CN211116191U - a muffler - Google Patents

Abstract

A muffler, comprising a cylindrical shell, end caps 1 and end caps 2 installed at both ends of the shell, a partition plate 1, a partition plate 2, a partition plate 3, a muffler pipe 1, and a muffler pipe 2 arranged in the shell , the intake pipe and exhaust pipe installed on the first end cover and the second end cover along the axial direction, the intake pipe, the muffler pipe one, the muffler pipe two and the exhaust pipe form an exhaust channel; 2. The three partitions are arranged in parallel to each other, and the casing is divided into chamber 1, chamber 2, chamber 3, and chamber 4 from left to right; The installation holes of the sound pipe, the mounting holes of the first, second and third partitions are provided with a ring-shaped protrusion 1. The inner diameter of the protrusion matches the muffler pipe, and each muffler pipe is connected to the corresponding spacer. There are two annular protrusions 2 for clamping the annular protrusion 1; the muffler pipe 1 and the muffler pipe 2 are both installed at the central axis of the shell; it can improve efficiency, reduce labor costs, and reduce pollution , is environmentally friendly.

Description

a muffler

technical field

The utility model relates to a muffler.

Background technique

Muffler (muffler) is a device that allows airflow through but can prevent and reduce sound transmission, and is an important measure to eliminate aerodynamic noise. Mufflers can block the propagation of sound waves and allow airflow to pass through, making them an effective tool for noise control. Therefore, the muffler can be installed behind the exhaust pipe connected with the engine to reduce the exhaust noise of the engine.

However, the connection between the muffler pipe and the partition plate in the current muffler is installed and fixed by CO2 gas shielded welding, which brings pollution on the one hand, and low production efficiency of the muffler on the other hand.

Utility model content

The purpose of the invention of the present invention is to overcome the above-mentioned deficiencies of the prior art, so as to provide a muffler that can improve efficiency, reduce labor costs, reduce pollution, and be environmentally friendly.

The technical scheme of the utility model is as follows: a muffler comprises a cylindrical casing, an end cover and a second end cover installed at both ends of the casing, a partition plate 1, a partition plate 2, a partition plate 3 and a The first sound pipe and the second muffler pipe are the intake pipe and the exhaust pipe respectively installed on the first end cover and the second end cover along the axial direction, and the intake pipe, the first muffler pipe, the second muffler pipe and the exhaust pipe are formed exhaust passage;

The first, second, and third partitions are arranged in parallel to each other, and the casing is divided into chamber 1, chamber 2, chamber 3, and chamber 4 from left to right. Chamber 3 is longer than chamber 2 and chamber 4. The length of chamber 2 is greater than that of chamber 1, and the length of chamber 1 is greater than that of chamber 4; One side of the mounting hole of the plate 3 is provided with an annular protrusion 1, the inner diameter of the protrusion matches the muffler pipe, and two annular protrusions are provided at the connection between each muffler pipe and the corresponding partition plate for clamping the annular protrusion 1. bulge two;

The muffler pipe 1 is inserted on the partition plate 1, and the partition plate 2 passes through the chamber 1, the cavity 2, and the cavity 3; The first muffler pipe and the second muffler pipe are installed at the central axis of the casing.

The first muffler pipe and the second muffler pipe are perforated pipes, and the first muffler pipe and the second muffler pipe have the same diameter.

Two groups of through-holes with different diameters of the through-holes are arranged on the walls of the first and second sound-absorbing pipes.

One group of through holes on the wall of the muffler pipe is located in chamber one, and the other group of through holes is located in chamber two, and the through hole diameter of the through hole group located in chamber one is smaller than that of the through hole group located in chamber two through hole diameter.

One group of through holes on the wall of the second muffler pipe is located in chamber three, and the other group of through holes is located in chamber four. through hole diameter.

The intake pipe and the exhaust pipe are respectively installed on the central axis of the first end cover and the second end cover.

The intake pipe, the exhaust pipe and the muffler pipe are all cylindrical metal pipes.

The connection between the internal muffler pipe and the partition plate of the utility model is connected and fixed by means of a hydraulic expansion pipe, which can not only improve the efficiency, reduce the labor cost, but also reduce pollution, and is environmentally friendly; since there is no welding inside the muffler, it is ensured that there is no foreign matter inside the muffler. , there will be no abnormal noise; the shell, end cover and partition form a four-chamber structure, and the noise reduction effect is obvious.

Description of drawings

Fig. 1 is the structural representation of the utility model;

FIG. 2 is a partial enlarged structural schematic diagram of FIG. 1 .

Detailed ways

The utility model will be further described below in conjunction with the accompanying drawings and examples.

