CN213953716U

CN213953716U - Exhaust purification silencer of diesel engine

Info

Publication number: CN213953716U
Application number: CN202023120057.5U
Authority: CN
Inventors: 伏军; 王伟晟
Original assignee: Shaoyang University
Current assignee: Shaoyang University
Priority date: 2020-12-22
Filing date: 2020-12-22
Publication date: 2021-08-13
Anticipated expiration: 2030-12-22

Abstract

The utility model discloses a diesel engine exhaust purification silencer, including purifying silencer shell (1), first cylindric purification base member (2), air inlet baffle (3), interior intubate of admitting air (4), first sieve mesh baffle (5), disk purification base member (6), second sieve mesh baffle (7), exhaust baffle (8), second cylindric purification base member (9), interior intubate of exhausting (10), interior intubate of admitting air (4) with first cylindric purification base member (2), shell (1), air inlet baffle (3) enclose into the chamber of admitting air; a disc-shaped purification base body (6) connected with the shell (1) is arranged in the middle of the silencer, and a first sieve mesh partition plate (5) and a second sieve mesh partition plate (7) are arranged on the left side and the right side of the disc-shaped purification base body (6). The exhaust purification silencer of the diesel engine is simple in structure, can purify tail gas, and improves the emission performance of the diesel engine.

Description

Exhaust purification silencer of diesel engine

Technical Field

The utility model relates to an automobile exhaust system especially relates to a diesel engine exhaust purification silencer.

Background

The diesel engine is widely used in the mechanical field due to the advantages of the diesel engine in the aspects of dynamic property, economy, reliability and the like, and the utilization rate of the diesel engine is extremely high when the diesel engine is used as a large country for agricultural production in China. Meanwhile, the environmental pollution caused by the diesel engine is becoming more and more serious, especially the pollution of tail gas and noise. One of the most effective methods currently used to control diesel engine exhaust and noise pollution is to install a clean muffler. Therefore, the technical upgrading of the purification silencer of the diesel engine is an important problem to be considered by various large diesel engine manufacturing enterprises.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a diesel engine exhaust purification silencer, this silencer mainly utilize in admitting air the intubate, sieve mesh baffle, exhaust on the intubate hole with purify the base member and carry out multistage noise elimination, utilize to purify the base member and filter the absorption to particulate matter in the diesel engine tail gas, purify the exhaust. The whole device has simple structure, obvious silencing effect and greatly improved tail gas purifying effect, and the adopted purifying matrix can be regenerated and reused.

A diesel engine exhaust purification silencer comprises a purification silencer shell, a first cylindrical purification base body, an air inlet partition plate, an air inlet inner insertion pipe, a first sieve mesh partition plate, a disc-shaped purification base body, a second sieve mesh partition plate, an exhaust partition plate, a second cylindrical purification base body and an exhaust inner insertion pipe:

the air inlet inner insert pipe, the first cylindrical purification base body, the shell and the air inlet partition plate enclose an air inlet cavity; a disc-shaped purification base body connected with the shell is arranged in the middle of the silencer, and a first sieve mesh partition plate and a second sieve mesh partition plate are arranged on the left side and the right side of the disc-shaped purification base body;

the exhaust inner insert tube, the second cylindrical purification base body, the purification silencer shell and the exhaust partition plate enclose an exhaust cavity.

At least 10 circular holes are uniformly distributed on the inner end wall surface of the exhaust inner inserting pipe along the circumferential direction, the second cylindrical purification base body is cylindrical, and the inner diameter of the second cylindrical purification base body is at least 1.5 times of the outer diameter of the exhaust inner inserting pipe.

Further, first sieve mesh partition plates and second sieve mesh partition plates are distributed at two ends of the disc-shaped purification base body, and gaps are formed between the first sieve mesh partition plates and the disc-shaped purification base body and between the second sieve mesh partition plates and the disc-shaped purification base body.

Further, first sieve mesh baffle, second sieve mesh baffle appearance are discoid, are provided with a plurality of through-holes on first sieve mesh baffle, the second sieve mesh baffle.

