CN202348379U

CN202348379U - U-type exhaust pipe silencer

Info

Publication number: CN202348379U
Application number: CN2011203222481U
Authority: CN
Inventors: 艾刚; 涂定国
Original assignee: CHONGQING BEIBEI DISTRICT FENGHUO MACHINERY MANUFACTURING Co Ltd
Current assignee: CHONGQING BEIBEI DISTRICT FENGHUO MACHINERY MANUFACTURING Co Ltd
Priority date: 2011-08-30
Filing date: 2011-08-30
Publication date: 2012-07-25
Anticipated expiration: 2021-08-30

Abstract

The utility model relates to the technical field of silencers and particularly provides a U-type exhaust pipe silencer with good noise removal effect. The U-type exhaust pipe silencer comprises a silencer body, an air inlet pipe and an exhaust pipe. The inside of the silencer body is sequentially separated into a cavity I, a cavity II and a cavity III through separating plates along the air inlet direction. The exhaust end of the air inlet pipe extends into the cavity II to be communicated with the cavity II, the cavity II is communicated with the cavity I through a pipe II, the cavity I is communicated with the cavity III through a pipe I, and the air inlet end of the exhaust pipe is communicated with the cavity III. The exhaust pipe is of U type and penetrates through the cavity II from the cavity III to extend to the cavity I. After turning, the exhaust pipe sequentially penetrates through the cavity II, the cavity III and a rear end cover to extend out of the silencer body. The three buffering cavities are arranged to enable air flows to be buffered sufficiently. In addition, due to the sequence for the airflows to pass through the three buffering cavities, the airflows can collide with walls of the cavities for many times, and silencing effect is improved. The exhaust pipe is of U type, near axial waves can perform absorption and reflection at the bend position, and energy of the near axial waves also can be converted to energy of oblique waves in turning around to be absorbed easily.

Description

U type outlet pipe silencing apparatus

Technical field

The utility model relates to the silencing apparatus technical field.

Background technique

Device such as internal-combustion engine, air compressor, the air-flow that its when operation produces can send huge noise, therefore, needs silencing apparatus to eliminate air power noise, stops sound transmission and allows the air communication mistake.

But the effect that present silencing apparatus abates the noise is relatively poor.

The model utility content

In view of this, the purpose of the utility model provides a kind of better U type outlet pipe silencing apparatus of noise effects of eliminating.

The purpose of the utility model is achieved in that U type outlet pipe silencing apparatus; Comprise muffler body, suction tude and outlet pipe, said muffler body inside is divided into chamber I, chamber II and chamber III along airintake direction by dividing plate successively, and the exhaust end of said suction tude stretches in the chamber II and with chamber II and is communicated with; Said chamber II is communicated with through pipe II with chamber I; Chamber I is communicated with through pipe I with chamber III, and the inlet end of said outlet pipe is communicated with chamber III, and said outlet pipe is the U type; It extends to chamber I by chamber III through chamber II, extends outside the muffler body through chamber II, chamber III and rear end cover successively again after curving.

Further, said muffler body comprises inner core, urceolus, front cover and rear end cover, is placed in the urceolus in the said inner core, is filled with the noise reduction layer between inner core and the urceolus, and front cover and rear end cover are arranged at the two ends of urceolus respectively.

Further, said inner core is netted.

Further, said noise reduction layer is the glass felt.

The beneficial effect of the utility model is: 3 buffer chamber are set, air-flow is fully cushioned, and through the setting to 3 buffer chamber overcurrent orders, air-flow is repeatedly bumped with chamber wall, increase the noise elimination effect; Outlet pipe is the U type, and nearly axial wave can absorb and reflect in the elbow, and the energy of nearly axial wave also can change the energy of oblique wave into and be absorbed easily when turning round.In further technological scheme, said muffler body comprises inner core and urceolus, is filled with the noise reduction layer between inner core and the urceolus; Said inner core is netted, is distributed with a plurality of apertures on it, and these apertures can let sound wave pass through; Let the noise reduction layer absorb sound wave, said noise reduction layer also has heat insulation effect.

Description of drawings

For the purpose, technological scheme and the advantage that make the utility model is clearer, will combine accompanying drawing that the utility model is done further to describe in detail below:

Fig. 1 shows U type outlet pipe acoustic wave filter structure schematic representation.

Embodiment

Below will carry out detailed description to the preferred embodiment of the utility model.

Referring to Fig. 1; The U type outlet pipe silencing apparatus of present embodiment comprises muffler body 1, suction tude 2 and outlet pipe 3, and said muffler body 1 comprises inner core 11, urceolus 12, front cover 13 and rear end cover 14; Be placed in the urceolus 12 in the said inner core 11; Be filled with noise reduction layer 15 between inner core 11 and the urceolus 12, preferable, said noise reduction layer 15 is the glass felt; Front cover 13 and rear end cover 14 are arranged at the two ends of urceolus 12 respectively, are densely covered with a plurality of apertures on the said inner core 11, are netted.

Said muffler body 1 inside is divided into chamber I7, chamber II8 and chamber III9 along airintake direction by dividing

plate

4,5 successively; The exhaust end of said suction tude 2 stretches in the chamber II8 and with chamber II8 and is communicated with; Said chamber II8 is communicated with through pipe II20 with chamber I7; Chamber I 7 is communicated with through pipe I10 with chamber III9, and the inlet end of said outlet pipe 3 is communicated with chamber III9.

Said outlet pipe 3 is the U type, and it extends to chamber I7 by chamber III9 through chamber II8, extends outside the muffler body 1 through chamber II8, chamber III9 and rear end cover 14 successively again after curving.

What the above was merely the utility model preferably is not limited to the utility model, and obviously, those skilled in the art can carry out various changes and modification and not break away from the spirit and the scope of the utility model the utility model.Like this, belong within the scope of the utility model claim and equivalent technologies thereof if these of the utility model are revised with modification, then the utility model also is intended to comprise these changes and modification interior.

Claims

1.U type outlet pipe silencing apparatus; Comprise muffler body (1), suction tude (2) and outlet pipe (3); It is characterized in that: said muffler body (1) is inner to be divided into chamber I (7), chamber II (8) and chamber III (9) along airintake direction by dividing plate (4,5) successively; The exhaust end of said suction tude (2) stretches in the chamber II (8) and with chamber II (8) and is communicated with, and said chamber II (8) is communicated with through pipe II (20) with chamber I (7), and chamber I (7) is communicated with through pipe I (10) with chamber III (9); The inlet end of said outlet pipe (3) is communicated with chamber III (9); Said outlet pipe (3) is the U type, and it extends to chamber I (7) by chamber III (9) through chamber II (8), passes through chamber II (8), chamber III (9) and rear end cover (14) after curving again successively and extends outside the muffler body (1).

2. U type outlet pipe silencing apparatus as claimed in claim 1; It is characterized in that: said muffler body (1) comprises inner core (11), urceolus (12), front cover (13) and rear end cover (14); Be placed in the said inner core (11) in the urceolus (12); Be filled with noise reduction layer (15) between inner core (11) and the urceolus (12), front cover (13) and rear end cover (14) are arranged at the two ends of urceolus (12) respectively.

3. U type outlet pipe silencing apparatus as claimed in claim 2 is characterized in that: said inner core (11) is for netted.

4. U type outlet pipe silencing apparatus as claimed in claim 2 is characterized in that: said noise reduction layer (15) is the glass felt.