In Figure 1 and Figure 2, the shell 3, end cap 1 2, end cap 2 9 and three partitions form a four-chamber structure of chamber 1, chamber 2, chamber 3, and chamber 4, and the noise reduction effect is obvious. , the length of chamber three is greater than that of chamber two, the length of chamber two is greater than that of chamber one, and the length of chamber one is greater than that of chamber four; intake pipe 1, two muffler pipes and exhaust pipe 10 form an exhaust channel; intake pipe 1 Inserted on the central axis of end cover one 2 along the axial direction, the exhaust pipe 10 is inserted on the central axis of the end cover two 9 along the axial direction; three partitions are provided with mounting holes for installing the muffler pipe , one side of the mounting holes of the three partitions is provided with an annular protrusion one, the inner diameter of the protrusion matches the muffler pipe, and the connection between each muffler pipe and the corresponding partition plate is provided with two for clamping by means of hydraulic expansion pipes. There is no welding inside the muffler, which ensures that there is no foreign matter inside the muffler, no abnormal sound, which can improve efficiency, reduce labor costs, and reduce pollution caused by welding, which is environmentally friendly. ; Muffler pipe one 5 is inserted in the partition plate one 4, the partition plate two 6 runs through the chamber one, the two chambers, the three chambers; Chamber 4; muffler pipe one 5 and muffler pipe two 7 are installed at the central axis of shell 3; the two muffler pipes have the same diameter and are perforated pipes, muffler pipe one 5, muffler pipe Two groups of through-hole groups with different diameters of through-holes are arranged on the pipe wall of 27; one group of through-hole groups on the pipe wall of muffler pipe 1 is located in chamber 1, and the other group of through-hole groups is located in chamber 2, which is located in chamber 1. The through hole diameter of the through hole group of chamber one is smaller than the through hole diameter of the through hole group located in chamber two; one group of through hole groups on the pipe wall of muffler pipe two is located in chamber three, and the other group of through hole groups is located in chamber three. In the fourth chamber, the through hole diameter of the through hole group located in the third chamber is larger than that of the through hole group located in the fourth chamber; the intake pipe 1, the exhaust pipe 10 and the muffler pipe are all cylindrical metal pipes.

Claims (7)

1. A muffler, characterized in that it comprises a cylindrical casing (3), end caps (2) and end caps (9) installed at both ends of the casing (3), and disposed in the casing (3). The partition one (4), partition two (6), partition three (8), muffler pipe one (5), muffler pipe two (7) are respectively installed on the end cover one (2) along the axial direction. , the intake pipe (1), the exhaust pipe (10) on the end cover two (9), the intake pipe (1), the muffler pipe one (5), the muffler pipe two (7) and the exhaust pipe ( 10) Form an exhaust passage; The first partition (4), the second partition (6), and the partition three (8) are arranged in parallel to each other, and the casing (3) is divided into chamber one, chamber two, chamber three, and chamber from left to right. Fourth, the length of chamber three is greater than that of chamber two, the length of chamber two is greater than that of chamber one, and the length of chamber one is greater than that of chamber four; There are installation holes for installing the muffler pipe. One side of the installation holes of the first partition plate (4), the second partition plate (6) and the third partition plate (8) is provided with a ring-shaped protrusion 1, and the inner diameter of the protrusion is the same as that of the installation hole. The muffler pipes are matched, and two ring-shaped protrusions 2 for clamping the ring-shaped protrusion 1 are arranged at the connection between each muffler pipe and the corresponding partition plate; The muffler pipe one (5) is inserted on the partition plate one (4) and the partition plate two (6) and passes through the chamber one, the second chamber, and the three chambers; the muffler pipe two (7) is inserted in the partition plate. The plate three (8) penetrates through the chamber three and the chamber four; the muffler pipe one (5) and the muffler pipe two (7) are installed at the central axis of the shell (3). 2. A muffler according to claim 1, characterized in that: the first muffler pipe (5) and the second muffler pipe (7) are perforated pipes, the muffler pipe one (5), the muffler pipe Two (7) pipes of the same diameter. 3 . The muffler according to claim 2 , wherein two sets of through-hole groups with different diameters of through-holes are arranged on the walls of the first (5) and second (7) mufflers. 4 . 4 . The muffler according to claim 3 , wherein a group of through holes on the wall of the muffler pipe one (5) is located in chamber one, and the other group of through holes is located in chamber two. 5 . , the through hole diameter of the through hole group located in the first chamber is smaller than the through hole diameter of the through hole group located in the second chamber. 5. A muffler according to claim 3, characterized in that: one group of through holes on the wall of the muffler pipe two (7) is located in chamber three, and the other group of through holes is located in chamber four , the through hole diameter of the through hole group located in the chamber three is larger than the through hole diameter of the through hole group located in the chamber four. 6 . The muffler according to claim 1 , wherein the intake pipe ( 1 ) and the exhaust pipe ( 10 ) are respectively mounted on the central axis of the first end cover ( 2 ) and the second end cover ( 9 ). 7 . superior. 7 . The muffler according to claim 1 , wherein the air intake pipe ( 1 ), the exhaust pipe ( 10 ) and the muffler pipe are all cylindrical metal pipes. 8 .

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