CN102116307A - Labyrinth-type sealing device for bearing on centrifugal pump - Google Patents
Labyrinth-type sealing device for bearing on centrifugal pump Download PDFInfo
- Publication number
- CN102116307A CN102116307A CN 201010614061 CN201010614061A CN102116307A CN 102116307 A CN102116307 A CN 102116307A CN 201010614061 CN201010614061 CN 201010614061 CN 201010614061 A CN201010614061 A CN 201010614061A CN 102116307 A CN102116307 A CN 102116307A
- Authority
- CN
- China
- Prior art keywords
- bearing
- cover
- oil baffle
- baffle disc
- ball
- 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
Images
Abstract
The invention discloses a labyrinth-type sealing device for a bearing on a centrifugal pump. The labyrinth-type sealing device provided by the invention is installed at the pump shaft of a cooling pump and is positioned at the outer side of the bearing, the bearing is installed between the inner chamber of a bearing body and the pump shaft; the labyrinth-type sealing device comprises an oil retaining disk and a bearing end cover; the oil retaining disk comprises a sleeve and a retaining disk which extends longitudinally on the outer surface of the inner side section of the sleeve; the edge of the retaining disk is bent outwards into an edge cover; the oil retaining disk is fixed on the pump shaft and is close to the bearing; the bearing end cover comprises an outer cover and an inner ring which is positioned on the inner edge end surface of the outer cover and extends towards the bearing side axially; the inner side end of the inner ring extends radially into a flange; the inner cavity surface of the bearing end cover is provided with a plurality of labyrinth-type sealing grooves; the bearing end cover is fixed on the bearing body and is positioned at the outer side of the oil retaining disk; the inner ring of the bearing end cover is sleeved on the sleeve of the oil retaining disk; the inner diameter of the bearing end cover and the outer diameter of the sleeve are in clearance fit; and the flange on the bearing end cover and the edge cover on the oil rataining disk are in clearance fit.
Description
Technical field
The present invention relates to a kind of labyrinth-type excluder that is used for the bearing on the centrifugal pump.
Background technique
The gland seal assembly that is used on the centrifugal pump comprises mechanical seal and bearing enclosure, and bearing enclosure is in order to stop foreign material to enter bearing, and the lubricant oil in the bearing support is carried out sealing, prevents that lubricant oil is from the bearing support endoluminal leak.Traditional bearing seal hairiness felt seal, lip-type packing and seal ring, felt sealing be along with the rotation of pump shaft, the oppressed and ovalize of soft felt, and make seepage the slit of lubricant oil between pump shaft and felt, so sealing effect is relatively poor; Developed into employing afterwards again and at the inner chamber of bearing (ball) cover outside framework oil seal is set, the structure of outside framework oil seal is complicated, so cost is higher.
Summary of the invention
The objective of the invention is provides a kind of labyrinth-type excluder that is used for the bearing on the centrifugal pump in order to overcome the deficiencies in the prior art, and it can guarantee under the good situation of sealing effect mechanical friction power also to be accomplished minimum, can not influence the efficient of pump.
The technological scheme that realizes above-mentioned purpose is: a kind of labyrinth-type excluder that is used for the bearing on the centrifugal pump, be installed on the pump shaft of described centrifugal pump and be positioned at the outside of described bearing, described Bearing Installation is between the inner chamber and pump shaft of bearing support, described labyrinth-type excluder comprises oil baffle disc, bearing (ball) cover and O-ring seals, wherein:
Described oil baffle disc comprises sleeve and the block plate that radially extends on the outer surface of the medial segment of this sleeve, the edge of this block plate is that 14 °～16 ° mode bends cover on one side with the angle with its axis laterally, and described oil baffle disc is fixed on the described pump shaft and near described bearing;
Described O-ring seals is located between the sleeve interior surface and described pump shaft of described oil baffle disc;
Described bearing (ball) cover comprises enclosing cover and encircles in axially extended towards the bearing side on the inner peripheral end surfaces of this enclosing cover, should radially extend a flange by the interior free end that encircles, the inner cavity surface of described bearing (ball) cover is provided with some labyrinth sealing grooves, described bearing (ball) cover is fixed on the described bearing support and is positioned at the outside of described oil baffle disc, and the inner ring sleeve of described bearing (ball) cover is on the sleeve of described oil baffle disc, so that described labyrinth sealing groove is facing to the sleeve of described oil baffle disc;
Sleeve outer diameter on the internal diameter of described bearing (ball) cover and the described oil baffle disc is a Spielpassung;
Limit cover on flange on the described bearing (ball) cover and the described oil baffle disc is for Spielpassung, so that the limit enclosure on the described oil baffle disc is outside the flange of bearing (ball) cover.
