CN203500027U - Exhaust port silencing device of Roots blower - Google Patents
Exhaust port silencing device of Roots blower Download PDFInfo
- Publication number
- CN203500027U CN203500027U CN201320609837.7U CN201320609837U CN203500027U CN 203500027 U CN203500027 U CN 203500027U CN 201320609837 U CN201320609837 U CN 201320609837U CN 203500027 U CN203500027 U CN 203500027U
- Authority
- CN
- China
- Prior art keywords
- roots blower
- flow guiding
- conical flow
- guiding cover
- cylindrical shell
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 230000030279 gene silencing Effects 0.000 title abstract 3
- 230000003584 silencer Effects 0.000 claims description 19
- 230000000694 effects Effects 0.000 abstract description 7
- 208000009205 Tinnitus Diseases 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000010587 phase diagram Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The utility model relates to an exhaust port silencing device of a Roots blower, which comprises a columnar shell (1), an air-permeable hose (2) and a conical guide cover (3), wherein the columnar shell (1) is of an annular columnar structure with an opening at one end, and multiple vent holes are formed in the side surface; the conical guide cover (3) is placed in the columnar shell; the outer wall of a connection part (32) above the conical guide cover is overlapped with the pipe wall at the upper end of the columnar shell (1); the inner wall of the connection part (32) above the conical guide cover is in fixed and sealed connection with an exhaust pipe outlet (4) of the Roots blower; the air-permeable hose (2) is of an annular columnar structure with openings at two ends and is positioned between the columnar shell (1) and the conical guide cover (3). According to the device provided by the utility model, a silencing device is mounted at the exhaust pipe outlet of the Roots blower with boost pressure of 29.4KPa so as to completely eliminate the harsh noise at the exhaust pipe outlet of a vacuum pump without influencing the normal work of the Roots blower, thus the device realizes an environment-friendly noise reduction effect.
Description
Technical field
The utility model relates to a kind of silencer, especially relates to a kind of Roots blower relief opening silencer.
Background technique
Roots blower is volume rotary blower, utilizes two leaf rotors in cylinder, do relative movement, to compress and carry the rotary compressor of gas.This compressor makes two rotors keep engagement by the synchromesh gear of rotor axle head.On rotor, each recessed curvature portion and cylinder inner wall form swept volume, in rotor turning course, from intakeport, take away gas, when moving on near be connected with relief opening relief opening instantaneous, because there being the gas backstreaming of elevated pressures, at this moment the pressure in swept volume raises suddenly, then delivers gas to exhaust passage.The alternation successively of two rotors.Two rotors do not contact mutually, and sealing is realized in the gap by strict control between them, therefore the gas of discharging is not subject to lubricant pollution.
In the application of Roots blower, often because interacting, gas in outlet pipe and outlet pipe tube wall send harsh noise and pollution range is wide.
Summary of the invention
The utility model has designed a kind of Roots blower relief opening silencer, and the technical problem of its solution is Roots blower while carrying out work, and the regular thorn ear noise of its interruption has caused the noise pollution in working zone.
In order to solve the technical problem of above-mentioned existence, the utility model has adopted following scheme:
A Roots blower relief opening silencer, comprises cylindrical shell (1), ventilative flexible pipe (2) and conical flow guiding cover (3), it is characterized in that: cylindrical shell (1) is circular cylindrical and one end hatch frame, and its side is provided with a plurality of exhaust ports; Conical flow guiding cover (3) is positioned in cylindrical shell (1), joint (32) outer wall and cylindrical shell (1) the upper end tube wall of conical flow guiding cover (3) top are overlapping, joint (32) inwall and Roots blower exhaust outlet (4) fixed seal connection of conical flow guiding cover (3) top; Ventilative flexible pipe (2) is circular cylindrical and both ends open structure, and it is positioned between cylindrical shell (1) and conical flow guiding cover (3).
Further, at conical flow guiding cover (3), be also provided with bottom a conduit (31).
This Roots blower relief opening silencer has following beneficial effect:
(1) the utility model is installed a silencer at the Roots blower exhaust outlet place of boosting as 29.4KPa, make it in the situation that not affecting the normal work of Roots blower, the thorn ear noise at vacuum pump outlet pipe place is eliminated completely, there is the effect of environmental protection noise reduction.
(2) the utility model is established a conduit bottom at conical flow guiding, and conduit plays the effect of water conservancy diversion shock absorbing noise reduction equally, can reduce the effect of the kinetic energy of gas and the impact force of gas coupled columns shape shell.
Accompanying drawing explanation
Fig. 1: the structure broken away view of the utility model Roots blower relief opening silencer;
Fig. 2: the use phase diagram of the utility model Roots blower relief opening silencer.
Description of reference numerals:
1-cylindrical shell; 2-ventilative flexible pipe; 3-conical flow guiding cover; 31-conduit; 32-joint; 4-Roots blower exhaust outlet; 5-silencer.
Embodiment
Below in conjunction with Fig. 1 and Fig. 2, the utility model is described further:
As shown in Figure 1, the utility model silencer 5 comprises cylindrical shell 1, ventilative flexible pipe 2 and conical flow guiding cover 3.
Wherein, cylindrical shell 1 is circular cylindrical and one end hatch frame, and cylindrical shell 1 airtight side, bottom is provided with a plurality of exhaust ports, and gas is discharged by the exhaust port of shell 1 side.
