CN207212953U - Bearing gas sealing mechanism - Google Patents
Bearing gas sealing mechanism Download PDFInfo
- Publication number
- CN207212953U CN207212953U CN201720896833.XU CN201720896833U CN207212953U CN 207212953 U CN207212953 U CN 207212953U CN 201720896833 U CN201720896833 U CN 201720896833U CN 207212953 U CN207212953 U CN 207212953U
- Authority
- CN
- China
- Prior art keywords
- end cap
- bearing block
- bearing
- fixed cover
- fixed
- 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.)
- Expired - Fee Related
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- Sealing Of Bearings (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The utility model discloses a kind of bearing gas sealing mechanism, including lower rotary shaft and the bearing block being fixed in housing, the lower rotary shaft includes shaft extension portion, cylinder, end cap and the ring flange with through hole, on cylinder, lower end is connected with ring flange and end cap respectively, shaft extension portion upper end is fixed on end cap lower end, shaft extension subordinate is stretched at end in bearing block by the bearing rotational support in bearing block, fixed cover one is set with shaft extension portion, it is provided between end cap and bearing block and is sleeved in shaft extension portion and is fixed on the fixed cover two on bearing block, sealing ring is provided between fixed cover two and fixed cover one, end cap lower surface is provided with annular groove, if end cap is provided with the passage that capable person's annular groove connects with cylinder bore, the upper surface of fixed cover two is then provided with the annular flange in inserting end bezel ring, connected in star.The utility model is simple in construction, cost is low, and air impervious effect can be played to the bearing in lower rotary shaft bearing block.
Description
Technical field
Technical field of bearings is the utility model is related to, especially a kind of bearing gas sealing mechanism.
Background technology
Powder concentrator is to provide certain air quantity and pressure by single external system, by the mixing of air and high concentrate dust
Thing is transported in powder concentrator from grinding machine, and the separation of particle diameter of different sizes is carried out to mixture.A kind of hollow main shaft of powder concentrator (see
Fig. 2) include upper rotating shaft, middle rotating shaft and lower rotary shaft, middle rotating shaft upper and lower side passes through a pair of ring flanges and upper rotating shaft and lower rotary shaft respectively
It is connected, upper rotating shaft and lower rotary shaft are respectively by bearing block rotational support.Middle rotating shaft is provided with rotor, and main shaft passes through shaft coupling and driving
Device is connected.Upper shaft bearing seat is arranged on the outside of powder concentrator, its dust contact in powder concentrator of getting along well, therefore close
Envelope design is also simpler；Lower rotary shaft bearing block is operated in the high concentrate dust in powder concentrator, using outside framework oil seal and machine
Tool labyrinth seal structure, portions of client reflection bearing temperature is too high, is spent sometimes up to 100 more.Through looking into, find in bearing block
Grease in have a large amount of dust confusion, this is shown to be because bearing seal is unreliable, cause dust enter Bearing inner oil
Fat and the overheating for causing bearing.Although being in negative-pressure operation in powder concentrator, dust is not easily accessible Bearing inner, due to
When powder concentrator operates, influenceed by factors such as grinding machine process of lapping, its internal gas flow, air pressure and the particulate dust of conveying are all
Instantaneous property complicated and changeable can be produced, dust still easily enters Bearing inner in this case.
Utility model content
The technical problems to be solved in the utility model is：Overcome deficiency in the prior art, there is provided a kind of simple in construction, low
The bearing gas sealing mechanism of cost.
Technical scheme is used by the utility model solves its technical problem：A kind of bearing gas sealing mechanism, including under
Rotating shaft and the bearing block being fixed in housing, the lower rotary shaft include shaft extension portion, cylinder, end cap and the ring flange with through hole,
Cylinder upper and lower end is connected with ring flange and end cap respectively, and shaft extension portion upper end is fixed on end cap lower end, and shaft extension subordinate stretches into bearing in end
By the bearing rotational support in bearing block in seat, fixed cover one is set with shaft extension portion, suit is provided between end cap and bearing block
In shaft extension portion and the fixed cover two that is fixed on bearing block, sealing ring is provided between fixed cover two and fixed cover one, under end cap
End face is provided with annular groove, if end cap is provided with the passage that capable person's annular groove connects with cylinder bore, the upper end of fixed cover two
Face is then provided with the annular flange in inserting end bezel ring, connected in star.
To reduce vapour lock, the annular flange is tapered.
The bearing block lower end is fixed with closure.
The sealing ring is outside framework oil seal.
The beneficial effects of the utility model are：The utility model is improved former mechanical labyrinth formula sealing structure, is borrowed
The negative pressure working condition helped in powder concentrator, the air outside powder concentrator is introduced admittedly at shaft coupling by hollow main shaft
Surely discharged after covering in the gap between two and end cap, such dust cannot propagate into bearing block, it is achieved thereby that under
The aeroseal effect of shaft bearing seat inner bearing.
Brief description of the drawings
The utility model is further illustrated with embodiment below in conjunction with the accompanying drawings.
