CN102003403A - Rotary shaft sealing device - Google Patents
Rotary shaft sealing device Download PDFInfo
- Publication number
- CN102003403A CN102003403A CN 201010590149 CN201010590149A CN102003403A CN 102003403 A CN102003403 A CN 102003403A CN 201010590149 CN201010590149 CN 201010590149 CN 201010590149 A CN201010590149 A CN 201010590149A CN 102003403 A CN102003403 A CN 102003403A
- Authority
- CN
- China
- Prior art keywords
- impeller
- section
- spiral
- rotary shaft
- spiral seal
- 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.)
- Granted
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 55
- 238000000429 assembly Methods 0.000 claims description 5
- 230000000712 assembly Effects 0.000 claims description 5
- 239000003638 chemical reducing agent Substances 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 10
- 239000007788 liquid Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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Abstract
The invention discloses a rotary shaft sealing device comprising a sealing cavity in which a spiral sealing section and a parking sealing section are sequentially and axially arranged, an impeller spiral sealing section is also arranged between the spiral sealing section and the parking sealing section and is an impeller sealing assembly comprising an impeller seat sleeve and an impeller, the impeller is fixed on a rotary shaft by the impeller seat sleeve, a rotary sleeve on the tail end of the spiral sealing section extends to the inner circumference of the impeller, and blades of the impeller are forward curved blades. The sealing device has the advantages of simple structure, short sealed shaft length, good sealing effect and long service life.
Description
Technical field
The present invention relates to a kind of sealing device for rotary shaft, especially a kind of running shaft non-contact sealing arrangement.
Background technique
Sealing to running shaft in the prior art is divided into contact seal and noncontact seal two big classes, contact seal comprises material filling type sealing and mechanical seal, the material filling type sealing exists surface friction drag big, working life is short, shortcomings such as consumption of power is big, though mechanical seal has solved aforesaid drawbacks, but, mechanical seal self also exists complex structure, the requirement on machining accuracy height, problems such as cost of production height, the noncontact seal that with the spiral seal is representative then has simple in structure, be easy to processing, parts depreciation is little, advantages such as long service life, but, spiral seal also exists to have only when running shaft reaches certain rotating speed and could realize shaft sealing, and sealing effect is bad when stopping or during the slow-speed of revolution.China utility model patent CN2082339 discloses a kind of labyrinth spiral sealing device with parking sealer, the sealing device solves sealing problem of spiral seal under the slow-speed of revolution or vehicle stop state, but, the sealing load of this seal arrangement depends on the length of sealing screw, when the bigger sealing load of needs, will increase the length of sealing screw, therefore, increased the size of seal arrangement, and the parking sealer part also will be born certain pressure under the state of spiral seal proper functioning, causes reduce the working life of parking sealing arrangement.
Summary of the invention
The technical problem that invention will solve is: a kind of sealing device for rotary shaft is provided, and the sealing apparatus structure is simple, length weak point, good sealing effect, the long service life of the shared axle of sealing.
The technological scheme that the technical solution problem is adopted: a kind of sealing device for rotary shaft, comprise Seal cage, in Seal cage, set gradually spiral seal section, parking sealer section vertically, in spiral seal section and the intersegmental impeller spiral seal section that also is provided with of parking sealer, the impeller seals assembly of described impeller spiral seal section for constituting by impeller cover for seat and impeller, impeller is fixed on the running shaft by the impeller cover for seat, the rotary sleeve of spiral seal section end extends to the impeller inner circumference, and the blade of impeller is a forward curved vane.
As improvement of the present invention: described impeller cover for seat is the ladder reducer socket, and the excircle of impeller cover for seat and impeller linkage section is provided with the spiral seal groove.
As a further improvement on the present invention: described impeller is multistage, and impeller is arranged vertically successively.
Further improve as of the present invention: described impeller is a two-stage, and the fixed cover of spiral seal section end extends to first order impeller inner circumference, and the rotary sleeve of spiral seal section end extends to second level impeller inner circumference again.
