CN201786938U - Non-contact type gas sealing device for bearing - Google Patents
Non-contact type gas sealing device for bearing Download PDFInfo
- Publication number
- CN201786938U CN201786938U CN2010205395527U CN201020539552U CN201786938U CN 201786938 U CN201786938 U CN 201786938U CN 2010205395527 U CN2010205395527 U CN 2010205395527U CN 201020539552 U CN201020539552 U CN 201020539552U CN 201786938 U CN201786938 U CN 201786938U
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- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The utility model relates to a non-contact type gas sealing device for a bearing, belonging to the machinery manufacturing technical field, is characterized in that a through hole is arranged on a housing and is communicated with a gap between a revolving shaft and the housing; and a joint is fixed in the through hole. The utility model has simple structure, low production cost and long service life and could run in various severe environments. The test proves that compared with the prior art, the utility model could continuously work for twenty six months 24hrs./day in a normal way without abnormal phenomena of decreased precision, increased temperature, high noise or the like; and under the same conditions, the service life of the utility model is more than thirty times of that of a non-contact type centrifugal sealing device so as to greatly reduce processing cost of products in the mechanical industry.
Description
One, technical field:
The utility model relates to a kind of gas-tight sealing, relates in particular to a kind of bearing non-contacting gas seal arrangement, is a kind of associated sealing arrangement for bearings, belongs to machinery manufacturing technology field.
Two, background technique:
Various modern machines nearly all be unable to do without bearing, invade the bearing inside in order to prevent harmful objects such as outside fluid, sewage, dust, foreign matter, will be positioned at the lubricant contamination of bearing inside or wash out, and generally all can adopt seal arrangement.The Designer selects seal arrangement according to the Environmental Conditions of machine, rotating speed height, oiling agent kind, heating situation etc.Seal arrangement mainly contains two big classes.One class is contact seal, its sealing principle is: added seal ring between turning axle and saturating lid, seal ring is different shapes such as Y shape, FA shape, FB shape, FC shape, their matrix is the isoelastic material of rubber, utilizes these elastomers to apply certain contact pressure on turning axle cylindrical slip surface.This sealing effect is good, but friction torque can produce temperature rise, only adapts to the low speed sealing.Another kind seal arrangement is contactless centrifugal seal, its sealing principle: when utilizing the turning axle high speed rotating, self surface drives centrifugal force that air (between turning axle and the saturating lid) rotation produces and suppresses outside harmful substance and enter bearing inside, when the foreign matter of outside when the left end sealed mouth is invaded, harmful objects such as dust, greasy dirt, moisture are all separated under action of centrifugal force, and got rid of in the groove, these harmful objects orifice flow below groove goes out.This sealing is friction not, can not produce temperature rise, and it is applicable to the high speed sealing of general environment.When environment more abominable, when external pressure was big, outside dust, water, sump oil will enter between turning axle and the saturating lid, and the centrifugal pressure that drives the air generation when the axle rotation is during less than ambient pressure, the part of these xenobiotic will be passed the gap and be entered bearing inside, seal failure.Also have a kind of simple and easy sealing in addition, only be applicable to the good and unessential occasion of external environment condition.Now, high speed rotary bearing seal or blank out under rugged environment.High speed rotary is very high to seal request, and it directly affects the working life of bearing, and the low speed revolution can't be satisfied the requirement of existing production technology again.
Three, model utility content:
The purpose of this utility model is exactly can't guarantee bearing sealing problem effectively in order to solve existing high speed rotary bearing seal technology under rugged environment, and high speed rotary is very high to seal request, filled up the blank of high speed rotary associated sealing arrangement for bearings under rugged environment, thereby a kind of new technological scheme is provided.
For achieving the above object, the utility model can be achieved through the following technical solutions:
Bearing non-contacting gas seal arrangement, it is to be provided with turning axle by bearing in housing, is fixed with lid on housing, is provided with the felt circle between saturating lid and turning axle, is provided with a through hole on housing, is fixed with joint in the through hole.
On the housing in the gap between turning axle and the housing, be provided with a through hole, be fixed with joint in the through hole.
The advantage that the utility model is compared with prior art had is: simple in structure, cheap for manufacturing cost, can under various rugged environment, turn round long service life.The new product XYJ-2016 numerical-control screw rod axle spiral rolling track grinding machine that the utility model is produced uses Environmental Conditions: water base cooling liquid in the diamond roller trimming device, 1 kilogram every square centimeter of pressure, 80 liters of flow per minutes, the part of diamond roller trimming device are subjected to cooling liquid and spray, and remaining part is subjected to the closely sputter that cooling liquid is sprayed, through continuous 26 months, 24 hours use of class Three's every day, working properly, precision do not occur and reduce, temperature raises, anomalies such as noise increase.Diamond roller trimming device once used contactless centrifugal seal, only used 26 days just because of seal failure under above-mentioned same condition, caused damage of bearings and can't work.
