CN219197640U

CN219197640U - Roots blower muffler

Info

Publication number: CN219197640U
Application number: CN202320231362.6U
Authority: CN
Inventors: 加布里; 张俊清
Original assignee: Tafer Fluid Equipment Suzhou Co ltd
Current assignee: Tafer Fluid Equipment Suzhou Co ltd
Priority date: 2023-02-16
Filing date: 2023-02-16
Publication date: 2023-06-16
Anticipated expiration: 2033-02-16

Abstract

The utility model relates to the technical field of silencers, in particular to a Roots blower silencer, which comprises a shell, wherein two ends of the shell are respectively communicated with an air inlet pipe and an air outlet pipe, two partition boards are fixedly connected in the shell, air guide pipes are fixedly connected on the partition boards in a penetrating way, a plurality of through holes are formed in the air guide pipes, a perforated plate is fixedly connected on the inner side of the shell close to the inner side wall of the shell, silencing cotton is filled between the perforated plate and the inner side wall of the shell, and glass cloth is filled between the silencing cotton and the perforated plate; after entering the shell from the air inlet pipe, the air collides with the baffle plate and the air guide pipe, so that the sound energy is partially folded, the sound energy radiated outwards by the air can be effectively reduced through the reflection and interference of the sound energy, the purpose of silencing is achieved, in addition, part of noise can be absorbed through the arranged silencing cotton, and meanwhile, the perforated plate and the glass cloth are used as protective layers of the silencing cotton, so that the silencing cotton is prevented from being taken away by air flow; the muffler can protect the noise reduction filler from being impacted and fallen off by high-pressure gas, and improves the noise reduction effect.

Description

Roots blower muffler

Technical Field

The utility model relates to the technical field of silencers, in particular to a Roots blower silencer.

Background

The Roots fans are constant flow fans, the noise is larger in the fans, and each Roots fan can be matched with a silencer to reduce the noise of the fans.

The Roots blower muffler generally uses fillers such as noise-reducing cotton, and noise is reduced at the outlet of the Roots blower by the characteristic of noise absorption of the porous structure of the filler. For example, a Roots blower muffler is disclosed in Chinese patent publication No. CN217270838U, which uses iron filings to form a porous sound absorbing filler. However, the filler material in the silencer pipe is easy to fall off under the impact of high-pressure gas, and enters the system along with the gas to damage parts of the system, so that the silencing effect and the service life of the silencer pipe can be reduced after long-term use.

Disclosure of Invention

The utility model aims to provide a Roots blower muffler, which can protect a silencing filler from being impacted and fallen away by high-pressure gas, and improve the silencing effect.

In order to achieve the above object, the technical scheme of the present utility model is as follows:

the utility model provides a roots fan muffler, includes the casing, the both ends of casing communicate respectively has intake pipe and outlet duct, two baffles of fixedly connected with in the casing, equal fixedly connected with air duct on the baffle, a plurality of through-holes have been seted up on the air duct, the casing inboard is close to inside wall fixedly connected with perforated plate, it is cotton to fill between perforated plate and the casing inside wall, it has glass cloth to fill between amortization cotton and the perforated plate.

Further, one end of the air inlet pipe extends into the shell and is provided with a plurality of air inlet holes, and one end of the air outlet pipe extends into the shell and is provided with a plurality of air outlet holes.

Furthermore, two filter screens are fixedly connected in the air inlet pipe, and filter cotton is arranged between the two filter screens.

Further, the noise reduction cotton is glass cotton.

Further, the two air guide pipes are not coaxially arranged.

The beneficial effects of the utility model are as follows:

after entering the shell from the air inlet pipe, the air collides with the baffle plate and the air guide pipe, so that the sound energy is partially folded, the sound energy radiated outwards by the air can be effectively reduced through the reflection and interference of the sound energy, the purpose of silencing is achieved, in addition, part of noise can be absorbed through the arranged silencing cotton, and meanwhile, the perforated plate and the glass cloth are used as a protective layer of the silencing cotton, so that the silencing cotton is prevented from being taken away by airflow; the utility model can protect the silencing filler from being impacted and fallen away by high-pressure gas, and improves the silencing effect.