Ventilative flexible pipe 2 is circular cylindrical and both ends open structure, and it is between cylindrical shell 1 and conical flow guiding cover 3.Ventilative flexible pipe 2 self has gas permeability, and gas can be discharged from ventilative flexible pipe 2 tube walls.
Conical flow guiding cover 3 is positioned in cylindrical shell 1, and joint 32 outer walls and the cylindrical shell 1 upper end tube wall of conical flow guiding cover 3 tops are overlapping, joint 32 inwalls of conical flow guiding cover 3 tops and 4 fixed seal connections of Roots blower exhaust outlet.
Conical flow guiding 4 is a conduit 31 bottom, and conduit 31 plays the effect of water conservancy diversion shock absorbing noise reduction equally.Roots blower exhaust is by after conduit 31 top conical flow guiding covers 3, as shown in the arrow in accompanying drawing 2, along conical flow guiding cover 3 inwalls, enter conduit 31, in the interior formation turbulent airflow of conduit 31, air-flow, in the interior interaction of conduit 31, has the effect that reduces the kinetic energy of gas and the impact force of gas coupled columns shape shell 1.
As shown in Figure 2, the utility model silencer 5 is realized noise elimination by the damping to gas, mainly by ventilative flexible pipe 2, is realized.Its working principle is as follows: Roots blower exhaust by conical flow guiding cover 3 after, enter in the space being formed by conical flow guiding cover 3 and ventilative flexible pipe 2, at the air outlet hole through ventilative flexible pipe 2 and cylindrical shell 1 side, discharge.
When 5 work of the utility model silencer, in the confined space being formed by device, all have certain pressure and can not affect Roots blower and normally work, this pressure has determined in the unit time that gas is by the throughput of cylindrical shell 1 side air outlet hole and ventilative flexible pipe 2.
The utility model is installed a silencer at the Roots blower exhaust outlet place of boosting as 29.4KPa, make it in the situation that not affecting the normal work of Roots blower, the thorn ear noise at vacuum pump outlet pipe place is eliminated completely, there is the effect of environmental protection noise reduction.
The utility model silencer mounting type is as follows:
1, on cylindrical shell 1 case side curved surface, make exhaust port, exhaust port is distributed on case side curved surface.
2, ventilative flexible pipe 2, conical flow guiding cover 3 are packed in the cylindrical shell 1 with exhaust port and form silencer 5.
3, utilize pipe clamp that silencer 5 is arranged on to Roots blower exhaust outlet 4, silencer 5 should have good tightness with Roots blower exhaust outlet 4 joints.
By reference to the accompanying drawings the utility model has been carried out to exemplary description above; obvious realization of the present utility model is not subject to the restrictions described above; as long as the various improvement that adopted method design of the present utility model and technological scheme to carry out; or without improving, design of the present utility model and technological scheme are directly applied to other occasion, all in protection domain of the present utility model.
Claims (2)
1. a Roots blower relief opening silencer, comprises cylindrical shell (1), ventilative flexible pipe (2) and conical flow guiding cover (3), it is characterized in that: cylindrical shell (1) is circular cylindrical and one end hatch frame, and its side is provided with a plurality of exhaust ports; Conical flow guiding cover (3) is positioned in cylindrical shell (1), joint (32) outer wall and cylindrical shell (1) the upper end tube wall of conical flow guiding cover (3) top are overlapping, joint (32) inwall and Roots blower exhaust outlet (4) fixed seal connection of conical flow guiding cover (3) top; Ventilative flexible pipe (2) is circular cylindrical and both ends open structure, and it is positioned between cylindrical shell (1) and conical flow guiding cover (3).
2. Roots blower relief opening silencer according to claim 1, is characterized in that: at conical flow guiding cover (3), be also provided with bottom a conduit (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320609837.7U CN203500027U (en) | 2013-09-30 | 2013-09-30 | Exhaust port silencing device of Roots blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320609837.7U CN203500027U (en) | 2013-09-30 | 2013-09-30 | Exhaust port silencing device of Roots blower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203500027U true CN203500027U (en) | 2014-03-26 |
Family
ID=50331011
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320609837.7U Expired - Fee Related CN203500027U (en) | 2013-09-30 | 2013-09-30 | Exhaust port silencing device of Roots blower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203500027U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103470511A (en) * | 2013-09-30 | 2013-12-25 | 云南大红山管道有限公司 | Muffler device of Roots blower air exhaust port and manufacturing method of muffler device |
| CN105890097A (en) * | 2016-06-21 | 2016-08-24 | 拓卡奔马机电科技有限公司 | Tail gas silencer for automatic clipping system |
-
2013
- 2013-09-30 CN CN201320609837.7U patent/CN203500027U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103470511A (en) * | 2013-09-30 | 2013-12-25 | 云南大红山管道有限公司 | Muffler device of Roots blower air exhaust port and manufacturing method of muffler device |
| CN103470511B (en) * | 2013-09-30 | 2016-10-05 | 云南大红山管道有限公司 | A kind of muffler device of Roots blower air exhaust port and manufacturing method of muffler device and preparation method thereof |
| CN105890097A (en) * | 2016-06-21 | 2016-08-24 | 拓卡奔马机电科技有限公司 | Tail gas silencer for automatic clipping system |
| CN105890097B (en) * | 2016-06-21 | 2019-01-25 | 拓卡奔马机电科技有限公司 | Tail gas silencing means for automatic cutting system |
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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 |
Granted publication date: 20140326 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |