CN209244846U - A kind of outlet noise-reducing structure of Roots blower - Google Patents
A kind of outlet noise-reducing structure of Roots blower Download PDFInfo
- Publication number
- CN209244846U CN209244846U CN201822153104.2U CN201822153104U CN209244846U CN 209244846 U CN209244846 U CN 209244846U CN 201822153104 U CN201822153104 U CN 201822153104U CN 209244846 U CN209244846 U CN 209244846U
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- China
- Prior art keywords
- fixed block
- roots blower
- noise
- discharge pipe
- outlet
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Abstract
The utility model discloses a kind of outlet noise-reducing structures of Roots blower, it includes a pedestal, is equipped with driving motor and Roots blower on the pedestal, the Roots blower includes an air outlet, the air outlet connects a discharge pipe, the discharge pipe is equipped with safety valve and pressure gauge, the discharge pipe connects an elastomeric joint, vertical muffler and check valve, is also connected with the second muffler on the discharge pipe.By the way that the second muffler is arranged, the noise in Roots blower discharge pipe is greatly reduced, is allowed to meet the requirement in high mute place.Sound-absorbing material is made of Polyester Fibers, while having adsorption effect, can effectively adsorb dust in air particle, dust particles is avoided to enter in working environment, guarantee the cleanliness of working environment.
Description
Technical field
The utility model belongs to Roots blower field, more particularly, to a kind of outlet noise-reducing structure of Roots blower.
Background technique
Roots blower, also referred to as roots blower, English name Roots blower are volume rotary blower, utilize
Two or three lobed rotors are performed relative motion in cylinder to compress and convey the rotary compressor of gas.This air blower
Structure is simple, easily manufactured, the gas conveying and pressurization suitable for low-pressure occasion, it is also possible to make vacuum pump.
There are biggish noises in transmission gas process for Roots blower in the prior art, generate more serious make an uproar
Sound pollution.It tends not to meet mute more demanding place in the air outlet setting level-one noise-reducing structure of air blower, for example,
201721704936.8 disclosing a kind of Roots blower special vertical exit silencer, belong to silencing means, structure includes
Muffler shell, connecting tube, connecting flange and bottom plate, the muffler shell are vertical structure.The utility model has good
Good noise reduction effect, but still can have noise pollution and dust, mute more demanding and cleanliness cannot be adapted to
Higher place.
Utility model content
In order to solve the problems of the above-mentioned prior art, the utility model proposes a kind of outlets of Roots blower to disappear
Sound structure can further decrease the noise of blower outlet, be allowed to meet mute more demanding place.
The technical solution of the utility model is achieved in that
A kind of outlet noise-reducing structure of Roots blower comprising be equipped on a pedestal, the pedestal driving motor and
Roots blower, the Roots blower include an air outlet, and the air outlet connects a discharge pipe, and the discharge pipe is equipped with
Safety valve and pressure gauge, the discharge pipe connect an elastomeric joint, vertical muffler and check valve, which is characterized in that it is described go out
The second muffler is also connected on air hose, second muffler includes noise reduction inner tube and sound insulation outer tube, the noise reduction inner tube week
There are multiple bloops to uniform array, the inner wall of the noise reduction inner tube is equipped with vibrator, between the noise reduction inner tube and sound insulation outer tube
A vibration area is formed, is equipped with multiple partitions among the vibration area, the vibration area is divided into multiple by the partition
Resonance region, the resonance region is interior to be equipped with sound-absorbing material.
In the outlet noise-reducing structure of this Roots blower of the utility model, the vibrator at least two.
In the outlet noise-reducing structure of this Roots blower of the utility model, the driving motor is equipped with one actively
Wheel, the Roots blower are equipped with a driven wheel, and the driving wheel connects with driven wheel by belt, the driving motor and
Jiong shape bracket is equipped between pedestal, the driving motor is mounted on the Jiong shape bracket.
In the outlet noise-reducing structure of this Roots blower of the utility model, the two sides of the Jiong shape bracket are equipped with solid
Determine block, the fixed block includes the first fixed block and the second fixed block, is set respectively in first fixed block and the second fixed block
There is the first adjusting bolt and second to adjust bolt, first fixed block and the second fixed block are adjusted with described first respectively to be positioned
Bolt and second adjusts positioning bolt using being threadedly coupled, and described first, which adjusts positioning bolt and second, adjusts the one of positioning bolt
End is against the side wall of the Jiong shape bracket.