Drawings

FIG. 1 is a schematic perspective view of the present utility model;

fig. 2 is a cross-sectional view of the present utility model.

Reference numerals: a housing 1; an intake pipe 2; an air outlet pipe 3; a separator 4; an air duct 5; a through hole 6; a perforated plate 7; a silencing cotton 8; a glass cloth 9; an air intake hole 10; an air outlet hole 11; a filter screen 12; and filter cotton 13.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1 and 2, the Roots blower silencer comprises a shell 1, two ends of the shell 1 are respectively communicated with an air inlet pipe 2 and an air outlet pipe 3, two partition boards 4 are fixedly connected in the shell 1, an air duct 5 is fixedly connected to the partition boards 4 in a penetrating manner, a plurality of through holes 6 are formed in the air duct 5, the inner side of the shell 1 is close to an inner side wall fixedly connected with a perforated plate 7, silencing cotton 8 is filled between the perforated plate 7 and the inner side wall of the shell 1, and glass cloth 9 is filled between the silencing cotton 8 and the perforated plate 7.

After entering the shell from the air inlet pipe 2, the air collides with the baffle plate 4 and the air guide pipe 5, so that the sound energy is partially folded, the sound energy radiated outwards by the air can be effectively reduced through the reflection and interference of the sound energy, the purpose of silencing is achieved, a plurality of through holes are formed in the air guide pipe 5, the direction of the air flow is changed, the sound energy entering the air guide pipe 5 is mutually counteracted, the sound energy is reduced, part of noise can be absorbed through the arranged silencing cotton 8, and meanwhile, the protection layer of the silencing cotton 8 is formed by the perforated plate 7 and the glass cloth 9, so that the silencing cotton 8 is prevented from being taken away by the air flow; the utility model can protect the silencing filler from being impacted and fallen away by high-pressure gas, and improves the silencing effect.

One end of the air inlet pipe 2 extends into the shell 1 and is provided with a plurality of air inlet holes 10, and one end of the air outlet pipe 3 extends into the shell 1 and is provided with a plurality of air outlet holes 11; the friction force generated by the air flow flowing through the air inlet holes 10 and the air outlet holes 11 and the hole wall converts part of sound energy into heat energy to be dissipated, and the transmission of noise can be effectively attenuated.

Two filter screens 12 are fixedly connected in the air inlet pipe 2, and filter cotton 13 is arranged between the two filter screens 12; the filter cotton 13 is arranged to filter dust particles in the sucked gas, and the filter screen 12 can prevent the filter cotton 13 from being washed away by airflow pulses.

The noise reduction cotton 8 is glass cotton.

The two air guide pipes 5 are not coaxially arranged.

Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present utility model, which is intended to be covered by the scope of the claims of the present utility model.

Claims

1. The utility model provides a roots fan muffler which characterized in that: including casing (1), the both ends of casing (1) communicate respectively has intake pipe (2) and outlet duct (3), two baffles (4) of fixedly connected with in casing (1), all fixed through-connection has air duct (5) on baffle (4), a plurality of through-holes (6) have been seted up on air duct (5), the casing (1) inboard is close to inside wall fixedly connected with perforated plate (7), it has amortization cotton (8) to fill between perforated plate (7) and casing (1) inside wall, it has glass cloth (9) to fill between amortization cotton (8) and the perforated plate (7).

2. The Roots blower muffler according to claim 1, wherein: one end of the air inlet pipe (2) extends into the shell (1) and is provided with a plurality of air inlet holes (10), and one end of the air outlet pipe (3) extends into the shell (1) and is provided with a plurality of air outlet holes (11).

3. The Roots blower muffler according to claim 1, wherein: two filter screens (12) are fixedly connected in the air inlet pipe (2), and filter cotton (13) is arranged between the two filter screens (12).

4. The Roots blower muffler according to claim 1, wherein: the silencing cotton (8) is glass cotton.

5. The Roots blower muffler according to claim 1, wherein: the two air guide pipes (5) are arranged in a non-coaxial way.