CN215002077U

CN215002077U - Exhaust device with sound insulation and noise reduction effects

Info

Publication number: CN215002077U
Application number: CN202120557187.0U
Authority: CN
Inventors: 曲书阳; 宋砚军; 薛梅
Original assignee: Jinan Lulian Group Rubber Products Co ltd
Current assignee: Jinan Lulian Group Rubber Products Co ltd
Priority date: 2021-03-16
Filing date: 2021-03-16
Publication date: 2021-12-03
Anticipated expiration: 2031-03-16

Abstract

The utility model relates to an exhaust device technical field provides an exhaust device with effect of making an uproar falls in giving sound insulation. The utility model discloses exhaust device with noise reduction effect gives sound insulation, cushion the air of business turn over exhaust pipe through the preceding conical pipe on preceding amortization frame that sets up in with the exhaust pipe and the back conical pipe on the back amortization frame and block, reduce air flow rate in the exhaust pipe and realize the amortization, absorb the noise that exhaust pipe and air friction produced through setting up the amortization cotton of exhaust pipe inner wall simultaneously, reduce the noise propagation.

Description

Exhaust device with sound insulation and noise reduction effects

Technical Field

The utility model relates to an exhaust device technical field specifically relates to an exhaust device with effect of making an uproar falls in giving sound insulation.

Background

The noise elimination exhaust device of today can not effectively eliminate the noise of fan, and the air after the noise elimination still has the sound of higher decibel, and the noise cancelling effect is not obvious, and can't circulate the processing to the higher noise of shellfish, and the noise treatment effect is relatively poor, can not reduce the fan noise of mill to qualified within range.

Disclosure of Invention

The embodiment of the utility model provides an exhaust device with noise reduction effect gives sound insulation. The specific technical scheme is as follows:

the exhaust device with the sound insulation and noise reduction effects comprises an exhaust pipe, wherein an exhaust fan, a front silencing frame and a rear silencing frame are arranged in the exhaust pipe, the exhaust fan is positioned between the front silencing frame and the rear silencing frame, and sound absorption cotton is arranged on the inner wall of the exhaust pipe; the front silencing frame is provided with a front conical pipe, the rear silencing frame is provided with a rear conical pipe, and the front conical pipe is opposite to the conical tip of the rear conical pipe.

Furthermore, the outer walls of the front conical pipe and the rear conical pipe are provided with spiral convex plates.

Furthermore, a rotating shaft and a steering engine connected with the rotating shaft are installed in the exhaust pipe, and a ventilation fence is installed on the rotating shaft; the rotating shaft is positioned between the front silencing frame and the rear silencing frame.

Further, the ventilation fence comprises a frame body and two clapboards arranged on the frame body, and an included angle is formed between the two clapboards.

Furthermore, a wind speed and direction sensor is arranged in the exhaust pipe.

Furthermore, a noise inductor is arranged in the exhaust pipe.

Furthermore, the wind speed and direction sensor also comprises a micro control board, and the steering engine, the wind speed and direction sensor and the noise sensor sheet are all connected with the micro control board.

The utility model discloses exhaust device with noise reduction effect gives sound insulation, cushion the air of business turn over exhaust pipe through the preceding conical pipe on preceding amortization frame that sets up in with the exhaust pipe and the back conical pipe on the back amortization frame and block, reduce air flow rate in the exhaust pipe and realize the amortization, absorb the noise that exhaust pipe and air friction produced through setting up the amortization cotton of exhaust pipe inner wall simultaneously, reduce the noise propagation.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.

Fig. 1 is a schematic longitudinal sectional view of an air exhaust device with sound insulation and noise reduction effects according to an embodiment of the present invention;

figure 2 is a schematic view of the structure of the ventilation fence,

wherein, 1, an exhaust pipe; 2. an exhaust fan; 3. a front silencing frame; 31. a front tapered tube; 4. a rear silencing frame; 41. a rear tapered tube; 5. sound-absorbing cotton; 6. a rotating shaft; 7. a steering engine; 8. a ventilation grate; 81. a frame body; 82. a partition plate; 9. a wind speed and direction sensor; 10. a noise sensor; 50. a convex plate.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings.