The utility model adopts the produced beneficial effect of above technical scheme to lie in:

(1) the utility model discloses a multistage noise elimination falls and makes an uproar. The exhaust gas purification device comprises a silencer, an air inlet inner insert pipe, a cylindrical purification base body, a disc-shaped purification base body, an exhaust inner insert pipe and a foamed ceramic, wherein the air inlet inner insert pipe is used for relieving the fluctuation of the exhaust gas of a diesel engine entering the silencer, then the holes in the air inlet inner insert pipe, the cylindrical purification base body, the disc-shaped purification base body and the exhaust inner insert pipe are used for homogenizing the air flow so as to weaken the noise, and meanwhile, the purification base body in the purification silencer is the foamed ceramic used for adsorbing particles in the exhaust gas of the diesel engine and has the effect of further weakening the exhaust noise of the engine.

(2) The utility model discloses the intubate has adopted the tube-shape of parcel formula to purify the base member in advancing the exhaust, can strengthen the even trafficability characteristic of diesel engine tail gas in the purification silencer to particulate matter in the diesel engine tail gas adsorbs, reduces the emission of diesel engine tail gas particulate matter.

(3) The utility model discloses a simple structure, tail gas noise elimination purifying effect and purifying effect are obvious, are convenient for maintain, still can realize purifying the regeneration of base member with the help of technical means such as burning, blowback simultaneously, in order to guarantee the utility model relates to an exhaust purification noise eliminator's recycle.

Drawings

FIG. 1 is a schematic view of an exhaust purifying muffler for a diesel engine according to the present invention;

FIG. 2 is a schematic cross-sectional view of the exhaust purifying muffler for a diesel engine according to the present invention;

wherein: 1-purifying the muffler shell; 2-a first cylindrical purification substrate; 3-an air intake partition; 4-air inlet inner insert pipe; 5-a first sieve mesh separator; 6-disk-shaped purification substrate; 7-a second sieve mesh separator; 8-an exhaust baffle; 9-a second cylindrical purification substrate; 10-an internal exhaust insert; 11-a first muffling chamber; 12-a second muffling chamber; 13-a third muffling chamber; 14-a fourth muffling chamber; 15-a fifth muffling chamber; 16-sixth muffling chamber.

Detailed Description

The following further describes embodiments of the present invention with reference to the following specific examples and drawings:

as shown in fig. 1, the present embodiment provides a diesel exhaust purification muffler, which comprises a purification muffler shell 1, a first cylindrical purification substrate 2, an intake partition 3, an intake inner insert pipe 4, a first mesh partition 5, a disk-shaped purification substrate 6, a second mesh partition 7, an exhaust partition 8, a second cylindrical purification substrate 9, an exhaust inner insert pipe 10, and the like. The main body of the exhaust purification muffler is a purification muffler shell 1, and a first cylindrical purification substrate 2, a first sieve mesh partition plate 5, a disc-shaped purification substrate 6, a second sieve mesh partition plate 7 and a second cylindrical purification substrate 9 are sequentially arranged in the shell 1 at intervals along the axial direction.

The shell 1, the first cylindrical purification base body 2, the air inlet partition plate 3 and the air inlet inner insert tube 4 enclose a first silencing chamber 11, and the first cylindrical purification base body 2, the purification silencer shell 1, the air inlet partition plate 3 and the first sieve mesh partition plate 5 enclose a second silencing chamber 12.

The first sieve mesh partition plate 5, the purifying silencer shell 1 and the disc-shaped purifying basal body 6 enclose a third silencing cavity 13.

The second sieve mesh partition plate 7, the purifying silencer shell 1 and the disc-shaped purifying matrix 6 enclose a fourth silencing cavity 14. The second sieve mesh partition 7, the purifying silencer shell 1, the exhaust partition 8 and the second cylindrical purifying matrix 9 enclose a fifth silencing cavity 15. The second cylindrical purification substrate 9, the exhaust partition plate 8, and the exhaust inner insert tube 10 enclose a sixth muffler chamber 16.