The above-mentioned labyrinth-type excluder that is used for the bearing on the centrifugal pump, wherein, the outer surface of the flange on the described bearing (ball) cover is a conical surface, the internal surface of limit on described oil baffle disc cover is the adaptive conical surface of tapering with the outer surface of this flange.
The above-mentioned labyrinth-type excluder that is used for the bearing on the centrifugal pump, wherein, the gap between the sleeve outer diameter on the internal diameter of described bearing (ball) cover and the described oil baffle disc is 0.204～0.296mm; Gap between the front-end face of the block plate on the ear end face of the flange on the described bearing (ball) cover and the described oil baffle disc is 1～1.5mm.
The above-mentioned labyrinth-type excluder that is used for the bearing on the centrifugal pump wherein, also can be provided with locking nut and packing ring between described oil baffle disc and the described bearing.
The technological scheme that is used for the labyrinth-type excluder of the bearing on the centrifugal pump of the present invention is made up of oil baffle disc and bearing (ball) cover, has characteristics simple in structure, economical and practical.It utilizes the moving direction that changes lubricant oil, stop lubricant oil to produce axial flow and spilt the trend of bearing (ball) cover, but through the tortuous circuitous gap of the mazy type that forms between bearing (ball) cover and the oil baffle disc, leakage rate is minimum, effectively guaranteed the normal use of bearing, it can guarantee under the good situation of sealing effect mechanical friction power also to be accomplished minimum, can not influence the efficient of pump.
Description of drawings
Fig. 1 is the structural representation that is used for the labyrinth-type excluder of the bearing on the centrifugal pump of the present invention;
Fig. 2 is the structural representation of the oil baffle disc in the labyrinth-type excluder of the present invention;
Fig. 3 is the structural representation of the bearing (ball) cover in the labyrinth-type excluder of the present invention.
Embodiment
In order to understand technological scheme of the present invention better, below by embodiment particularly and be described in detail in conjunction with the accompanying drawings:
See also Fig. 1 to Fig. 3, the labyrinth-type excluder that is used for the bearing on the centrifugal pump of the present invention is installed in the pump shaft 1 of centrifugal pump and is positioned at the outside of bearing 2, and bearing 2 is installed between the inner chamber and pump shaft 1 of bearing support 3.This labyrinth-type excluder comprises oil baffle disc 4, bearing (ball) cover 5 and O-ring seals 6.Wherein:
Oil baffle disc 4 comprises sleeve 41 and the block plate 42 that radially extends on the medial segment outer circumferential face of this sleeve 41, Yi Bian the edge of this block plate 42 is that 14 °～16 ° mode bends and covers 43 with the angle α with its axis laterally, oil baffle disc 4 is fixed on the pump shaft 1 by Cock screw 40 and near bearing 2;
Bearing (ball) cover 5 comprise enclosing cover 51 and on the inner peripheral end surfaces of this enclosing cover 51 towards the bearing side axially extended in ring 52, encircle 52 free end in this and radially extend a flange 53, the inner cavity surface of bearing (ball) cover 5 is provided with twice labyrinth sealing groove 54; Bearing (ball) cover 5 is fixed on the bearing support 3 and is positioned at the outside of oil baffle disc 4, and the interior ring 52 of bearing (ball) cover 5 is enclosed within outside the sleeve 41 of oil baffle disc 4, so that labyrinth sealing groove 54 is facing to the sleeve 41 of oil baffle disc 4;
O-ring seals 6 is located between sleeve 41 internal surfaces and pump shaft 1 of oil baffle disc 4.
Sleeve 41 external diameters on the internal diameter of bearing (ball) cover 5 and the oil baffle disc 4 are Spielpassung, and the gap delta between them is 0.204～0.296mm.
It is Spielpassung that flange 53 on the bearing (ball) cover 5 covers 43 with the limit on the oil baffle disc 4, so that the cover of the limit on the oil baffle disc 4 43 is enclosed within outside the flange 53 of bearing (ball) cover 5.Gap L between the ear end face of the flange 53 on the bearing (ball) cover 5 and the front-end face of the block plate 42 on the oil baffle disc 4 is 1～1.5mm.
The outer surface of the flange 53 on the bearing (ball) cover 5 is a conical surface, and the internal surface of limit on the oil baffle disc 4 cover 43 is the adaptive conical surface of tapering with the outer surface of this flange 53.
Also can be provided with locking nut 7 and packing ring 8 between oil baffle disc 4 and the bearing 2.
