CN102840334A - Labyrinth type sealing bearing - Google Patents
Labyrinth type sealing bearing Download PDFInfo
- Publication number
- CN102840334A CN102840334A CN201110165512XA CN201110165512A CN102840334A CN 102840334 A CN102840334 A CN 102840334A CN 201110165512X A CN201110165512X A CN 201110165512XA CN 201110165512 A CN201110165512 A CN 201110165512A CN 102840334 A CN102840334 A CN 102840334A
- Authority
- CN
- China
- Prior art keywords
- sealing
- labyrinth
- tooth
- bearing
- labyrinth type
- 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
Images
Landscapes
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The utility model relates to the field of bearings, in particular to a labyrinth type sealing bearing. The labyrinth type sealing bearing adopts the technical scheme that the labyrinth type sealing bearing comprises a bearing, a retainer ring, a sealing bolt and a labyrinth curved way, wherein the tooth distance on the labyrinth curved way is 6-8 mm, the thicknesses of tooth tips are less than 0.5 mm, and the tooth number is controlled within a range of 6-35. The labyrinth type sealing bearing provided by the invention has the advantages as follows: (1) as gaps between rotating and fixed sealing parts are made in the form of a labyrinth and lubricating greases are filled in the gaps to reinforce a sealing effect, the sealing effect is still very reliable when the environment is comparatively dirty; (2) the smaller the sealing gap is, the larger the sealing tooth number is and the better the sealing effect is; however, the sealing effect is not obviously enhanced after the tooth number is increased to a certain number; therefore, the practical prove that 6-35 teeth are appropriate for shaft end sealing; and (3) when the tooth distance is 6-8 mm and the thicknesses of tooth tips are less than 0.5 mm and a better sealing effect is obtained.
Description
Technical field
The present invention relates to field of bearings, concretely, relate to a kind of labyrinth sealing bearing.
Background technique
Labyrinth seal is to establish the belt sealing tooth that several are arranged in order around the rotating shaft, forms a series of gap and expansion cavitys of damming between tooth and the tooth, and sealed medium produces the purpose that throttle effect reaches the resistance leakage when the gap through tortuous labyrinth.Owing to have the gap between the rotor of labyrinth seal and casing; No solid contact; Needn't lubricate, and allow thermal expansion, adapt to the occasion of high temperature, high pressure, high speed-frequency; This seal form be widely used in steam turbine, gas turbine, compressor, blower axle head and the sealing of inter-stage, the preposition sealing of other motive sealing.
Labyrinth sealing is different according to structural feature, can be divided into: 1, level and smooth formula labyrinth seal: simple in structure, be convenient to make, but sealing effect is poor; 2, dioptric type labyrinth seal: the concavo-convex groove structure of speciality, the structure that this stage teeth matches with tongue and groove makes level and smooth seal clearance become dioptric type; Therefore, increase flow resistance, improved sealing usefulness; But can only be used in the cylinder body or dividing plate of horizonally split face; And seal also will make the horizonally split type, and structure is complicated, is not easy to generally adopt; 3, step labyrinth: analyze it from structure and be similar to level and smooth formula labyrinth seal, and sealing effect is approximate with the dioptric type labyrinth seal.
Summary of the invention
In order to solve the problems of the technologies described above, the object of the present invention is to provide a kind of simple in structurely, be convenient to make, and the cascade labyrinth sealing bearing of good sealing effect.
The technological scheme that the present invention will solve is following: the present invention is made up of bearing, back-up ring, sealing bolt, bent road, labyrinth, and the space width on the Qu Lu of labyrinth is between the 6-8mm, and crown thickness is less than 0.5mm, and the number of teeth is controlled in the 6-35 scope.
The invention has the advantages that:
The labyrinth form is processed in gap between that 1, will rotate and fixing obturator, inserts lubricating grease between the slit with the enhanced leaktightness effect, and when environment was messy, its effect was still very reliable.
2, seal clearance is more little, and the sealing number of teeth is many more, and its sealing effect is good more, but after the number of teeth was increased to some, effect improved not obvious, therefore, facts have proved that shaft end seal is provided with 6-35 tooth and is advisable.
3, space width is between the 6-8mm, and crown thickness is less than 0.5mm, and sealing effect is better.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Embodiment
Reference character shown in Figure 1 is following: bearing 1, back-up ring 2, sealing bolt 3, bent road 4, labyrinth.
The present invention is made up of bearing, back-up ring, sealing bolt, bent road, labyrinth, and the space width on the Qu Lu of labyrinth is between the 6-8mm, and crown thickness is less than 0.5mm, and the number of teeth is controlled in the 6-35 scope.
The invention has the advantages that:
The labyrinth form is processed in gap between that 1, will rotate and fixing obturator, inserts lubricating grease between the slit with the enhanced leaktightness effect, and when environment was messy, its effect was still very reliable.