As shown in fig. 1-2, the exhaust device with sound insulation and noise reduction effects of the embodiment of the present invention comprises an exhaust pipe 1, wherein an exhaust fan 2, a front silencing frame 3 and a rear silencing frame 4 are installed in the exhaust pipe 1, the exhaust fan 2 is located between the front silencing frame 3 and the rear silencing frame 4, and sound absorption cotton 5 is arranged on the inner wall of the exhaust pipe 1; the front silencing frame 3 is provided with a front conical pipe 31, the rear silencing frame 4 is provided with a rear conical pipe 41, and the front conical pipe 31 is opposite to the conical tip of the rear conical pipe 41.

Wherein, the outer walls of the front conical pipe 31 and the rear conical pipe 41 are provided with spiral convex plates 50.

Wherein, a rotating shaft 6 and a steering engine 7 connected with the rotating shaft 6 are arranged in the exhaust pipe 1, and a ventilation fence 8 is arranged on the rotating shaft 6; the rotating shaft 6 is positioned between the front silencing frame 3 and the rear silencing frame 4.

The ventilation fence 8 includes a frame 81 and two partitions 82 mounted on the frame 81, and an included angle is formed between the two partitions 82.

Wherein, a wind speed and direction sensor 9 is arranged in the exhaust pipe 1.

Wherein, a noise sensor 10 is arranged in the exhaust duct 1.

Wherein, still include the micro control board, steering wheel, wind speed and direction sensor and noise inductor piece all are connected with micro control board.

The micro control board can be a printed circuit board integrated with a processor, a memory, an auxiliary integrated circuit chip and auxiliary electronic components; the printed circuit board is provided with different types of interfaces for the communication connection or the electric connection of the micro control board and other devices, such as an IC bus interface, a serial bus interface and a parallel bus interface.

When the air exhaust device with the sound insulation and noise reduction effects is used, the following steps are performed:

after the exhaust fan is started, air in the exhaust pipe is conducted, the air flow rate of the air entering and exiting the exhaust pipe is reduced through the front conical pipe and the rear conical pipe which are oppositely arranged, the air flow rate in the exhaust pipe is slow, noise generated by impact friction between the air and the exhaust pipe is reduced, and noise is reduced by sound absorption of noise reduction cotton in the exhaust pipe; the steering gear is changed through the micro control board, the steering of the rotating shaft is changed, the direction of the ventilation grating is changed, and the air flow rate in the exhaust pipe can be conveniently adjusted.

It should be understood that the mounting between the structures in the embodiments of the present invention may refer to welding, bolting, screwing, scarf joining, and bonding; the connection between the pipes may be referred to as communication; the connection between the appliances may refer to an electrical connection. The present invention is not limited to the precise arrangements described above and shown in the drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. An exhaust device with sound insulation and noise reduction effects is characterized by comprising an exhaust pipe, wherein an exhaust fan, a front silencing frame and a rear silencing frame are arranged in the exhaust pipe; the front silencing frame is provided with a front conical pipe, the rear silencing frame is provided with a rear conical pipe, and the front conical pipe is opposite to the conical tip of the rear conical pipe.

2. The exhaust device with sound insulation and noise reduction effects as claimed in claim 1, wherein the outer walls of the front conical tube and the rear conical tube are each provided with a spiral convex plate.

3. The exhaust device with the sound insulation and noise reduction effects as claimed in claim 2, wherein a rotating shaft and a steering engine connected with the rotating shaft are installed in the exhaust pipe, and a ventilation grating is installed on the rotating shaft; the rotating shaft is positioned between the front silencing frame and the rear silencing frame.

4. The exhaust device with sound insulation and noise reduction effects as claimed in claim 3, wherein the air grid comprises a frame body and two partition plates mounted on the frame body, and an included angle is formed between the two partition plates.

5. The exhaust device with sound insulation and noise reduction effects as claimed in claim 4, wherein a wind speed and direction sensor is installed in the exhaust pipe.

6. An exhaust device with sound insulation and noise reduction effects according to claim 5, wherein a noise sensor is installed in the exhaust duct.

7. The exhaust device with the sound insulation and noise reduction effects as claimed in claim 6, further comprising a micro control board, wherein the steering engine, the wind speed and direction sensor and the noise sensor sheet are all connected with the micro control board.