CN217080793U - Roots blower silencer - Google Patents

Abstract

The utility model discloses a roots's fan silencer belongs to noise elimination equipment technical field, its characterized in that: a group of bottom plates are arranged at the left end and the right end of the housing cavity, a cylindrical hole pipe is sleeved in the housing cavity, a silencing filler is arranged between the housing cavity and the cylindrical hole pipe and is used for absorbing low-frequency noise and partial high-frequency noise in noise gas, absorb the air current simultaneously and arouse the conchal vibration and produce the radiated sound, welded fastening between drum hole pipe and the bottom plate, both ends weld respectively and are provided with air inlet tuber pipe and gas outlet tuber pipe about the shell chamber, be provided with round diffusion hole I on the air inlet tuber pipe, make the noise high frequency part shorten through diffusion hole I back sound wave, be provided with round diffusion hole II on the gas outlet tuber pipe, increase the through-flow volume makes the inside voltage-sharing state that reaches of cavity, the air current of having solved that current equipment can not accurately handle the noise of high frequency and low frequency and noise itself can arouse the conchal vibration and produce the technical problem that the radiated sound leads to secondary pollution, mainly used in the aspect of the noise elimination.

Description

Roots blower silencer

Technical Field

The utility model relates to a noise elimination equipment technical field specifically is roots fan silencer.

Background

The Roots blower is a positive displacement blower, its principle is to utilize two blade-shaped rotors to make relative motion in the air cylinder to compress and transport the rotary compressor of the gas, apply to the work of the power plant, sewage treatment aeration and cement delivery, etc. extensively, in the existing Roots blower, the impeller is the rotating part of the Roots blower, particularly three leaves, still there are noises in the middle of the work, will choose to install the silencing equipment in order to solve the enterprises with too loud noise, the silencer is a pipeline with noise treatment and exhaust function at the same time, change make pipeline noise attenuate or reflect back with pipe and bend with sound-absorbing lining or utilizing the interface agent, the existing silencing equipment is usually that the noise of the blower enters the silencing pipe directly and reaches the purpose of silencing, the too simple treatment means can not process high-frequency part and low-frequency part in the noise part accurately, the noise airstream will stimulate the shell wall to vibrate and produce the radiated sound and produce the secondary pollution at the same time, roots blower mufflers have been proposed for this purpose.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a roots fan silencer to solve the problem that proposes among the above-mentioned background art.

Realize above-mentioned purpose, the utility model provides a following technical scheme: roots fan silencer, including shell chamber, drum hole pipe, amortization filler, air inlet tuber pipe and gas outlet tuber pipe, its characterized in that: the acoustic noise reduction device is characterized in that a group of bottom plates are arranged at the left end and the right end of the outer shell cavity, a cylindrical hole pipe is sleeved in the outer shell cavity, a silencing filler is arranged between the outer shell cavity and the cylindrical hole pipe and used for absorbing low-frequency noise and partial high-frequency noise in noise gas and simultaneously absorbing airflow to excite the shell wall to vibrate to generate radiated sound, the cylindrical hole pipe and the bottom plates are welded and fixed, an air inlet air pipe and an air outlet air pipe are respectively welded at the left end and the right end of the outer shell cavity and used for preliminarily treating the high-frequency noise in the noise, a connecting flange I is arranged on the outer wall at the left side of the air inlet air pipe and is conveniently connected with an air outlet of a Roots blower, a circle of diffusion holes I are formed in the air inlet air pipe, so that the sound wave of the noise high-frequency part passing through the diffusion holes I is shortened, a sealing plate is arranged at the right top end of the air inlet air pipe to ensure that the noise-containing gas can only pass through the diffusion holes I to give out a path, the shrouding on be provided with the strengthening rib, further reinforcement shrouding plays the fixed action, gas outlet tuber pipe right side outer wall on be provided with flange II, be convenient for be connected with outside exhaust pipe, the gas outlet tuber pipe on be provided with round diffusion hole II, increase through-flow volume makes the inside voltage-sharing state that reaches of cavity, has improved the acoustic resistance simultaneously, has further strengthened the noise cancelling effect.

Preferably: the cylindrical hole pipe is provided with a group of absorption holes, and low-frequency noise and partial high-frequency noise in the noise gas are better diffused into the absorption holes, so that the noise can be more fully silenced.

Preferably: the silencing filler is superfine glass wool, and the superfine glass wool has a strong attraction function and a flame retardant function.

Preferably: the air inlet eliminating air pipe and the air outlet air pipe are made of galvanized materials, and the galvanized materials have excellent antirust capacity and can prevent pipelines from rusting.