The centripetal force that in the centrifugal pump operation process, produces, when making bearing oil produce axial flow, owing to be provided with O-ring seals 6 between the internal surface of oil baffle disc 4 and the pump shaft 1, therefore lubricant oil can not be from the slit seepage between oil baffle disc 4 and the pump shaft 1, and at first be subjected to the stopping of block plate 42 of oil baffle disc 4, under the action of centrifugal force of block plate 42, force lubricant oil to change the former direction that axially flows, be thrown toward very soon block plate 42 around, lubricant oil well can be remained in the space of 5 of bearing support 3 and bearing (ball) covers, rely on the oil level discrepancy in elevation and turning effort to make lubricant oil get back in the chamber of bearing support 3 and cooling again by the spill port of bearing support 3 bottoms, form circulation together, can guarantee stability and reliability that bearing 2 lubricates.A part produces axial flow and spills the trend of bearing (ball) cover at the lubricant oil in block plate 42 outsides, through the tortuous circuitous gap of the bearing (ball) cover 5 and the mazy type of oil baffle disc 4 formation, because multichannel is multiple to be stopped, reduces pressure, leakage rate is effectively suppressed, leakage rate is minimum, has effectively guaranteed the normal use of bearing 2.And external dust and other impurities will stop dust and other impurities to enter the trend of bearing (ball) cover 5 through stopping by the multiple of labyrinth sealing groove 54 on the bearing (ball) cover 5 equally.
Those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the present invention, and be not to be used as limitation of the invention, as long as in connotation scope of the present invention, all will drop in claims scope of the present invention the above embodiment's variation, modification.
Claims (4)
1. labyrinth-type excluder that is used for the bearing on the centrifugal pump, be installed on the pump shaft of described centrifugal pump and be positioned at the outside of described bearing, described Bearing Installation is between the inner chamber and pump shaft of bearing support, described labyrinth-type excluder comprises oil baffle disc, bearing (ball) cover and O-ring seals, it is characterized in that
Described oil baffle disc comprises sleeve and the block plate that radially extends on the outer surface of the medial segment of this sleeve, the edge of this block plate is that 14 °～16 ° mode bends cover on one side with the angle with its axis laterally, and described oil baffle disc is fixed on the described pump shaft and near described bearing;
Described O-ring seals is located between the sleeve interior surface and described pump shaft of described oil baffle disc;
Described bearing (ball) cover comprises enclosing cover and encircles in axially extended towards the bearing side on the inner peripheral end surfaces of this enclosing cover, should radially extend a flange by the interior free end that encircles, the inner cavity surface of described bearing (ball) cover is provided with some labyrinth sealing grooves, described bearing (ball) cover is fixed on the described bearing support and is positioned at the outside of described oil baffle disc, and the inner ring sleeve of described bearing (ball) cover is on the sleeve of described oil baffle disc, so that described labyrinth sealing groove is facing to the sleeve of described oil baffle disc;
Sleeve outer diameter on the internal diameter of described bearing (ball) cover and the described oil baffle disc is a Spielpassung;
Limit cover on flange on the described bearing (ball) cover and the described oil baffle disc is for Spielpassung, so that the limit enclosure on the described oil baffle disc is outside the flange of bearing (ball) cover.
2. the labyrinth-type excluder that is used for the bearing on the centrifugal pump according to claim 1, it is characterized in that, the outer surface of the flange on the described bearing (ball) cover is a conical surface, and the internal surface of limit on described oil baffle disc cover is the adaptive conical surface of tapering with the outer surface of this flange.
3. the labyrinth-type excluder that is used for the bearing on the centrifugal pump according to claim 1 is characterized in that, the gap between the sleeve outer diameter on the internal diameter of described bearing (ball) cover and the described oil baffle disc is 0.204～0.296mm; Gap between the front-end face of the block plate on the ear end face of the flange on the described bearing (ball) cover and the described oil baffle disc is 1～1.5mm.