2, seal clearance is more little, and the sealing number of teeth is many more, and its sealing effect is good more, but after the number of teeth was increased to some, effect improved not obvious, therefore, facts have proved that shaft end seal is provided with 6-35 tooth and is advisable.
3, space width is between the 6-8mm, and crown thickness is less than 0.5mm, and sealing effect is better.
Claims (1)
1. labyrinth sealing bearing; It is characterized in that: the technological scheme that the present invention will solve is following: the present invention is made up of bearing, back-up ring, sealing bolt, bent road, labyrinth; Space width on the Qu Lu of labyrinth is between the 6-8mm, and crown thickness is less than 0.5mm, and the number of teeth is controlled in the 6-35 scope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110165512XA CN102840334A (en) | 2011-06-20 | 2011-06-20 | Labyrinth type sealing bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110165512XA CN102840334A (en) | 2011-06-20 | 2011-06-20 | Labyrinth type sealing bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102840334A true CN102840334A (en) | 2012-12-26 |
Family
ID=47367961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110165512XA Pending CN102840334A (en) | 2011-06-20 | 2011-06-20 | Labyrinth type sealing bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102840334A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2459479Y (en) * | 2000-12-28 | 2001-11-14 | 程玉全 | Sealing assembly structure |
| CN2797741Y (en) * | 2005-04-28 | 2006-07-19 | 上海凯泉泵业（集团）有限公司 | Improved bearing parts |
| CN201739515U (en) * | 2010-05-28 | 2011-02-09 | 浙江佳力科技股份有限公司 | Sealing structure for oil pump bearing lubricating oil |
-
2011
- 2011-06-20 CN CN201110165512XA patent/CN102840334A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2459479Y (en) * | 2000-12-28 | 2001-11-14 | 程玉全 | Sealing assembly structure |
| CN2797741Y (en) * | 2005-04-28 | 2006-07-19 | 上海凯泉泵业（集团）有限公司 | Improved bearing parts |
| CN201739515U (en) * | 2010-05-28 | 2011-02-09 | 浙江佳力科技股份有限公司 | Sealing structure for oil pump bearing lubricating oil |
Non-Patent Citations (3)
| Title |
|---|
| 师素娟,等: "《机械设计基础》", 29 February 2008, article "滚动轴承的密封", pages: 239-240 * |
| 成大先: "《机械设计手册 第五版 第3卷 第10篇》", 31 December 2008, article "润滑与密封", pages: 188-189 * |
| 王金刚: "《石化装备流体密封技术》", 31 August 2007, article "迷宫密封", pages: 219-221 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204511526U (en) | Seal arrangement | |
| CN204239765U (en) | A kind of labyrinth seal structure | |
| CN110553037A (en) | Radial multi-lip labyrinth seal device for rotating shaft | |
| CN113090337A (en) | Reverse shaft sealing device for double-rotor aircraft engine | |
| CN203499731U (en) | High-temperature and high-speed floating ring air film sealing structure | |
| CN210889435U (en) | Sealing structure between rotating parts of compressor | |
| CN102840334A (en) | Labyrinth type sealing bearing | |
| CN204944544U (en) | A kind of dry gas sealing structure based on gas turbine meter | |
| CN202402083U (en) | High-pressure end sealing device of turbine shaft | |
| CN201057084Y (en) | Oil sealing structure of turbosupercharger | |
| CN205371639U (en) | Multistage lip van -type sealing device | |
| CN204921994U (en) | Sealing device is kept apart to combination formula based on dust lip | |
| CN203321669U (en) | Turbocharger intermediate | |
| RU131814U1 (en) | TURBOMETER RADIAL GAP CELL SEAL | |
| CN204201096U (en) | A kind of export-oriented ring gear seal arrangement | |
| CN204201098U (en) | A kind of unidirectional combination ring gear seal arrangement | |
| CN210890111U (en) | Special sealing device for main shaft of wind generating set | |
| CN202047870U (en) | Improved rotor sealing structure of improved 300 MW steam turbine | |
| CN102261382A (en) | Angular contact ball bearing with grease storage groove on outer ring | |
| CN111306304A (en) | Rotary-vane type high-temperature high-pressure gas (liquid) elastic contact dynamic sealing device and preparation method | |
| CN214305281U (en) | Flow guide type contact labyrinth sealing device | |
| CN110617328B (en) | Bidirectional multi-lip sealing device for rotating shaft | |
| CN211778972U (en) | Self-grease-discharging horseshoe-shaped sealing device | |
| CN202708085U (en) | Pressure-maintaining motive sealing structure for continuously rotary heat accumulator | |
| CN203081603U (en) | Labyrinth piston ring |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121226 |