The exhaust device is connected with a diesel engine exhaust pipe, and the principle of purifying and silencing is realized:

diesel engine tail gas gets into first anechoic chamber through installing in the air inlet intubate 4, and air inlet intubate 4 helps alleviating diesel engine exhaust fluctuation, weakens the noise from the source. The tail gas after primary noise elimination is equalized and silenced by the circular holes on the wall surface and the end surface of the tail end of the air inlet inner insert tube 4 and enters the first silencing chamber 11. The tail gas that gets into first anechoic chamber 11 is through the first tubular purification base member 2 of fixed mounting on purification silencer shell 1 and air intake baffle 3 flow equalize and eliminate the noise once more, and to second noise elimination cavity 12, at the in-process of first tubular purification base member 2, the first tubular purification base member 2 of particulate pollutant in the diesel engine tail gas adsorbs, the realization is flow equalized and is eliminated the noise and get into third anechoic chamber 13 via arranging the round hole on the first sieve mesh baffle 5 wall to the first diesel engine tail gas that is purified of diesel engine tail gas, the tail gas that gets into third anechoic chamber 13 is flow equalized again and is eliminated the noise and adsorb for the second time through fixed mounting in purification silencer shell 1's disk purification base member two 6, then flow into fourth anechoic chamber 14. The tail gas entering the fourth muffling cavity 14 flows through the round holes on the wall surface of the second sieve mesh partition plate 7, is equalized in flow and is muffled to enter the fifth muffling cavity 15. The tail gas entering the fifth muffling cavity 15 flows into the sixth muffling cavity 16 through the second cylindrical purification substrate 9 for the third time of flow equalization adsorption. The tail gas flowing into the sixth silencing chamber 16 finally passes through the circular holes on the wall surface of the exhaust inner insert pipe 10 to be uniformly flow-equalized and silenced, and is rectified and discharged to the atmosphere. At least 10 circular holes are uniformly distributed on the inner end wall surface of the exhaust inner inserting pipe along the circumferential direction, the second cylindrical purification base body is cylindrical, and the inner diameter of the second cylindrical purification base body is at least 1.5 times of the outer diameter of the exhaust inner inserting pipe.

In the whole process, the tail gas of the diesel engine is subjected to multi-stage noise elimination and reduction by the air inlet inner insert tube 4, the first cylindrical purification base body 2, the first sieve mesh partition plate 5, the disc-shaped purification base body 6, the second sieve mesh partition plate 7, the second cylindrical purification base body 9 and the exhaust inner insert tube 10, and meanwhile, particles in the tail gas are adsorbed for many times when flowing through the purification base body, so that the purification of the tail gas is realized.

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. The utility model provides a diesel engine exhaust purifies silencer, includes purification silencer shell (1), first cylindric purification base member (2), baffle (3) admits air, intubate (4) in admitting air, first sieve mesh baffle (5), discoid purification base member (6), second sieve mesh baffle (7), exhaust baffle (8), second cylindric purification base member (9), intubate (10) in the exhaust, its characterized in that:

the air inlet inner insert pipe (4), the first cylindrical purification base body (2), the purification silencer shell (1) and the air inlet partition plate (3) form an air inlet cavity in a surrounding mode; a disc-shaped purification base body (6) connected with the shell (1) is arranged in the middle of the silencer, and a first sieve mesh partition plate (5) and a second sieve mesh partition plate (7) are arranged on the left side and the right side of the disc-shaped purification base body (6);

an exhaust cavity is enclosed by the exhaust inner insert tube (10), the second cylindrical purification base body (9), the purification silencer shell (1) and the exhaust partition plate (8);

at least 10 circular holes are uniformly distributed on the inner end wall surface of the air inlet inner insert tube (4) along the circumferential direction, the second cylindrical purification base body (9) is cylindrical, and the inner diameter of the second cylindrical purification base body (9) is at least 1.5 times of the outer diameter of the air outlet inner insert tube (10).

2. The diesel exhaust purifying muffler as set forth in claim 1, wherein: first sieve mesh partition plates (5) and second sieve mesh partition plates (7) are distributed at two ends of the disc-shaped purification base body (6), and gaps are formed between the first sieve mesh partition plates (5) and the second sieve mesh partition plates (7) and the disc-shaped purification base body (6).

3. The diesel exhaust purifying muffler as set forth in claim 1, wherein: first sieve mesh baffle (5), second sieve mesh baffle (7) appearance are discoid, are provided with a plurality of through-holes on first sieve mesh baffle (5), the second sieve mesh baffle (7).