The excircle that extends to the fixed cover of first order impeller inner circumference is provided with the spiral seal groove that cooperates with the spiral seal of first order impeller inner circumference.
Improve as another kind of the present invention: the end in the spiral seal section is provided with the pressure release ring cavity.
As preferred version of the present invention: described parking sealer section is a labyrinth seal assemblies.
Beneficial effect: sealing device for rotary shaft of the present invention, owing to adopted at spiral seal section and the intersegmental technical characteristics that also is provided with impeller spiral seal section of parking sealer, rotate by running shaft impeller black box, to leak to the guiding fluid impeller inner circumference of impeller outer circumference from the spiral seal section, cooperate with the spiral seal of impeller inner circumference by the rotary sleeve that extends to the impeller inner circumference, leak liquid is caught up with to revealing source, therefore, the sealing effect of sealing device for rotary shaft of the present invention is better, when reaching the identical sealing load of common spiral seal, the infiltration length of needed spiral seal can shorten more than 30%, reduced to seal the length of shared axle, and can break through the constraint of spiral seal design parameter, remedy spiral seal sealing effect defect of bad when the slow-speed of revolution by the suitable intensification spiral seal section spiral fluted degree of depth, simultaneously, owing to increased impeller spiral seal section, the pressure that the parking sealer section is born when making the axle rotation significantly reduces, the pressure state that goes to zero has prolonged working life of Sealing; Because having adopted described impeller cover for seat is the ladder reducer socket, the excircle of impeller cover for seat and impeller linkage section is provided with the technical characteristics of spiral seal groove, the leak liquid of impeller section remnants can be caught up with to the impeller liquid entering hole when rotated, by the inner circumference place of wing pump, stop remaining leakage liquid to enter and its contiguous parking sealer section to impeller; Because having adopted described impeller is two-stage, the fixed cover of spiral seal section end extends to first order impeller inner circumference, the rotary sleeve of spiral seal section end extends to the technical characteristics of second level impeller inner circumference, makes that sealing effect of the present invention is better, and the pressure that can bear is improved; Owing to adopted the excircle of the fixed cover that extends to first order impeller inner circumference to be provided with the technical characteristics of the spiral seal groove that cooperates with the spiral seal of first order impeller inner circumference, can reduce the amount of leakage of liquid to the sencond stage impeller excircle, reduce the leakage pressure of sencond stage impeller excircle, make the sealing effect of seal arrangement of the present invention further improve; Owing to adopted the technical characteristics that is provided with the pressure release ring cavity at the end of spiral seal section, the liquid that is pumped into by impeller can be assigned in the multi-head spiral groove of spiral seal section uniformly, make that seal arrangement work of the present invention is more stable; Owing to adopted labyrinth seal assemblies as the parking sealer section, match with the impeller spiral seal section and the spiral seal section of its front end, make running shaft under parking and rotary state, can both obtain best sealing effect.
Description of drawings
The present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.
Fig. 1 is the structural representation of sealing device for rotary shaft of the present invention;
Fig. 2 is the sectional drawing of impeller black box in the sealing device for rotary shaft of the present invention;
Fig. 3 is that the A of Fig. 2 is to sectional drawing.