The utility model has the advantages of it is following:

through designing outer housing cavity, drum hole pipe, the amortization is packed, air inlet tuber pipe and gas outlet tuber pipe, noise gas carries out preliminary treatment through the high frequency noise in the air inlet tuber pipe in the noise at first, low frequency noise and partial high frequency noise are adsorbed by the amortization filler, the amortization filler reduces the air current simultaneously and arouses the conchal wall vibration and produce the radiated sound, gas outlet tuber pipe increase leads to the flow and makes the inside voltage-sharing state that reaches of cavity, the acoustic resistance has been improved simultaneously, the noise cancelling effect has further been strengthened. Compared with the prior art, the device can completely process the high-frequency noise part and the low-frequency noise part in the noise, and simultaneously, the silencing filler is arranged to reduce the problem that the air flow excites the shell wall to vibrate to generate radiated sound, so that the purpose of accurately reducing the noise is achieved.

Drawings

FIG. 1 is a block diagram of the present invention;

FIG. 2 is a partially enlarged view of FIG. 1A of the present invention;

fig. 3 is a front view of the present invention.

The attached drawings are as follows: 1. a housing cavity; 2. a base plate; 3. a cylindrical bore tube; 4. a sound-deadening packing; 5. an air inlet duct; 6. an air outlet duct; 7. a connecting flange I; 8. a diffusion hole I; 9. closing the plate; 10. reinforcing ribs; 11. a connecting flange II; 12. a diffusion hole II; 13. absorbing pores.

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 work belong to the protection scope of the present invention.

Example 1

As shown in fig. 1-3:

roots's fan silencer includes shell chamber 1, drum hole pipe 3, amortization filler 4, air inlet tuber pipe 5 and gas outlet tuber pipe 6, its characterized in that: the improved structure of the solar cell comprises a shell cavity 1, a set of bottom plates 2 are arranged at the left end and the right end of the shell cavity 1, a cylindrical hole tube 3 is sleeved inside the shell cavity 1, a set of absorption holes 13 are formed in the cylindrical hole tube 3, silencing filler 4 is arranged between the shell cavity 1 and the cylindrical hole tube 3, the silencing filler 4 is made of superfine glass wool, the cylindrical hole tube 3 and the bottom plates 2 are fixedly welded, an air inlet air pipe 5 and an air outlet air pipe 6 are respectively welded at the left end and the right end of the shell cavity 1, the silencing air inlet air pipe 5 and the air outlet air pipe 6 are made of galvanized materials, a connecting flange I7 is arranged on the outer wall at the left side of the air inlet air pipe 5, a circle of diffusion holes I8 is formed in the air inlet air pipe 5, a sealing plate 9 is arranged at the right top end of the air inlet air pipe 5, reinforcing ribs 10 are arranged on the sealing plate 9, and a connecting flange II 11 is arranged on the outer wall at the right side of the air outlet air pipe 6, and a circle of diffusion holes II 12 are formed in the air outlet duct 6.

The working principle of the utility model is as follows:

at first with air inlet tuber pipe 5 and roots's fan exhaust end flange joint, with gas outlet tuber pipe 6 and outside exhaust pipe flange joint, noise that roots's fan produced gets into shell chamber 1 through air inlet tuber pipe 5 in, high frequency part in the noise is dispersed out from diffusion hole I8 through air inlet tuber pipe 5 and is carried out the primary treatment, low frequency noise and some high frequency noise are absorbed in getting into amortization filler 4 through absorbing hole 13 on by drum pore pipe 3 in the noise after the processing, the air current is discharged to outside exhaust pipe on left port and diffusion hole II 12 on gas outlet tuber pipe 6 afterwards, increase through-flow makes the inside pressure-sharing state that reaches of cavity, the acoustic resistance has been improved simultaneously, the noise cancelling effect has further been strengthened.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (4)

1. Roots's fan silencer, including shell chamber (1), drum hole pipe (3), amortization filler (4), air inlet tuber pipe (5) and gas outlet tuber pipe (6), its characterized in that: the novel air conditioner is characterized in that a group of bottom plates (2) are arranged at the left end and the right end of an outer shell cavity (1), a cylindrical hole pipe (3) is sleeved inside the outer shell cavity (1), silencing filler (4) is arranged between the outer shell cavity (1) and the cylindrical hole pipe (3), the cylindrical hole pipe (3) and the bottom plates (2) are fixedly welded, an air inlet air pipe (5) and an air outlet air pipe (6) are respectively welded at the left end and the right end of the outer shell cavity (1), a connecting flange I (7) is arranged on the outer wall of the left side of the air inlet air pipe (5), a circle of diffusion holes I (8) are arranged on the air inlet air pipe (5), a sealing plate (9) is arranged at the right top end of the air inlet air pipe (5), reinforcing ribs (10) are arranged on the sealing plate (9), and a connecting flange II (11) is arranged on the outer wall of the right side of the air outlet (6), and a circle of diffusion holes II (12) are formed in the air outlet air pipe (6).

2. The roots blower muffler according to claim 1, wherein: the cylindrical hole pipe (3) is provided with a group of absorption holes (13).

3. The roots blower muffler according to claim 1, wherein: the sound attenuation filler (4) is superfine glass wool.

4. The roots blower muffler according to claim 1, wherein: the air inlet pipe (5) and the air outlet pipe (6) are made of galvanized materials.

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