CN212272366U

CN212272366U - Smoke discharging and noise reducing device

Info

Publication number: CN212272366U
Application number: CN202020409415.5U
Authority: CN
Inventors: 张景松
Original assignee: Fujian Tongtongfa Technology Development Co ltd
Current assignee: Fujian Tongtongfa Technology Development Co ltd
Priority date: 2020-03-27
Filing date: 2020-03-27
Publication date: 2021-01-01
Anticipated expiration: 2030-03-27

Abstract

The utility model provides a device of making an uproar falls in discharging fume, including amortization box, amortization pipe and flange, the intraductal baffle of making an uproar that falls of amortization will cut apart in the amortization and form antechamber and back chamber, it includes disc portion, arc curved portion and straight portion to fall the baffle of making an uproar, the arc curved portion is connected in the periphery of disc portion, just the outer end slope of arc curved portion outwards extends, straight portion connects the outer end of arc curved portion, straight portion encircles the axis of the baffle of making an uproar falls forms first cavity, the arc curved portion encircles the axis of the baffle of making an uproar forms the second cavity, the central authorities of disc portion have seted up a through-hole, the diameter of through-hole is 0.75 times ~ 0.85 times of amortization pipe. Owing to be equipped with the baffle of making an uproar of falling in the hush pipe, through the structure of making an uproar of falling that is equipped with in disc portion, arc curved portion and the straight portion, make the utility model has the advantage that noise reduction effect is good.

Description

Smoke discharging and noise reducing device

Technical Field

The utility model relates to a device of making an uproar falls especially involves a device of making an uproar falls in discharging fume.

Background

Application number is 201120177669.X, utility model name is a silencer is discharged fume and is fallen device of making an uproar, includes: the structure is characterized in that a silencing pipe is connected to the silencing box, a flange is arranged at the end of the silencing pipe, and an engine smoke exhaust interface is arranged on the silencing box. But the middle part of the silencing pipe is more in gas amount passing through, so that the noise reduction effect of the middle part of the silencing pipe is reduced, and the integral noise reduction effect of the noise reduction device is further reduced.

Disclosure of Invention

An object of the utility model is to the not enough of above-mentioned prior art, provide a device of making an uproar falls in discharging fume, 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 a device of making an uproar falls in discharging fume, includes amortization box, amortization pipe and flange, the intraductal baffle of making an uproar that is equipped with of amortization, it will to fall the baffle of making an uproar divide the intraductal preceding chamber and the back chamber of formation of amortization, it includes disc portion, arc curved portion and straight portion to fall the baffle of making an uproar, the arc curved portion is connected in the periphery of disc portion, just the outer end slope of arc curved portion outwards extends, straight portion connects the outer end of arc curved portion, straight portion encircles the axis of the baffle of making an uproar falls forms first cavity, the arc curved portion encircles the axis of the baffle of making an uproar forms the second cavity, a through-hole has been seted up in the central authorities of disc portion, the diameter of through-hole is 0.75.

Furthermore, a plurality of small holes are formed in the edge of the disc part and are uniformly distributed outside the through hole.

Furthermore, a plurality of air holes are formed in the arc bending part, and the second cavity is communicated with the rear cavity through the air holes.

Still further, the first chamber is in communication with the front cavity.

Furthermore, the number of the small holes is from one to one.

Further, an annular convex part is arranged on the inner side of the inner end part of the arc-shaped bent part.

Further, the straight part is connected to the inner wall of the silencing pipe through a plurality of connecting rods.

Furthermore, a plurality of connecting rods divide the straight part and the inner wall of the silencing pipe to form a plurality of airflow channels.

The beneficial effects of the utility model are that, owing to be equipped with the baffle of making an uproar that falls in the hush pipe, through the structure of making an uproar that falls that is equipped with in disc portion, arc curved portion and the straight portion, make the utility model has the advantage that the 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 structural section view of the noise reduction partition plate of the present invention.

Fig. 3 is a partial enlarged view at E of fig. 2.

List of reference numerals: the silencer comprises a silencing box-10, a silencing pipe-20, a front cavity-21, a rear cavity-22, a flange-30, a noise reduction clapboard-40, a disc part-41, a through hole-411, a small hole-412, an arc bent part-42, a second cavity-421, an air hole-422, a straight part-43, a first cavity-431, a connecting rod-50, an air flow channel-60 and an axis-R.

