CN221053779U

CN221053779U - Exhaust pipe muffler

Info

Publication number: CN221053779U
Application number: CN202322913082.6U
Authority: CN
Inventors: 邓敏
Original assignee: Chengdu Xinyizheng Environmental Protection Technology Co ltd
Current assignee: Chengdu Xinyizheng Environmental Protection Technology Co ltd
Priority date: 2023-10-30
Filing date: 2023-10-30
Publication date: 2024-05-31
Anticipated expiration: 2033-10-30

Abstract

The utility model relates to an exhaust pipe silencer, which comprises an air inlet pipe, an exhaust pipe body and an air outlet pipe, wherein the air inlet pipe and the air outlet pipe are arranged at two ends of the exhaust pipe body, the air inlet pipe and the air outlet pipe are communicated through the exhaust pipe body, a silencing barrel is arranged in the exhaust pipe body, the silencing barrel is funnel-shaped, a plurality of silencing holes are formed in the silencing barrel, and two ends of the silencing barrel are respectively communicated with the air inlet pipe and the air outlet pipe. The silencing barrel is designed into a funnel shape, the length of the silencing barrel in the exhaust pipe body is prolonged, more silencing holes are convenient to arrange, and silencing and noise reducing effects are improved.

Description

Exhaust pipe muffler

Technical Field

The utility model relates to the technical field of silencing equipment, in particular to an exhaust pipe silencer.

Background

The traditional muffler is internally provided with superfine glass wool or mineral wool and the like as sound absorbing materials, and is easy to shake and block under the conditions of high temperature, high humidity, high pressure, high smoke dust and strong medium and high frequency (audio), and the sound absorbing materials cannot achieve the sound absorbing effect, for example, the sound absorbing material is not applicable when being used in the fields of automobile exhaust, engines and motor sets, engine test machine tools, train engines and the like, therefore, the traditional treatment mode is to integrate a sound absorbing cylinder with holes in the muffler, and the composite structure can treat high, medium and low frequencies in noise. At present, the existing muffler mostly adopts a cylindrical shape, and the more the muffler holes are distributed on the muffler, the stronger the muffler capacity, the outer wall of the cylindrical muffler is in a straight line, and the limited muffler holes are distributed on a limited axial distance, so that the muffler has limited muffler performance, and therefore, the muffler needs to be further improved.

Disclosure of utility model

In view of the above, it is necessary to provide an exhaust pipe muffler in view of the above-described problems.

The utility model provides an blast pipe silencer, includes the intake pipe, blast pipe body and outlet duct, intake pipe and outlet duct set up in blast pipe body both ends, intake pipe and outlet duct are through blast pipe body intercommunication, this internal a silencing pot that is provided with of blast pipe, a silencing pot is the hopper-shaped, be provided with a plurality of silence holes on the silencing pot, silencing pot both ends communicate with intake pipe and outlet duct respectively.

Preferably, the waist of the silencing cylinder is provided with a ring piece with holes, and one surface of the ring piece facing the air outlet cylinder is provided with the silencing piece along the axial direction of the silencing cylinder.

Preferably, a heat insulation sleeve is further arranged in the exhaust pipe body, the outer wall of the heat insulation sleeve is in butt joint with the inner wall of the exhaust pipe body, and the silencing barrel penetrates through the heat insulation sleeve.

Preferably, the insulating sleeve is made of ceramic.

Preferably, a corrugated compensator is arranged at one end of the air inlet pipe, which is away from the air outlet pipe body.

Preferably, a lifting lug is arranged on the outer wall of the exhaust pipe body.

Preferably, the air outlet pipe is in a horn shape, and the diameter of the air outlet pipe is gradually increased towards one end away from the air outlet pipe body.

The utility model has the advantages that: the silencing barrel is designed into a funnel shape, the length of the silencing barrel in the exhaust pipe body is prolonged, more silencing holes are convenient to arrange, and silencing and noise reducing effects are improved.

Drawings

FIG. 1 is a schematic perspective view of an exhaust pipe muffler according to one embodiment;

FIG. 2 is a schematic front view of an exhaust pipe muffler;