Embodiment
As shown in Figure 1, sealing device for rotary shaft of the present invention comprises Seal cage, sets gradually spiral seal section, impeller spiral seal section, parking sealer section in Seal cage vertically.Described spiral seal section is made of fixed cover 2 and rotary sleeve 1, is provided with the spiral seal groove on the excircle of rotary sleeve; Described parking sealer section is a labyrinth seal assemblies 5; Described impeller spiral seal section is an impeller seals assembly 3.Impeller seals assembly 3 is made of impeller cover for seat 32 and impeller 31 as shown in Figure 2, impeller is fixed on the running shaft 6 by the impeller cover for seat, the impeller cover for seat is the ladder reducer socket, the excircle of impeller cover for seat and impeller linkage section 321 is provided with the spiral seal groove, as shown in Figure 3, the blade 310 of impeller is a forward curved vane.The rotary sleeve 4 of spiral seal section end extends to the impeller inner circumference during assembling.For the liquid that is pumped into by impeller can be assigned in the multi-head spiral groove of spiral seal section uniformly, be provided with pressure release ring cavity 8 at the end of spiral seal section.In the present embodiment, in order to improve the sealing effect sencond stage impeller of on the impeller seals assembly, arranging successively vertically, be respectively first order impeller 311 and second level impeller 312, its assembling as shown in Figure 1, the fixed cover of spiral seal section end extends to first order impeller 311 inner circumferences, be provided with the spiral seal groove that cooperates with the spiral seal of first order impeller inner circumference on the excircle 7 of the fixed cover that extends to first order impeller inner circumference, the rotary sleeve 4 of spiral seal section end extends to second level impeller 312 inner circumferences.In order to obtain the better sealing effect multi-stage impeller of can on the impeller seals assembly, arranging successively vertically.
Claims (8)
1. sealing device for rotary shaft, comprise Seal cage, in Seal cage, set gradually spiral seal section, parking sealer section vertically, it is characterized in that: in spiral seal section and the intersegmental impeller spiral seal section that also is provided with of parking sealer, described impeller spiral seal section is the impeller seals assembly (3) that is made of impeller cover for seat (32) and impeller (31), impeller is fixed on the running shaft by the impeller cover for seat, the rotary sleeve (4) of spiral seal section end extends to the impeller inner circumference, and the blade of impeller (310) is a forward curved vane.
2. a kind of sealing device for rotary shaft according to claim 1 is characterized in that: described impeller cover for seat is the ladder reducer socket, and the excircle of impeller cover for seat and impeller linkage section (321) is provided with the spiral seal groove.
3. a kind of sealing device for rotary shaft according to claim 2 is characterized in that: described impeller is multistage, and impeller is arranged vertically successively.
4. a kind of sealing device for rotary shaft according to claim 3, it is characterized in that: described impeller is a two-stage, the fixed cover of spiral seal section end extends to first order impeller (311) inner circumference, and the rotary sleeve (4) of spiral seal section end extends to second level impeller (312) inner circumference.
5. a kind of sealing device for rotary shaft according to claim 4 is characterized in that: the excircle (7) that extends to the fixed cover of first order impeller inner circumference is provided with the spiral seal groove that cooperates with the spiral seal of first order impeller inner circumference.
6. according to each described a kind of sealing device for rotary shaft of claim 1 to 5, it is characterized in that: the end in the spiral seal section is provided with pressure release ring cavity (8).
7. according to each described a kind of sealing device for rotary shaft of claim 1 to 5, it is characterized in that: described parking sealer section is labyrinth seal assemblies (5).