Four, description of drawings:
Accompanying drawing is a kind of example structure schematic representation of the utility model.
Five, embodiment
Now in conjunction with the accompanying drawings the utility model is described in further details:
A kind of bearing non-contacting gas seal arrangement, it is to be provided with turning axle 1 by bearing in housing 4, on housing 4, be fixed with and cover 3, between saturating lid 3 and turning axle 1, be provided with felt circle 2, be provided with a through hole on the housing 4 and communicating with gap between the housing 4 with turning axle 1, be fixed with joint 5 in the through hole, (present embodiment uses model to joint 5: QLPY1-08-02 46-TZ) be connected with outer source of the gas by filtration, decompression, mist of oil three linked piece and pressure gauge.
Bearing is when high speed rotary, and contact seal can't be used, and externally under the situation that pressure is bigger, contactless centrifugal seal can not be prevented the invasion of outside xenobiotic fully.The main cause that can not prevent is that centrifugal force drives pressure that air produces less than external pressure, address this problem, and it is crucial improving the bearing internal pressure.Imagine and give the inner feeding of Bearing Installation body shell the pressurized air bigger than external pressure, inner air will outwards flow out from the lining under pressure like this, can prevent the invasion of outside xenobiotic fully.Certainly, the pressurized air of feeding itself is answered foreign matters such as free from dust, moisture, greasy dirt, thereby needs the configuration pneumatic triple piece, solves the smart filtration of air, dry problem, regulates gas circuit pressure, and adds suitable lubricant oil.Finished bearing non-contacting gas seal arrangement non-contacting gas sealing (closely similar) according to this imagination a joint 5 just has been installed on housing 4 with simple and easy sealing, disposed the modular, pneumatically powered three linked piece of a cover, pneumatic triple piece and pipeline cost are lower, in addition, also require the gap between turning axle 1 and the saturating lid 3 little, ordinary circumstance annulus radial clearance 0.03～0.1mm gap is more little, and gas consumption is economized more.
XYJ-2016 numerical-control screw rod axle spiral rolling track grinding machine is mainly used in that raceway grinding machine is mainly used in the grinding internal thread in the grinding outside thread, XYJ-2017 numerical control rack piston, MKS1620 numerical control annular groove outside grinding machine is mainly used in the grinding annular groove outside, these three lathes have all been used the utility model, 0.3～1 kilogram every square centimeter of cooling system pressure, 50～80 liters of flow per minutes, using effect is all good.
Claims (2)
1. bearing non-contacting gas seal arrangement, it is to be provided with turning axle (1) by bearing in housing (4), on housing (4), be fixed with lid (3), between saturating lid (3) and turning axle (1), be provided with felt circle (2), it is characterized in that: on housing (4), be provided with a through hole, be fixed with joint (5) in the through hole.
2. a kind of bearing non-contacting gas seal arrangement according to claim 1 is characterized in that: be provided with a through hole on the housing (4) in the gap between turning axle (1) and the housing (4), be fixed with joint (5) in the through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205395527U CN201786938U (en) | 2010-09-20 | 2010-09-20 | Non-contact type gas sealing device for bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205395527U CN201786938U (en) | 2010-09-20 | 2010-09-20 | Non-contact type gas sealing device for bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201786938U true CN201786938U (en) | 2011-04-06 |
Family
ID=43818901
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205395527U Expired - Fee Related CN201786938U (en) | 2010-09-20 | 2010-09-20 | Non-contact type gas sealing device for bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201786938U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102996650A (en) * | 2012-11-26 | 2013-03-27 | 北京七星华创电子股份有限公司 | Gas sealing device for low-speed rotation of main shaft |
-
2010
- 2010-09-20 CN CN2010205395527U patent/CN201786938U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102996650A (en) * | 2012-11-26 | 2013-03-27 | 北京七星华创电子股份有限公司 | Gas sealing device for low-speed rotation of main shaft |
| CN102996650B (en) * | 2012-11-26 | 2015-01-07 | 北京七星华创电子股份有限公司 | Gas sealing device for low-speed rotation of main shaft |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110406 Termination date: 20120920 |