The outlet noise-reducing structure for implementing this Roots blower of the utility model, has the advantages that by setting
The second muffler is set, the noise in Roots blower discharge pipe is greatly reduced, is allowed to meet the requirement in high mute place.Sound-absorbing
Material is made of Polyester Fibers, while having adsorption effect, can effectively adsorb dust in air particle, avoid dust
Particle enters in working environment, guarantees the cleanliness of working environment.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the outlet noise-reducing structure of this Roots blower of the utility model；
Fig. 2 is the diagrammatic cross-section of the second muffler in Fig. 1；
Fig. 3 is the structural schematic diagram of noise reduction inner tube in Fig. 2；
Fig. 4 is the diagrammatic cross-section of Fig. 3；
Fig. 5 is the mounting structure schematic diagram of fixed block and Jiong shape bracket in Fig. 1.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe.
The outlet noise-reducing structure of this Roots blower of the utility model as shown in Figures 1 to 5 a comprising pedestal
11, driving motor 12 and Roots blower 13 are installed, Roots blower 13 includes an air outlet, air outlet connection on pedestal 11
One discharge pipe 132, discharge pipe 132 are equipped with safety valve 133 and pressure gauge 134, and pressure gauge 134 can detecte Roots blower 13
Air outlet pressure, when 134 detection air port hypertonia of pressure gauge, just need to open safety valve 133 carry out pressure release at
Reason.Prevent large quantity of air through the gap between 13 internal impeller of Roots blower or the gap between impeller and casing drain back to
Air inlet leads to the reduction of Roots blower engine efficiency.
Discharge pipe 132 connects an elastomeric joint 135, vertical muffler 136 and check valve 137, and Roots blower 13 is in work
When work, impeller needs high-speed rotation, is easy to produce the huge sound, while air blower impeller and casing at work
Between air pressure constantly changing so that air blower is easy to produce huge vibration at work, in Roots blower 13 and vertical
Elastomeric joint 135 is arranged between formula muffler 136 can reduce vibration to the maximum extent, avoid vibrating to discharge pipe 132 and
The structures such as vertical muffler 136 damage.Vertical muffler 136 effectively reduces the noise in discharge pipe 132.When pipeline closes
When closing, gas generates adverse current, and check valve 137 is closed, and prevents gas backstreaming, and Roots blower 13 is because of superpressure mistake at this time
It carries, it may appear that voltage and current increases, and safety valve 133 will start to rush down pressure at this time, and pressure maintains boundary's point of relative equilibrium, guarantees
The safety of Roots blower 13.
The second muffler 14 is also connected on discharge pipe 132, the second muffler 14 includes noise reduction inner tube 141 and sound insulation outer tube
142, the circumferential uniform array of noise reduction inner tube 141 has multiple bloops 143, and the inner wall of the noise reduction inner tube 141 is equipped with vibrator 144,
Since there are some dust particles from the air-flow that air outlet passes through, bloop 143 can be blocked by noise reduction inner tube 141 for a long time,
Vibrator 144, which is arranged, to block bloop 143 to avoid dust particles, and dust particles enter resonance region under the action of air-flow
146.Preferably, noise reduction inner tube 141 is made of rubber material, although generating vibration under the action of vibrator 144, not
Vibrating noise can be generated.Vibrator 144 at least two, and the middle position of noise reduction inner tube 141 is set, there is good vibration
Dynamic effect.
A vibration area is formed between noise reduction inner tube 141 and sound insulation outer tube 142, is equipped with multiple partitions among vibration area
145, partition 145 is made of metal material, and vibration area is divided into multiple resonance regions 146 by partition 145, in resonance region 146
Equipped with sound-absorbing material 147.Resonance makes sound wave that reflection and interference occur when propagating, so that reducing acoustic energy reaches noise elimination purpose,
And noise elimination is further realized by the sound absorption of sound-absorbing material 147 in resonance region 146, noise is greatly reduced, is allowed to meet Gao Jing
Sound field requirement.Sound insulation outer tube 142 is made of stainless steel, and has good soundproof effect.
Preferably, sound-absorbing material 147 is made of Polyester Fibers, there is good sound-absorbing effect, while there is absorption
Effect can effectively adsorb dust in air particle, avoid dust particles from entering in working environment, guarantee working environment
Cleanliness.