FIG. 3 is a schematic cross-sectional view of A-A of FIG. 2.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The present utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the utility model, whereby the utility model is not limited to the specific embodiments disclosed below.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1 to 3, an exhaust pipe muffler comprises an air inlet pipe 1, an exhaust pipe body 2 and an air outlet pipe 3, wherein the air inlet pipe 1 and the air outlet pipe 3 are arranged at two ends of the exhaust pipe body 2, the air inlet pipe 1 and the air outlet pipe 3 are communicated through the exhaust pipe body 2, a muffler cylinder 4 is arranged in the exhaust pipe body 2, the muffler cylinder 4 is in a funnel shape, a plurality of muffler holes 41 are formed in the muffler cylinder 4, and two ends of the muffler cylinder 4 are respectively communicated with the air inlet pipe 1 and the air outlet pipe 3. Specifically, in this embodiment, we are provided with intake pipe 1 and outlet duct 3 at blast pipe body 2 both ends for intake and exhaust, intake pipe 1, blast pipe body 2 and outlet duct 3 adopt carbon steel Q235 to carry out seamless welding, adopt high temperature resistant black coating to protect simultaneously outside blast pipe body 2, simultaneously, be provided with funnel-shaped silencing pot 4 in blast pipe body 2, silencing pot 4 both ends are big, and the centre is little, and the outer wall is the V type, compares in straight section of thick bamboo, can lay more silencing holes 41, utilizes the damping effect of silencing hole to reduce the propagation of noise. When noise enters the silencer through the small holes, the noise is subjected to the resistance action of the small holes, so that the energy of the noise is reduced. The funnel-shaped silencing cylinder 4 prolongs the length of the silencing cylinder in the exhaust pipe body, is convenient for arranging more silencing holes, and improves silencing and noise reducing effects.

As shown in fig. 3, the waist of the silencing cylinder 4 is provided with a ring piece 42 with holes, and the ring piece 42 is provided with a silencing piece 43 along the axial direction of the silencing cylinder 4 on the surface facing the air outlet cylinder 3. Specifically, the ring piece 42 can reduce the gas flow rate, the lower the gas flow rate is, the smaller the noise is, the muffler piece 43 is made of a muffler material, so that the sound wave energy when the gas flows through can be weakened when the gas passes through, and the noise when the gas flow is discharged can be reduced.

As shown in fig. 3, a heat insulating sleeve 21 is further provided in the exhaust pipe body 2, the outer wall of the heat insulating sleeve 21 abuts against the inner wall of the exhaust pipe body 2, and the muffler cylinder 4 penetrates through the heat insulating sleeve 21. The insulating sleeve 21 is made of ceramic.

As shown in fig. 1 to 3, a corrugated compensator is disposed at one end of the air inlet pipe 1 facing away from the air outlet pipe body 1, and the effective expansion and contraction deformation of the corrugated pipe of the working main body is utilized to absorb the dimensional changes of the pipeline, the conduit, the container, etc. caused by expansion and contraction due to heat and contraction, etc., or compensate the axial, transverse and angular displacement of the pipeline, the conduit, the container, etc. And at the same time, vibration can be eliminated.

As shown in fig. 1-2, the outer wall of the exhaust pipe body 2 is provided with a lifting lug 22, so that when the muffler is assembled, the muffler is lifted and aligned to the exhaust pipe of the power equipment through the lifting lug 22, and the assembly is more convenient.

As shown in fig. 1 to 3, the air outlet pipe 3 is in a horn shape, the diameter of the air outlet pipe 3 gradually increases towards one end away from the air outlet pipe body 2, and the larger the diameter of the air outlet pipe 3 is, the lower the flow rate of discharged air is, so that the high-speed discharged air from the air outlet pipe is avoided, and the whistling noise is generated.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims

1. An exhaust pipe muffler, characterized in that: including intake pipe, blast pipe body and outlet duct, intake pipe and outlet duct set up in blast pipe body both ends, intake pipe and outlet duct are through blast pipe body intercommunication, this internal a silencing barrel that is provided with of blast pipe, a silencing barrel is the hopper-shaped, be provided with a plurality of sound attenuation holes on the silencing barrel, silencing barrel both ends communicate with intake pipe and outlet duct respectively.

2. An exhaust pipe muffler as defined in claim 1, wherein: the waist of the silencing barrel is provided with a ring piece with holes, and one surface of the ring piece facing the air outlet barrel is provided with a silencing piece along the axial direction of the silencing barrel.

3. An exhaust pipe muffler as defined in claim 1, wherein: the exhaust pipe is characterized in that a heat insulation sleeve is further arranged in the exhaust pipe body, the outer wall of the heat insulation sleeve is in butt joint with the inner wall of the exhaust pipe body, and the silencing barrel penetrates through the heat insulation sleeve.

4. An exhaust pipe muffler as defined in claim 3, wherein: the heat insulation sleeve is made of ceramic.

5. An exhaust pipe muffler as defined in claim 1, wherein: and one end of the air inlet pipe, which is away from the exhaust pipe body, is provided with a ripple compensator.

6. An exhaust pipe muffler as defined in claim 1, wherein: and a lifting lug is arranged on the outer wall of the exhaust pipe body.

7. An exhaust pipe muffler as defined in claim 1, wherein: the air outlet pipe is in a horn shape, and the diameter of the air outlet pipe is gradually increased towards one end deviating from the air outlet pipe body.