CN103047143A - Sealing impeller for Roots blower - Google Patents
Sealing impeller for Roots blower Download PDFInfo
- Publication number
- CN103047143A CN103047143A CN2013100338437A CN201310033843A CN103047143A CN 103047143 A CN103047143 A CN 103047143A CN 2013100338437 A CN2013100338437 A CN 2013100338437A CN 201310033843 A CN201310033843 A CN 201310033843A CN 103047143 A CN103047143 A CN 103047143A
- Authority
- CN
- China
- Prior art keywords
- impeller
- sealing
- gas
- labyrinth seal
- roots blower
- 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.)
- Pending
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 abstract description 5
- 230000000630 rising effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
Images
Landscapes
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The invention relates to a sealing impeller for a Roots blower. The sealing impeller is characterized in that the end surface of the impeller is provided with a labyrinth seal. The sealing impeller provided by the invention has the advantages that when gas passes through gas chambers and a channel of the labyrinth seal, the sections of the labyrinth seal are continually expanded and narrowed, and a gradual expanding process of gas flow is achieved, so that the gas pressure difference of a high pressure region and a low pressure region is reduced, and the leaking of the gas is effectively controlled. The sealing impeller with the technical scheme can guarantee that the gas flow is reduced when the Roots blower delivers the gas, and the temperature rise caused by backflow in the shell is effectively controlled.
Description
Technical field
This patent belongs to the technical field of sealing technology of blower, particularly relates to a kind of Roots blower with sealing impeller.
Background technique
Roots blower is a kind of equipment of supplying gas for gas and strength conveying, owing to having relative movement between impeller and wallboard, in order not interfere or to rub, just certainly exists the gap between the end face of impeller and the wallboard, and may just there be the leakage of gas in this gap.The leakage of gas has reduced the efficient of blower fan, has improved the energy consumption of blower fan, is unfavorable for the work of blower fan.
Summary of the invention
This patent provides a kind of Roots blower with the sealing impeller for solving the technical problem that exists in the known technology, and the sealing impeller can be avoided or significantly reduce the end face of impeller and the Leakage Gas between the wallboard.
A kind of Roots blower is with sealing impeller, and it is characterized in that: the end face at impeller is provided with labyrinth seal.
This patent can also be by the following technical solutions:
The sealing direction of described labyrinth seal is the zone of high pressure of UNICOM's impeller and the direction of low pressure area.
The cross section of described labyrinth seal on the sealing direction is rectangular wave, and the cross section on body of wall is straight line, alternately forms narrower passage and wider air chamber between the end face of sealing impeller and the body of wall.
Advantage and good effect that this patent has are:
Because this patent adopts technique scheme, at air-flow during through the air chamber of labyrinth seal and passage since the cross section constantly expansion dwindle, reach the flaring process of air-flow, thereby reduce the draught head of zone of high pressure and low pressure area, effectively control the leakage of gas.Above technological scheme both can guarantee the minimizing of Roots blower leakage rate when carrying gas, also effectively controlled enclosure interior because the rising of the temperature of the generation that refluxes.
Description of drawings
Fig. 1 is the structural representation of this patent;
Fig. 2 is the plan view of Fig. 1.
Among the figure: 1, passage; 2, air chamber; 3, impeller; 4, body of wall.
Embodiment
For further understanding model utility content, the Characteristic of this patent, hereby exemplify following examples, and cooperate accompanying drawing to be described in detail as follows:
See also Fig. 1 and Fig. 2, a kind of Roots blower is with the sealing impeller, is provided with labyrinth seal at the end face of impeller 3.The sealing direction of described labyrinth seal is the zone of high pressure of UNICOM's impeller and the direction of low pressure area.The cross section of described labyrinth seal on the sealing direction is rectangular wave, and the cross section on body of wall 4 is straight line, alternately forms narrower passage 1 and wider air chamber 2 between the end face of sealing impeller and the body of wall.
The operating principle of this patent is:
See also Fig. 1, the left side is the high-pressure area among Fig. 1, and the right side is the area of low pressure.The cross section that high voltage terminal gas circulates during through the channel position between impeller and the wallboard diminishes, and flow velocity raises, so pressure reduces; When arriving air chamber, because the sectional area of circulation increases, the pressure rising has just reduced the pressure reduction between zone of high pressure and the low pressure area like this, and pressure reduction is little, has naturally just reduced the leakage rate of gas, thereby plays the effect of sealing.Improve the efficient of blower fan, reduced energy consumption.When air-flow these air chambers of process and passage, because constantly expanding, the cross section dwindles, consumed the energy of gas, naturally also reduced the leakage rate of gas.Above technological scheme both can guarantee the minimizing of Roots blower flow when carrying gas, also effectively controlled enclosure interior because the rising of the temperature of the generation that refluxes.
Although the above is described the preferred embodiment of this patent by reference to the accompanying drawings, but this patent is not limited to above-mentioned embodiment, above-mentioned embodiment only is schematic, be not restrictive, those of ordinary skill in the art is under the enlightenment of this patent, not breaking away from the scope situation that this patent aim and claim protect, can also make a lot of forms, for example: 1, the shape in the air chamber is done camber or semicircle; 2 so that among Fig. 2 fluted direction all towards the center of impeller.These all belong within the protection domain of this patent.
Claims (3)
1. a Roots blower is with sealing impeller, and it is characterized in that: the end face at impeller is provided with labyrinth seal.