12 are equipped with a driving wheel 121 on driving motor, and Roots blower 13 is equipped with a driven wheel 138,121 He of driving wheel
Driven wheel 138 is connected by belt, Jiong shape bracket 15 is equipped between driving motor 12 and pedestal 11, driving motor 12 is mounted on Jiong
On shape bracket 15, the two sides of Jiong shape bracket 15 are equipped with fixed block 16, and fixed block 16 includes the first fixed block 161 and the second fixed block
162, it is respectively equipped with the first adjusting bolt 163 and second in the first fixed block 161 and the second fixed block 162 and adjusts bolt 164, the
One fixed block 161 and the second fixed block 162 adjust positioning bolt 163 and second with first respectively and adjust the use of positioning bolt 164
It is threadedly coupled, one end of the first adjusting positioning bolt 163 and the second adjusting positioning bolt 164 is against the side wall of Jiong shape bracket 15.
Positioning bolt 163 and second can be adjusted by first and adjust the interaction of positioning bolt 164, can move driving motor 12
Position to control the rate of tension of belt, guarantee Roots blower mechanomotive force stablizes output.
When needing to tighten belt, unscrew the first adjusting positioning bolt 163 first, it is made to stretch out the first fixed block
Then 161 outer 1cm screw the second adjusting positioning bolt 164, protrude into 1cm in the second fixed block 162, due to the first adjusting
163 leftward position of bolt is fixed, so Jiong shape bracket 15 can move downward under the action of the second adjusting positioning bolt 164, this
When first adjusting positioning bolt 163 play positioning action, can so tighten belt, conversely, then first adjust second adjust positioning
Bolt 164, then the first positioning bolt 163 is adjusted, the rate of tension of belt can be reduced.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, made any modification, equivalent replacement and improvement etc. should be included in the utility model
Protection scope within.
Claims (4)
1. a kind of outlet noise-reducing structure of Roots blower comprising be equipped with driving motor and sieve on a pedestal, the pedestal
Thatch air blower, the Roots blower include an air outlet, and the air outlet connects a discharge pipe, and the discharge pipe is equipped with peace
Full valve and pressure gauge, the discharge pipe connect an elastomeric joint, vertical muffler and check valve, which is characterized in that the outlet air
The second muffler is also connected on pipe, second muffler includes noise reduction inner tube and sound insulation outer tube, and the noise reduction inner tube is circumferential
Uniform array has multiple bloops, and the inner wall of the noise reduction inner tube is equipped with vibrator, shape between the noise reduction inner tube and sound insulation outer tube
At a vibration area, multiple partitions are equipped among the vibration area, the vibration area is divided into multiple total by the partition
Shake area, is equipped with sound-absorbing material in the resonance region.
2. outlet noise-reducing structure according to claim 1, which is characterized in that the vibrator at least two.
3. outlet noise-reducing structure according to claim 1, which is characterized in that the driving motor is equipped with a driving wheel,
The Roots blower is equipped with a driven wheel, and the driving wheel is connected with driven wheel by belt, the driving motor and bottom
Jiong shape bracket is equipped between seat, the driving motor is mounted on the Jiong shape bracket.
4. outlet noise-reducing structure according to claim 3, which is characterized in that the two sides of the Jiong shape bracket, which are equipped with, to be fixed
Block, the fixed block include the first fixed block and the second fixed block, are respectively equipped in first fixed block and the second fixed block
First adjusts bolt and the second adjusting bolt, and first fixed block and the second fixed block adjust positioning spiral shell with described first respectively
Bolt and second adjusts positioning bolt using being threadedly coupled, and described first, which adjusts positioning bolt and second, adjusts one end of positioning bolt
It is against the side wall of the Jiong shape bracket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822153104.2U CN209244846U (en) | 2018-12-21 | 2018-12-21 | A kind of outlet noise-reducing structure of Roots blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822153104.2U CN209244846U (en) | 2018-12-21 | 2018-12-21 | A kind of outlet noise-reducing structure of Roots blower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209244846U true CN209244846U (en) | 2019-08-13 |
Family
ID=67534019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822153104.2U Expired - Fee Related CN209244846U (en) | 2018-12-21 | 2018-12-21 | A kind of outlet noise-reducing structure of Roots blower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209244846U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112524025A (en) * | 2020-12-04 | 2021-03-19 | 江苏名业机械科技有限公司 | Immersion type roots blower with low noise and simple and convenient installation |
-
2018
- 2018-12-21 CN CN201822153104.2U patent/CN209244846U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112524025A (en) * | 2020-12-04 | 2021-03-19 | 江苏名业机械科技有限公司 | Immersion type roots blower with low noise and simple and convenient installation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190813 Termination date: 20201221 |