CN211980192U

CN211980192U - Exhaust silencer

Info

Publication number: CN211980192U
Application number: CN201922157591.4U
Authority: CN
Inventors: 吴鸿昌
Original assignee: Nanan Haoyunlai Rain Gear Co ltd
Current assignee: Harbin Zhongtong Valve Factory
Priority date: 2019-12-05
Filing date: 2019-12-05
Publication date: 2020-11-20
Anticipated expiration: 2029-12-05

Abstract

The utility model provides an exhaust muffler, the main casing body, be located the intake pipe of main casing body front end with be located the outlet duct of main casing body rear end, the inside of the main casing body is equipped with first core, second core and third core after to in the past in proper order, the inside of the main casing body still is equipped with a long inner tube, long inner tube is connected the second core with between the third core, the inside of the main casing body still is equipped with a nozzle stub, the nozzle stub is vertical welding in the front end of outlet duct. Owing to be equipped with first core, second core and third core after to in the past in the inside of the main casing body in proper order, through bleeder vent and the bloop on each core, the noise reduction that produces when making gas flow in the outlet duct makes the utility model discloses noise reduction effect is good.

Description

Exhaust silencer

Technical Field

The utility model relates to an exhaust muffler.

Background

The exhaust muffler functions to reduce exhaust noise by gradually reducing exhaust pressure and attenuating pulsation of exhaust pressure. The muffler is made of an aluminum-plated steel plate or a stainless steel plate. Typically, the muffler is comprised of a resonant chamber, an expansion chamber and a set of perforated tubes. Some mufflers are filled with heat-resistant sound-absorbing materials, and most of the sound-absorbing materials are glass fibers or asbestos. The exhaust gas flows into the expansion chamber and the resonance chamber through the porous pipe, the flow direction of the exhaust gas is changed continuously in the process, the pressure and the pressure pulsation of the exhaust gas are reduced and attenuated gradually, the energy of the exhaust gas is consumed, and finally the exhaust noise is reduced. But the noise reduction effect in the existing silencer is not good.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to the not enough of above-mentioned prior art, provide an exhaust muffler, have the good advantage of noise reduction effect.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides an exhaust muffler, includes the main casing body, is located the intake pipe of main casing body front end and being located the outlet duct of main casing body rear end, the inside of main casing body is equipped with first core, second core and third core after to in the past in proper order, the inside of main casing body still is equipped with a long inner tube, long inner tube is connected the second core with between the third core, the inside of main casing body still is equipped with a nozzle stub, nozzle stub vertical welding is in the front end of outlet duct.

Further, the first, second, and third core plates divide the main housing to form first, second, third, and fourth chambers.

Further, the end of the air inlet pipe extends into the front part of the first chamber, and the air inlet pipe is arranged at the lower part of the main shell.

Furthermore, the front end of the long inner tube extends into the second chamber, and the rear end of the long inner tube extends into the fourth chamber.

Still further, the short tube is located in the fourth chamber, the rear end of the long inner tube faces the short tube, and the short tube is perpendicular to the long inner tube.

Further, the diameter of the short pipe is from.times to.times the diameter of the long inner pipe.

Furthermore, a plurality of first air holes are formed in the first core plate, a plurality of second air holes are formed in the second core plate, and a plurality of third air holes are formed in the third core plate.

Furthermore, a first silencing hole is formed in the lower end of the first air hole, a second silencing hole is formed in the lower end of the second air hole, and a third silencing hole is formed in the lower end of the third air hole.

The beneficial effects of the utility model are that, owing to be equipped with first core, second core and third core after to in the past in the inside of the main casing body in proper order, through bleeder vent and the bloop on each core, the noise reduction that produces when making gas flow in the outlet duct makes the utility model discloses noise reduction effect is good.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments of the present invention will be briefly described below.

Fig. 1 is a structural sectional view of the present invention.

Fig. 2 is a partial enlarged view of fig. 1 at N.

Fig. 3 is a partial enlarged view of fig. 1 at M.

List of reference numerals: the air inlet pipe comprises an air inlet pipe-10, a main shell-20, a first core plate-21, a first air vent-211, a first air vent-212, a second core plate-22, a second air vent-221, a second air vent-222, a long inner pipe-23, a third core plate-24, a third air vent-241, a third air vent-242, a short pipe-25, a first cavity-26, a second cavity-27, a third cavity-28, a fourth cavity-29 and an air outlet pipe-30.

Detailed Description

The following detailed description will be made with reference to the accompanying drawings.

