CN217813967U

CN217813967U - Noise elimination filter

Info

Publication number: CN217813967U
Application number: CN202222304727.1U
Authority: CN
Inventors: 窦仁龙
Original assignee: Shanghai Kangnaisi Blower Co ltd
Current assignee: Shanghai Kangnaisi Blower Co ltd
Priority date: 2022-08-31
Filing date: 2022-08-31
Publication date: 2022-11-15
Anticipated expiration: 2032-08-31

Abstract

The utility model discloses a noise elimination filter relates to noise elimination filter technical field, including the noise elimination casing, be provided with the inner chamber in the noise elimination casing, the inner chamber intussuseption is filled with the foam, fixedly connected with noise elimination baffle on the top inner wall of noise elimination casing, be close to top position department fixedly connected with intake pipe on the lateral wall of noise elimination casing, the one end fixedly connected with ring flange of intake pipe, the inlet port has been seted up on the top of noise elimination casing, the top of noise elimination casing is located the fixedly connected with filter of position department of inlet port. The utility model discloses it is rational in infrastructure, through the noise elimination baffle that sets up, increased the noise elimination distance to the noise elimination baffle is the arc structure, and the cooperation foam has increased noise elimination area, has avoided the inside noise diffusion of roots's fan outside, has improved import silencer noise elimination effect, through installing the tip at the noise elimination casing with the filter, is convenient for regularly maintain the filter, has improved convenient operation nature, simple structure, and it is convenient to make.

Description

Noise elimination filter

Technical Field

The utility model relates to a noise elimination filter technical field, in particular to noise elimination filter.

Background

The Roots blower belongs to a positive displacement blower, and the end faces of an impeller and front and rear end covers of the blower. The principle is a rotary compressor which compresses and conveys gas by utilizing the relative motion of two blade-shaped rotors in a cylinder. The air blower has simple structure and convenient manufacture, is widely applied to aquaculture oxygenation, sewage treatment aeration and cement conveying, is more suitable for a gas conveying and pressurizing system in a low-pressure occasion, and can also be used as a vacuum pump and the like. In order to prevent clogging due to dust accumulation after prolonged use of Roots blowers, filters are often added to the blower inlet.

Current import noise elimination filter generally adopts the air to get into inside back from the lower part, at first through filtering and noise elimination, reentrant roots's fan air inlet, and inside is short because of the noise elimination distance, and roots's fan internal noise diffuses the outside easily, leads to import silencer noise cancelling effect poor to current import noise elimination filter structure is complicated, and the manufacturing degree of difficulty is big, and the filter is installed inside the silencer, inconvenient periodic maintenance, consequently, this application provides a noise elimination filter satisfies the demand.

SUMMERY OF THE UTILITY MODEL

An object of this application is to provide a noise elimination filter, through the noise elimination baffle that sets up, the noise elimination distance has been increased to the noise elimination baffle is the arc structure, and the cooperation foam has increased the noise elimination area, has avoided roots's fan internal noise to spread to the outside, has improved import silencer noise cancelling effect, through installing the filter at the tip of noise elimination casing, is convenient for regularly maintain the filter, has improved convenient operation nature, simple structure, and it is convenient to make.

In order to achieve the above purpose, the present application provides the following technical solutions: the utility model provides a noise elimination filter, includes the noise elimination casing, be provided with the inner chamber in the noise elimination casing, the inner chamber intussuseption is filled with the foam, fixedly connected with noise elimination baffle on the top inner wall of noise elimination casing, be close to top position fixedly connected with intake pipe on the lateral wall of noise elimination casing, the one end fixedly connected with ring flange of intake pipe, the inlet port has been seted up on the top of noise elimination casing, the top of noise elimination casing is located the fixedly connected with filter of position department of inlet port.

Preferably, the sound-damping partition plate is of an arc structure.

Preferably, the filter is fixedly attached to the top end of the muffler case by a pair of fixing bolts.

Preferably, the top end of the silencing shell is fixedly connected with a rain hat, and the front view section of the rain hat is of a triangular structure.

Preferably, a hanging ring is fixedly connected to the side wall of the sound attenuation shell.

Preferably, the side wall of the air inlet pipe is fixedly connected with a reinforcing rib, and the reinforcing rib is fixedly connected with the side wall of the silencing shell.

Preferably, the specific material of the foam is a polyurethane material.

To sum up, the utility model discloses a technological effect and advantage:

the utility model discloses it is rational in infrastructure, inside the air gets into the filter from the filter lateral wall, filter the dust in the air, then get into in the noise elimination casing through the inlet port, and the top from the noise elimination baffle passes through with admitting air between the noise elimination casing, then in getting into the intake pipe and getting into the roots blower, through the noise elimination baffle that sets up, the noise elimination distance has been increased, and the noise elimination baffle is the arc structure, the cooperation foam, the inside noise diffusion of roots blower is outside has been avoided, noise elimination area has been increased, the noise elimination effect of imported silencer has been improved, through installing the tip at the noise elimination casing with the filter, be convenient for regularly maintain the filter, the operation convenience is improved, moreover, the steam generator is simple in structure, and convenience in manufacture is realized.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic perspective view of a muffler filter;

FIG. 2 is a schematic view of a partially cut-away front view of the muffler filter;

fig. 3 is a partially cut-away bottom structural schematic diagram of the silencing filter.

