CN202812203U - Oil mist-prevention air seal structure for sliding bearing - Google Patents
Oil mist-prevention air seal structure for sliding bearing Download PDFInfo
- Publication number
- CN202812203U CN202812203U CN201220458115.1U CN201220458115U CN202812203U CN 202812203 U CN202812203 U CN 202812203U CN 201220458115 U CN201220458115 U CN 201220458115U CN 202812203 U CN202812203 U CN 202812203U
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- air
- oil mist
- air cavity
- sliding bearing
- seal ring
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Abstract
The utility model relates to an oil mist-prevention air seal structure for a sliding bearing. A packing is additionally arranged between an air seal cover and a shaft; a double-diameter floating seal ring and a floating seal ring are respectively arranged between a bearing block and the shaft and between the air seal cover and the shaft; a first air cavity is arranged between the bearing block and the air seal cover; and a second air cavity is additionally arranged between the floating seal ring and the packing, so that the structure is provided with a double-air cavity multi-seal structure. When air is exhausted by an inside fan, the air is supplied from the first air cavity and the second air cavity, and therefore, the possibility that the air is exhausted from the bearing block is effectively prevented, and the phenomenon that oil leakage is caused due to the fact that oil mist in the bearing block is pumped out is greatly reduced. Therefore, the oil mist-prevention air seal structure for the sliding bearing has the characteristics that the structure is compact, the sealing effect is good, and the like.
Description
Technical field
The utility model relates to a kind of bearing seal structure, especially a kind of sliding bearing oil mist prevention air seal structure.
Background technique
Sliding bearing is the important support unit in the machinery, many machineries, such as metal-cutting machine tool, steam turbine, motor, generator, decompressor, rotary compressor, rolling mill, internal-combustion engine etc., its main shaft bearing has direct restrictive function for motion, function, acting and the efficient of machinery, directly determines quality and the life-span of machine.Because during the electric machine structure design, motor internal is near the inboard of sliding bearing, often be designed with internal fan, high-speed electric expreess locomotive is in when operation, the internal fan high speed rotating, form powerful negative pressuren zone at cabinet inside, common end cover type sliding bearing is provided with and replenishes together atmospheric air cavity, because tonifying Qi is not enough, causes bleeding in bearing support, mist of oil also is drawn out of with gas, thereby causes leakage of oil.
Summary of the invention
The purpose of this utility model is a kind of simple and compact for structure, sliding bearing oil mist prevention air seal structure that can effectively prevent the leakage of oil that negative pressure causes of design.The technical solution of the utility model is so to realize:
A kind of sliding bearing oil mist prevention air seal structure, comprise bearing support, sealing gland lid, axle, be provided with two footpaths floating seal ring between bearing support and the axle, be provided with floating seal ring and packing between sealing gland lid and the axle, be provided with the first air cavity between described bearing support and the sealing gland lid, be provided with the second air cavity between floating seal ring and the packing in the described sealing gland lid.
The sliding bearing oil mist prevention air seal structure of the utility model design, between sealing gland lid and axle, increased packing, be respectively equipped with two footpath floating seal rings and floating seal ring between the gentle capping of bearing support and the axle, be provided with the first air cavity between bearing support and the sealing gland lid, increased by second air cavity between floating seal ring and the packing, make this structure have two air cavitys, multi-sealing structure, when inboard fan is bled, from the first air cavity and the second air cavity tonifying Qi, effectively prevented from bearing chamber bleed may, thereby greatly reduced that mist of oil in the bearing chamber is drawn out of and the situation that causes leakage of oil.Therefore the utlity model has the characteristics such as compact structure, good sealing effect.
Description of drawings
Accompanying drawing is a kind of structural representation of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, by embodiment, the technical solution of the utility model is done further specific description.