Detailed Description

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

Referring to fig. 1 to 3, a smoke exhausting and noise reducing device as shown in fig. 1 and 2 includes a silencing box 10, a silencing pipe 20 and a flange 30, a noise reducing partition plate 40 is disposed in the silencing pipe 20, the noise reducing partition plate 40 divides the silencing pipe 20 into a front cavity 21 and a rear cavity 22, the noise reducing partition plate 40 includes a circular disk portion 41, an arc bending portion 42 and a straight portion 43, the arc bending portion 42 is connected to the outer periphery of the circular disk portion 41, the outer end of the arc bending portion 42 extends obliquely and outwardly, the straight portion 43 is connected to the outer end of the arc bending portion 42, the straight portion 43 surrounds the axis R of the noise reducing partition plate 40 to form a first chamber 431, the arc bending portion 42 surrounds the axis R of the noise reducing partition plate 40 to form a second chamber 421, a through hole 411 is formed in the center of the circular disk portion 41, and the diameter of the through hole 411 is 0.75 to 0.85 times that of the silencing pipe 20.

In order to improve the noise reduction effect at the disc portion 41, a plurality of small holes 412 are formed at the edge of the disc portion 41, and the small holes 412 are uniformly distributed outside the through hole 411.

As shown in fig. 3, the curved portion 42 is provided with a plurality of ventilation holes 422, and the ventilation holes 422 communicate the second chamber 421 with the rear chamber 22. By adopting the structure, the noise reduction effect at the arc-shaped part 42 can be improved.

Preferably, the first chamber 431 is in communication with the front chamber 21.

In order to further improve the noise reduction effect at the disc portion 41, the number of the small holes 412 is 20 to 30.

In order to further enhance the noise reduction effect at the curved part 42, an inner side of an inner end of the curved part 42 is provided with an annular convex portion 423.

Preferably, the straight portion 43 is connected to the inner wall of the silencer duct 20 by a plurality of connecting rods 50.

Preferably, a plurality of connecting rods 50 divide the straight portion 43 and the inner wall of the silencer duct 20 to form a plurality of air flow passages 60.

In summary, since the noise reduction partition plate 40 is disposed in the silencing tube 20, the noise reduction structure is disposed on the disk portion 41, the curved portion 42 and the straight portion 43, and the plurality of small holes 412 are disposed on the edge of the disk portion 41, so that the noise reduction effect at the disk portion 41 is improved; for the noise reduction effect of further promotion disk portion 41 department, the number of aperture 412 is 20 to 30, simultaneously, for the noise reduction effect of further promotion arc curved part 42 department, the inboard of the tip in arc curved part 42 is equipped with annular convex part 423, makes the utility model has the advantages of 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 smoke exhaust and noise reduction device comprises a silencing box (10), a silencing pipe (20) and a flange (30), and is characterized in that a noise reduction partition plate (40) is arranged in the silencing pipe (20), the noise reduction partition plate (40) divides the interior of the silencing pipe (20) into a front cavity (21) and a rear cavity (22), the noise reduction partition plate (40) comprises a disc part (41), an arc bent part (42) and a straight part (43), the arc bent part (42) is connected to the periphery of the disc part (41), the outer end of the arc bent part (42) extends outwards in an inclined mode, the straight part (43) is connected to the outer end of the arc bent part (42), the straight part (43) surrounds the axis (R) of the noise reduction partition plate (40) to form a first cavity (431), the arc bent part (42) surrounds the axis (R) of the noise reduction partition plate (40) to form a second cavity (421), the center of the disc part (41) is provided with a through hole (411), and the diameter of the through hole (411) is 0.75-0.85 times that of the silencing tube (20).

2. A smoke evacuation and noise reduction device according to claim 1, wherein the edge of said disk portion (41) is opened with a plurality of small holes (412), and said plurality of small holes (412) are uniformly distributed outside said through hole (411).

3. A smoke evacuation and noise reduction device according to claim 1, characterized in that said curved portion (42) is provided with a plurality of ventilation holes (422), said ventilation holes (422) communicating said second chamber (421) with said rear cavity (22).

4. A smoke evacuation and noise reduction arrangement according to claim 3, characterized in that said first chamber (431) communicates with said front cavity (21).

5. A smoke evacuation and noise reduction device according to claim 2, characterized in that the number of said small holes (412) is 20 to 30.

6. A smoke evacuation and noise reduction arrangement according to claim 1, characterized in that the inner end of the curved portion (42) is provided with an annular raised portion (423) on the inside.

7. A smoke evacuation and noise reduction device according to claim 1, characterized in that said straight part (43) is connected to the inner wall of said silencer duct (20) by means of several connecting rods (50).

8. A smoke evacuation and noise reduction device according to claim 7 wherein a plurality of tie rods (50) divide the straight portion (43) and the inner wall of the silencer duct (20) to form a plurality of air flow channels (60).