In the figure: 1. a sound-deadening housing; 2. an air inlet pipe; 3. a flange plate; 4. a filter; 5. rain-proof caps; 6. fixing the bolt; 7. reinforcing ribs; 8. a hoisting ring; 9. foaming; 10. a sound-deadening partition plate; 11. and (4) air inlet holes.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

The embodiment is as follows: referring to fig. 1-3, a noise elimination filter shown includes a noise elimination casing 1, an inner cavity is provided in the noise elimination casing 1, a foam 9 is filled in the inner cavity, the concrete material of the foam 9 is polyurethane, a noise elimination partition 10 is fixedly connected to the inner wall of the top of the noise elimination casing 1, the noise elimination partition 10 is made of metal, the noise elimination partition 10 is of an arc structure, an air inlet pipe 2 is fixedly connected to the side wall of the noise elimination casing 1 near the top end, one end of the air inlet pipe 2 is fixedly connected with a flange 3, the noise elimination filter is fixed to the air inlet of a roots blower through a bolt and the flange 3, an air inlet hole 11 is provided at the top end of the noise elimination casing 1, the filter 4 is fixedly connected to the air inlet hole 11 through a pair of fixing bolts 6, the filter 4 is fixedly connected to the top end of the noise elimination casing 1 through a pair of fixing bolts 6, as shown in fig. 2, air enters the filter 4 from the side wall of the filter 4, dust in the air is filtered, then enters the noise elimination casing 1 through the air inlet hole 11, the noise elimination partition 10, the noise elimination casing is conveniently maintained, the noise elimination filter is conveniently, the noise elimination casing is conveniently maintained, and the noise elimination casing is conveniently, the noise elimination casing is conveniently maintained through the arc structure, the noise elimination partition 10, and the noise elimination casing is conveniently.

As an implementation manner in this embodiment, as shown in fig. 1, a rain hat 5 is fixedly connected to a top end of the sound attenuation housing 1, a front view cross section of the rain hat 5 is in a triangular structure, and the rain hat 5 is made of a metal material, and is welded on the sound attenuation housing 1 for shielding rain and protecting the filter 4.

As an embodiment of the present embodiment, as shown in fig. 2, a hanging ring 8 is fixedly connected to a side wall of the sound attenuation housing 1, and the hanging ring 8 is welded to the side wall of the sound attenuation housing 1.

As an embodiment of the present embodiment, as shown in fig. 1, a reinforcing rib 7 is fixedly connected to a side wall of the intake pipe 2, the reinforcing rib 7 is fixedly connected to a side wall of the muffler case 1, and the reinforcing rib 7 increases the strength of the connection structure between the intake pipe 2 and the muffler case 1.

This practical theory of operation:

inside air got into filter 4 from filter 4 lateral wall, filter the dust in the air, then get into in the noise elimination casing 1 through inlet port 11, and the top from noise elimination baffle 10 and the passing through of admitting air between the noise elimination casing 1, then in getting into intake pipe 2 and getting into the roots blower, noise elimination baffle 10 through setting up, the noise elimination distance has been increased, and noise elimination baffle 10 is the arc structure, cooperation foam 9, the diffusion of roots blower internal noise to the outside has been avoided, the inlet muffler noise elimination effect has been improved, through installing filter 4 at the tip of noise elimination casing 1, be convenient for regularly maintain filter 4, the operation convenience has been improved, moreover, the steam generator is simple in structure, and the manufacture is convenient.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions on some technical features, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of the present invention.

Claims

1. A kind of noise elimination filter, characterized by: the silencer is characterized by comprising a silencing shell (1), wherein an inner cavity is formed in the silencing shell (1), foam (9) is filled in the inner cavity, a silencing partition plate (10) is fixedly connected to the inner wall of the top of the silencing shell (1), an air inlet pipe (2) is fixedly connected to the position, close to the top end, of the side wall of the silencing shell (1), a flange plate (3) is fixedly connected to one end of the air inlet pipe (2), an air inlet hole (11) is formed in the top end of the silencing shell (1), and a filter (4) is fixedly connected to the position of the air inlet hole (11) at the top end of the silencing shell (1).

2. A sound damping filter according to claim 1, characterised in that: the silencing partition plate (10) is of an arc-shaped structure.

3. A sound damping filter according to claim 1, wherein: the filter (4) is fixedly connected to the top end of the silencing shell (1) through a pair of fixing bolts (6).

4. A sound damping filter according to claim 1, wherein: the top end of the noise elimination shell (1) is fixedly connected with a rain hat (5), and the front view section of the rain hat (5) is of a triangular structure.

5. A sound damping filter according to claim 1, wherein: and a hanging ring (8) is fixedly connected to the side wall of the silencing shell (1).

6. A sound damping filter according to claim 1, wherein: fixedly connected with strengthening rib (7) on the lateral wall of intake pipe (2), strengthening rib (7) with the lateral wall fixed connection of noise elimination casing (1).

7. A sound damping filter according to claim 1, characterised in that: the concrete material of foam (9) is polyurethane material.