8. a kind of sealing device for rotary shaft according to claim 6 is characterized in that: described parking sealer section is labyrinth seal assemblies (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105901491A CN102003403B (en) | 2010-12-16 | 2010-12-16 | Rotary shaft sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105901491A CN102003403B (en) | 2010-12-16 | 2010-12-16 | Rotary shaft sealing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102003403A true CN102003403A (en) | 2011-04-06 |
| CN102003403B CN102003403B (en) | 2012-07-25 |
Family
ID=43811029
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105901491A Expired - Fee Related CN102003403B (en) | 2010-12-16 | 2010-12-16 | Rotary shaft sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102003403B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103352867A (en) * | 2013-07-04 | 2013-10-16 | 浙江大学 | Sealing device for pump shaft |
| CN105673552A (en) * | 2016-01-25 | 2016-06-15 | 李廷伟 | Shutdown sealing device for nuclear power main pump |
| CN110410334A (en) * | 2019-06-29 | 2019-11-05 | 浙江威肯特智能机械有限公司 | A kind of bitumenpump |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2082339U (en) * | 1991-02-28 | 1991-08-07 | 北京化工学院 | Labyrinth sealing with sealing function at stop |
| CN1057704A (en) * | 1991-08-10 | 1992-01-08 | 杜同水轮机推广设计研究所 | Wearless and leakproof sealing element for main shaft of hydraulic turbine |
| DE4127300A1 (en) * | 1991-06-15 | 1993-02-25 | Albrecht Dipl Ing Kayser | COMBINED SLIDE AND SPIRAL GROOVE AXIAL SHAFT SEAL |
| JPH07139634A (en) * | 1993-11-16 | 1995-05-30 | Mitsubishi Cable Ind Ltd | Rotary shaft seal |
| CN2644725Y (en) * | 2003-09-27 | 2004-09-29 | 上海连成（集团）有限公司 | Dynamic sealing device |
| CN201884325U (en) * | 2010-12-16 | 2011-06-29 | 李廷伟 | Sealing device of rotating shaft |
-
2010
- 2010-12-16 CN CN2010105901491A patent/CN102003403B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2082339U (en) * | 1991-02-28 | 1991-08-07 | 北京化工学院 | Labyrinth sealing with sealing function at stop |
| DE4127300A1 (en) * | 1991-06-15 | 1993-02-25 | Albrecht Dipl Ing Kayser | COMBINED SLIDE AND SPIRAL GROOVE AXIAL SHAFT SEAL |
| CN1057704A (en) * | 1991-08-10 | 1992-01-08 | 杜同水轮机推广设计研究所 | Wearless and leakproof sealing element for main shaft of hydraulic turbine |
| JPH07139634A (en) * | 1993-11-16 | 1995-05-30 | Mitsubishi Cable Ind Ltd | Rotary shaft seal |
| CN2644725Y (en) * | 2003-09-27 | 2004-09-29 | 上海连成（集团）有限公司 | Dynamic sealing device |
| CN201884325U (en) * | 2010-12-16 | 2011-06-29 | 李廷伟 | Sealing device of rotating shaft |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103352867A (en) * | 2013-07-04 | 2013-10-16 | 浙江大学 | Sealing device for pump shaft |
| CN103352867B (en) * | 2013-07-04 | 2016-01-20 | 浙江大学 | A kind of pump shaft sealing device |
| CN105673552A (en) * | 2016-01-25 | 2016-06-15 | 李廷伟 | Shutdown sealing device for nuclear power main pump |
| CN105673552B (en) * | 2016-01-25 | 2017-12-22 | 李晓燕 | A kind of nuclear power main pump parking sealing arrangement |
| CN110410334A (en) * | 2019-06-29 | 2019-11-05 | 浙江威肯特智能机械有限公司 | A kind of bitumenpump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102003403B (en) | 2012-07-25 |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Yan Xiaolin Inventor after: Long Liqun Inventor after: Wu Liujun Inventor after: Jiang Hongpeng Inventor before: Li Tingwei Inventor before: Gao Guoqin Inventor before: Cheng Rongxin Inventor before: Fu Tao |
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| TR01 | Transfer of patent right |
Effective date of registration: 20171211 Address after: No. 9, song Hai Road, Nanning, the Guangxi Zhuang Autonomous Region Patentee after: Nanning LIANG Qing District Science and Technology Information Institute Address before: 112700 Liaoning province Diaobingshan city workers Street No. 6 in Tiefa energy limited liability company thermal power plant ash factory Patentee before: Li Tingwei |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190723 Address after: 530000 Unit A-2107, Longteng A, Shengshi, 33 Keyuan Avenue, Xixiangtang District, Nanning City, Guangxi Zhuang Autonomous Region Patentee after: Guangxi Zhongke Zheng Liang Technology Service Co., Ltd. Address before: No. 9 Gehai Road, Liangqing District, Nanning City, Guangxi Zhuang Autonomous Region Patentee before: Nanning LIANG Qing District Science and Technology Information Institute |
|
| 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: 20120725 Termination date: 20191216 |