open end.

3. The sound absorptive cotton-free muffler of claim 2, wherein: the opening end of the inner shell (2) is provided with an inward concave annular dust-proof plate (9).

4. The sound absorptive cotton-free muffler of claim 3, wherein: an isolating film is arranged in the middle of the annular dust-proof plate (9).

5. The sound absorptive cotton-free muffler of claim 1, wherein: the thickness of the isolation sheet (5) is 0.25 mm to 0.50 mm.

6. The sound absorptive cotton-free muffler of claim 1, wherein: the inner shell (2) is in a regular hexahedral column shape.

Images