Referring to fig. 1 to 3, an exhaust muffler as shown in fig. 1 includes a main housing 20, an intake pipe 10 located at a front end of the main housing 20, and an outlet pipe 30 located at a rear end of the main housing 20, wherein a first core plate 21, a second core plate 22, and a third core plate 24 are sequentially disposed inside the main housing 20 from front to rear, a long inner pipe 23 is further disposed inside the main housing 20, the long inner pipe 23 is connected between the second core plate 22 and the third core plate 24, a short pipe 25 is further disposed inside the main housing 20, and the short pipe 25 is perpendicularly welded to a front end of the outlet pipe 30.

To allow gas to flow in sequence to the outlet duct, the first, second and

third core plates

21, 22, 24 divide the main housing 20 into first, second, third and

fourth chambers

26, 27, 28, 29.

Preferably, the end of the air inlet pipe 10 extends into the front of the first chamber 26, and the air inlet pipe 10 is mounted on the lower portion of the main housing 20.

Preferably, the front end of the long inner tube 23 extends into the second chamber 27, and the rear end of the long inner tube 23 extends into the fourth chamber 29.

Preferably, the short tube 25 is located in the fourth chamber 29, the rear end of the long inner tube 23 faces the short tube 25, and the short tube 25 is perpendicular to the long inner tube 23.

Preferably, the short tube 25 has a diameter 1.5 to 2.5 times as large as the diameter of the long inner tube 23.

As shown in fig. 2 and 3, the first core plate 21 is provided with a plurality of first vents 211, the second core plate 22 is provided with a plurality of second vents 221, and the third core plate 24 is provided with a plurality of third vents 241. With the above structure, the noise reduction effect in the main casing 20 can be improved.

Preferably, a first sound-deadening hole 212 is formed at a lower end of the first air hole 211, a second sound-deadening hole 222 is formed at a lower end of the second air hole 221, and a third sound-deadening hole 242 is formed at a lower end of the third air hole 241. The structure above the society is favorable to making the noise reduction that produces when gas flows into the outlet duct.

Owing to be equipped with first core 21, second core 22 and third core 24 in proper order after to in the past in main casing body 20's inside, be equipped with a plurality of first bleeder vents 211 on through first core 21, be equipped with a plurality of second bleeder vents 221 on the second core 22, it makes things convenient for gaseous inflow to the outlet duct to be equipped with a plurality of third bleeder vents 241 on the third core 24, and the lower extreme of first bleeder vent 211 is equipped with first bloop 212, the lower extreme of second bleeder vent 221 is equipped with second bloop 222, the lower extreme of third bleeder vent 241 is equipped with third bloop 242, and the noise reduction that produces when making gaseous inflow outlet duct makes the utility model discloses noise reduction effect is good.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, so as not to limit the protection scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered in the protection scope of the present invention.

Claims

1. The utility model provides an exhaust silencer, its characterized in that, includes main casing body (20), is located intake pipe (10) of main casing body (20) front end and be located outlet duct (30) of main casing body (20) rear end, the inside of main casing body (20) is equipped with first core (21), second core (22) and third core (24) in proper order from the past to the back, the inside of main casing body (20) still is equipped with a long inner tube (23), long inner tube (23) are connected between second core (22) and third core (24), the inside of main casing body (20) still is equipped with a nozzle stub (25), nozzle stub (25) vertical welding is in the front end of outlet duct (30).

2. An exhaust silencer according to claim 1, wherein said first core plate (21), said second core plate (22) and said third core plate (24) divide said main housing (20) to form a first chamber (26), a second chamber (27), a third chamber (28) and a fourth chamber (29).

3. An exhaust silencer according to claim 2, wherein the end of said inlet pipe (10) protrudes into the front of said first chamber (26), said inlet pipe (10) being mounted in the lower part of said main casing (20).

4. An exhaust silencer according to claim 2, characterized in that the front end of the long inner pipe (23) extends into the second chamber (27) and the rear end of the long inner pipe (23) extends into the fourth chamber (29).

5. The exhaust muffler according to claim 4, characterized in that the short pipe (25) is located in the fourth chamber (29) with the rear end of the long inner pipe (23) directed towards the short pipe (25), the short pipe (25) being perpendicular to the long inner pipe (23).

6. The exhaust muffler according to claim 5, wherein the short pipe (25) has a diameter 1.5 to 2.5 times as large as the diameter of the long inner pipe (23).

7. The exhaust silencer of claim 2, wherein the first core plate (21) is provided with a plurality of first vents (211), the second core plate (22) is provided with a plurality of second vents (221), and the third core plate (24) is provided with a plurality of third vents (241).

8. The exhaust muffler according to claim 7, wherein the lower end of the first vent hole (211) is provided with a first muffling hole (212), the lower end of the second vent hole (221) is provided with a second muffling hole (222), and the lower end of the third vent hole (241) is provided with a third muffling hole (242).