Embodiment: with reference to the accompanying drawings, a kind of sliding bearing oil mist prevention air seal structure, comprise bearing support 1, sealing gland lid 6, axle 8, be provided with two footpaths floating seal ring 5 between bearing support 1 and the axle 8, be provided with floating seal ring 2 and packing 7 between sealing gland lid 6 and the axle 8, be provided with the first air cavity 10 between described bearing support 1 and the sealing gland lid 6, described sealing gland is covered between 6 interior floating seal rings 2 and the packing 7 and is provided with the second air cavity 11.
This structure has two air cavitys, multi-sealing structure, when inboard fan is bled, from the first air cavity 10 and 11 tonifying Qi of the second air cavity, effectively prevented from bearing chamber bleed may, thereby greatly reduced that mist of oil in the bearing chamber is drawn out of and the situation that causes leakage of oil.Therefore the utlity model has the characteristics such as compact structure, good sealing effect.
Claims (1)
1. sliding bearing oil mist prevention air seal structure, comprise bearing support (1), sealing gland lid (6), axle (8), it is characterized in that being provided with between bearing support (1) and the axle (8) two footpaths floating seal ring (5), be provided with floating seal ring (2) and packing (7) between sealing gland lid (6) and the axle (8), be provided with the first air cavity (10) between described bearing support (1) and the sealing gland lid (6), be provided with the second air cavity (11) between described sealing gland lid (6) interior floating seal ring (2) and the packing (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220458115.1U CN202812203U (en) | 2012-09-10 | 2012-09-10 | Oil mist-prevention air seal structure for sliding bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220458115.1U CN202812203U (en) | 2012-09-10 | 2012-09-10 | Oil mist-prevention air seal structure for sliding bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202812203U true CN202812203U (en) | 2013-03-20 |
Family
ID=47871073
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220458115.1U Expired - Lifetime CN202812203U (en) | 2012-09-10 | 2012-09-10 | Oil mist-prevention air seal structure for sliding bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202812203U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103362722A (en) * | 2013-07-31 | 2013-10-23 | 东方电气集团东风电机有限公司 | Air seal device with external power of hydrogenerator |
| CN103615541A (en) * | 2013-11-29 | 2014-03-05 | 张宏伟 | Device preventing oil mist of generator bearing from overflowing |
| CN105465184A (en) * | 2016-01-20 | 2016-04-06 | 江苏金通灵流体机械科技股份有限公司 | Sealing device between sliding shaft and bearing pedestal |
| CN105515262A (en) * | 2016-01-27 | 2016-04-20 | 中电电机股份有限公司 | Sliding bearing double sealing structure |
| CN105526188A (en) * | 2016-01-05 | 2016-04-27 | 武汉光谷科威晶激光技术有限公司 | Direct water cooling bearing structure of fan for fast axis flow CO2 laser |
-
2012
- 2012-09-10 CN CN201220458115.1U patent/CN202812203U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103362722A (en) * | 2013-07-31 | 2013-10-23 | 东方电气集团东风电机有限公司 | Air seal device with external power of hydrogenerator |
| CN103362722B (en) * | 2013-07-31 | 2015-12-23 | 东方电气集团东风电机有限公司 | The gas sealing mechanism of hydraulic turbine generator additionaling power |
| CN103615541A (en) * | 2013-11-29 | 2014-03-05 | 张宏伟 | Device preventing oil mist of generator bearing from overflowing |
| CN103615541B (en) * | 2013-11-29 | 2016-08-17 | 张宏伟 | Prevent the device that dynamo bearing mist of oil overflows |
| CN105526188A (en) * | 2016-01-05 | 2016-04-27 | 武汉光谷科威晶激光技术有限公司 | Direct water cooling bearing structure of fan for fast axis flow CO2 laser |
| CN105465184A (en) * | 2016-01-20 | 2016-04-06 | 江苏金通灵流体机械科技股份有限公司 | Sealing device between sliding shaft and bearing pedestal |
| CN105515262A (en) * | 2016-01-27 | 2016-04-20 | 中电电机股份有限公司 | Sliding bearing double sealing structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130320 |
|
| CX01 | Expiry of patent term |