2. sealing impeller as claimed in claim 1, it is characterized in that: the sealing direction of described labyrinth seal is the zone of high pressure of UNICOM's impeller and the direction of low pressure area.
3. sealing impeller as claimed in claim 1 is characterized in that: the cross section of described labyrinth seal on the sealing direction is rectangular wave, and the cross section on body of wall is straight line, alternately forms narrower passage and wider air chamber between the end face of sealing impeller and the body of wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100338437A CN103047143A (en) | 2013-01-29 | 2013-01-29 | Sealing impeller for Roots blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100338437A CN103047143A (en) | 2013-01-29 | 2013-01-29 | Sealing impeller for Roots blower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103047143A true CN103047143A (en) | 2013-04-17 |
Family
ID=48059926
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013100338437A Pending CN103047143A (en) | 2013-01-29 | 2013-01-29 | Sealing impeller for Roots blower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103047143A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103204385A (en) * | 2013-04-28 | 2013-07-17 | 山东省章丘鼓风机股份有限公司 | Wear-resistant rotary feeder with labyrinth seal structures on rotor end surface |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59224402A (en) * | 1983-06-03 | 1984-12-17 | Oval Eng Co Ltd | Non-engagement flow meter or prime mover of volume type |
| US5090879A (en) * | 1989-06-20 | 1992-02-25 | Weinbrecht John F | Recirculating rotary gas compressor |
| CN2235515Y (en) * | 1995-12-01 | 1996-09-18 | 山东省章丘鼓风机厂 | New structure of impeller of Roots blower or vacuum pump |
| JP2000064803A (en) * | 1998-08-13 | 2000-02-29 | Tochigi Fuji Ind Co Ltd | Fluid machine |
| CN1477310A (en) * | 2002-08-23 | 2004-02-25 | 株式会社丰田自动织机 | Axle sealing structure for vacuum pump |
| CN201187453Y (en) * | 2008-04-24 | 2009-01-28 | 张文永 | Rotor of Roots blower |
| CN203081763U (en) * | 2013-01-29 | 2013-07-24 | 天津市天鼓机械制造有限公司 | Sealing impeller for Roots blower |
-
2013
- 2013-01-29 CN CN2013100338437A patent/CN103047143A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59224402A (en) * | 1983-06-03 | 1984-12-17 | Oval Eng Co Ltd | Non-engagement flow meter or prime mover of volume type |
| US5090879A (en) * | 1989-06-20 | 1992-02-25 | Weinbrecht John F | Recirculating rotary gas compressor |
| CN2235515Y (en) * | 1995-12-01 | 1996-09-18 | 山东省章丘鼓风机厂 | New structure of impeller of Roots blower or vacuum pump |
| JP2000064803A (en) * | 1998-08-13 | 2000-02-29 | Tochigi Fuji Ind Co Ltd | Fluid machine |
| CN1477310A (en) * | 2002-08-23 | 2004-02-25 | 株式会社丰田自动织机 | Axle sealing structure for vacuum pump |
| CN201187453Y (en) * | 2008-04-24 | 2009-01-28 | 张文永 | Rotor of Roots blower |
| CN203081763U (en) * | 2013-01-29 | 2013-07-24 | 天津市天鼓机械制造有限公司 | Sealing impeller for Roots blower |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103204385A (en) * | 2013-04-28 | 2013-07-17 | 山东省章丘鼓风机股份有限公司 | Wear-resistant rotary feeder with labyrinth seal structures on rotor end surface |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201876123U (en) | Device for reducing air leakage rate between sintering annular cooling machine table and smoke hood | |
| CN203960288U (en) | The air cooling equipment of annealing furnace | |
| CN203081763U (en) | Sealing impeller for Roots blower | |
| CN103047143A (en) | Sealing impeller for Roots blower | |
| CN203081762U (en) | Sealing impeller of fan | |
| CN201721122U (en) | Drying oven for photogravure press | |
| CN103062058A (en) | Sealed impeller of fan | |
| CN209212650U (en) | A kind of efficient pressure face wind wheel | |
| CN103062125B (en) | A kind of centrifugal blower | |
| CN207093446U (en) | The centrifugal fan that disk is slotted before and after a kind of impeller | |
| CN208565074U (en) | A kind of centrifugal blower with guide vane and radome fairing | |
| CN201867065U (en) | Device for reducing air leakage ratio of ends of sintering circular cooler bellows | |
| CN204562015U (en) | A kind of vacuum cleaner main suction pipe with PVC sealing ring | |
| CN204175657U (en) | A kind of rotary press modelling is used for the fluid director of large fan | |
| CN203083088U (en) | Air conditioner air duct structure and vertical air conditioner with same | |
| CN210118285U (en) | Centrifugal fan shell, centrifugal fan and clothes dryer | |
| CN202851974U (en) | Tooth-shaped structure capable of self-restraining effective flow area | |
| CN205740362U (en) | A kind of air type ozonator | |
| CN109162959A (en) | A kind of efficient pressure face wind wheel | |
| CN215391284U (en) | Natural gas blow gun for heat preservation furnace | |
| CN205131789U (en) | Film capper cooling block | |
| CN208442076U (en) | A kind of Power generator fan sealing structure | |
| CN207963452U (en) | A kind of blanking cooling device applied to tunnel drier | |
| CN204941826U (en) | A kind of environment-friendly and energy-efficient oilless air compressor valve plate | |
| CN201705732U (en) | High efficient low noise non surging fire smoke discharging axial flow fan |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20130417 |