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the structural representation of powder concentrator hollow main shaft.
In figure：1. bearing block；11. fixed cover two；111. annular flange；12. closure；2. lower rotary shaft；21. shaft extension portion；
22. cylinder；23. end cap；24. ring flange；25. bearing；26. fixed cover one；27. annular groove；28. passage；3. skeleton is oily
Envelope；4. shaft coupling；Rotating shaft on 5.；Rotating shaft in 6..
Embodiment
The utility model is further described presently in connection with accompanying drawing.These accompanying drawings are simplified schematic diagram, only with
Illustration illustrates basic structure of the present utility model, therefore it only shows the composition relevant with the utility model.
A kind of bearing gas sealing mechanism as shown in Figure 1, including lower rotary shaft 2 and the bearing block 1 that is fixed in housing, it is described
Lower rotary shaft 2 include shaft extension portion 21, cylinder 22, end cap 23 and with through hole ring flange 24, the upper and lower end of cylinder 22 respectively with flange
Disk 24 and end cap 23 are connected, and the upper end of shaft extension portion 21 is fixed on the lower end of end cap 23, and shaft extension portion 21 is stretched into lower end in bearing block 1 by bearing
The rotational support of bearing 25 in seat 1, fixed cover 1 is set with shaft extension portion 21, suit is provided between end cap 23 and bearing block 1
In shaft extension portion 21 and the fixed cover 2 11 that is fixed on bearing block 1, skeleton is provided between fixed cover 2 11 and fixed cover 1
Oil sealing 3, the lower surface of end cap 23 are provided with annular groove 27, if end cap 23 connects provided with capable person's annular groove 27 with the endoporus of cylinder 22
Passage 28, the upper surface of fixed cover 2 11 is then provided with the annular flange 111 that stretches into the annular groove 27 of end cap 23, annular flange
111 is tapered.
The lower end of bearing block 1 is fixed with closure 12.
When powder concentrator works, due to being in negative pressure in powder concentrator, extraneous air passes sequentially through hollow at shaft coupling 4
Upper rotating shaft 5, the through hole of ring flange 24, hollow middle rotating shaft 6 and the through hole of ring flange 24 be introduced into the endoporus of 2 cylinder of lower rotary shaft 22,
Pass sequentially through some passages 28, annular groove 27 and the annular flange on end cap 23 again into the air in the endoporus of cylinder 22
Discharged behind the gap between gap and fixed cover 2 11 and end cap 23 between 111, powder concentrator shell is prevented so as to serve
The effect that internal high concentrate dust enters in the bearing block 1 of lower rotary shaft 2.
For above-mentioned embodiment only to illustrate technical concepts and features of the present utility model, its object is to allow be familiar with this skill
The personage of art can understand content of the present utility model and be carried out, and protection model of the present utility model can not be limited with this
Enclose, all equivalent change or modifications made according to the utility model Spirit Essence, should all cover in protection model of the present utility model
In enclosing.
Claims (4)
1. a kind of bearing gas sealing mechanism, including lower rotary shaft and the bearing block that is fixed in housing, it is characterized in that：The lower rotary shaft
Including shaft extension portion, cylinder, end cap and the ring flange with through hole, cylinder upper and lower end is connected with ring flange and end cap respectively, shaft extension
Portion upper end is fixed on end cap lower end, and shaft extension subordinate is stretched at end in bearing block by the bearing rotational support in bearing block, in shaft extension portion
Fixed cover one is set with, is provided between end cap and bearing block and is sleeved in shaft extension portion and is fixed on the fixed cover two on bearing block,
Sealing ring is provided between fixed cover two and fixed cover one, end cap lower surface is provided with annular groove, if end cap is provided with capable person's annular
The passage that groove connects with cylinder bore, the upper surface of fixed cover two are then provided with the annular flange in inserting end bezel ring, connected in star.
2. bearing gas sealing mechanism according to claim 1, it is characterized in that：The annular flange is tapered.
3. bearing gas sealing mechanism according to claim 1, it is characterized in that：The bearing block lower end is fixed with closure.
4. bearing gas sealing mechanism according to claim 1, it is characterized in that：The sealing ring is outside framework oil seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720896833.XU CN207212953U (en) | 2017-07-24 | 2017-07-24 | Bearing gas sealing mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720896833.XU CN207212953U (en) | 2017-07-24 | 2017-07-24 | Bearing gas sealing mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207212953U true CN207212953U (en) | 2018-04-10 |
Family
ID=61813848
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720896833.XU Expired - Fee Related CN207212953U (en) | 2017-07-24 | 2017-07-24 | Bearing gas sealing mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207212953U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108591280A (en) * | 2018-04-21 | 2018-09-28 | 李贤玉 | A kind of bearing air seal set |
-
2017
- 2017-07-24 CN CN201720896833.XU patent/CN207212953U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108591280A (en) * | 2018-04-21 | 2018-09-28 | 李贤玉 | A kind of bearing air seal set |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| 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: 20180410 Termination date: 20180724 |