4. the labyrinth-type excluder that is used for the bearing on the centrifugal pump according to claim 1 is characterized in that, also can be provided with locking nut and packing ring between described oil baffle disc and the described bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010614061 CN102116307B (en) | 2010-12-30 | 2010-12-30 | Labyrinth-type sealing device for bearing on centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010614061 CN102116307B (en) | 2010-12-30 | 2010-12-30 | Labyrinth-type sealing device for bearing on centrifugal pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102116307A true CN102116307A (en) | 2011-07-06 |
| CN102116307B CN102116307B (en) | 2012-06-20 |
Family
ID=44215202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010614061 Active CN102116307B (en) | 2010-12-30 | 2010-12-30 | Labyrinth-type sealing device for bearing on centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102116307B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105298901A (en) * | 2015-10-19 | 2016-02-03 | 季裕成 | Oil slinger of centrifugal pump bearing |
| CN106438444A (en) * | 2016-12-14 | 2017-02-22 | 宜兴市灵谷塑料设备有限公司 | Oil flinger of pump bearing box |
| WO2023050525A1 (en) * | 2021-09-29 | 2023-04-06 | 进越机电有限公司 | Cutting pump rotor fixing structure |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1334407A (en) * | 2000-07-14 | 2002-02-06 | 鄢平安 | High-speed centrifugal pump |
| WO2007096736A1 (en) * | 2006-02-20 | 2007-08-30 | Winsome Engineering (Pty) Ltd | Pump seal apparatus |
| CN201162716Y (en) * | 2008-03-05 | 2008-12-10 | 长沙天鹅工业泵股份有限公司 | Non-leakage thin oil lubrication bearing of double-suction pump |
| JP2010156204A (en) * | 2008-12-26 | 2010-07-15 | Hitachi Ltd | Radial flow fluid machine |
| CN201599230U (en) * | 2009-12-14 | 2010-10-06 | 上海邦浦实业集团有限公司 | Novel bearing gland with sealing function |
| CN201627928U (en) * | 2010-04-29 | 2010-11-10 | 太原重工股份有限公司 | Combined sealing device of input shaft of gear box |
| CN201925216U (en) * | 2010-12-30 | 2011-08-10 | 上海阿波罗机械股份有限公司 | Labyrinth sealing device for bearing used on centrifugal pump |
-
2010
- 2010-12-30 CN CN 201010614061 patent/CN102116307B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1334407A (en) * | 2000-07-14 | 2002-02-06 | 鄢平安 | High-speed centrifugal pump |
| WO2007096736A1 (en) * | 2006-02-20 | 2007-08-30 | Winsome Engineering (Pty) Ltd | Pump seal apparatus |
| CN201162716Y (en) * | 2008-03-05 | 2008-12-10 | 长沙天鹅工业泵股份有限公司 | Non-leakage thin oil lubrication bearing of double-suction pump |
| JP2010156204A (en) * | 2008-12-26 | 2010-07-15 | Hitachi Ltd | Radial flow fluid machine |
| CN201599230U (en) * | 2009-12-14 | 2010-10-06 | 上海邦浦实业集团有限公司 | Novel bearing gland with sealing function |
| CN201627928U (en) * | 2010-04-29 | 2010-11-10 | 太原重工股份有限公司 | Combined sealing device of input shaft of gear box |
| CN201925216U (en) * | 2010-12-30 | 2011-08-10 | 上海阿波罗机械股份有限公司 | Labyrinth sealing device for bearing used on centrifugal pump |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105298901A (en) * | 2015-10-19 | 2016-02-03 | 季裕成 | Oil slinger of centrifugal pump bearing |
| CN106438444A (en) * | 2016-12-14 | 2017-02-22 | 宜兴市灵谷塑料设备有限公司 | Oil flinger of pump bearing box |
| WO2023050525A1 (en) * | 2021-09-29 | 2023-04-06 | 进越机电有限公司 | Cutting pump rotor fixing structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102116307B (en) | 2012-06-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6196408B1 (en) | Sealing device | |
| CN104769338A (en) | Oil seal | |
| AU2016304974B2 (en) | Sealing structure for bearing | |
| CN103238012B (en) | Seal arrangement and sealing configuration | |
| CN102116307B (en) | Labyrinth-type sealing device for bearing on centrifugal pump | |
| JP2008069840A (en) | Power transmission structure | |
| JP5896115B2 (en) | Sealing device | |
| CN203051766U (en) | Floating oil seal component and mechanical device with same | |
| JP2009103209A (en) | Sealing device | |
| JP2009257485A (en) | Sealing device | |
| CN201925216U (en) | Labyrinth sealing device for bearing used on centrifugal pump | |
| WO2015180928A1 (en) | Radial seal with contacting and non-contacting portions | |
| WO2017094599A1 (en) | Seal device | |
| JP2015232364A (en) | Sealing device | |
| JP2017106528A (en) | Sealing device | |
| CN104747723A (en) | Efficient shaft sealing structure of screw compressor | |
| CN105402416A (en) | Sealing ring for rotating shaft | |
| JP2009074589A (en) | Sealing device | |
| US11131387B2 (en) | Sealing ring and seal arrangement comprising such a sealing ring | |
| JP2010265949A (en) | Sealing device | |
| JP7118781B2 (en) | sealing device | |
| JP2006083981A (en) | Sealing device | |
| CN202301155U (en) | Oil seal device for pump | |
| JP5823290B2 (en) | Needle bearing assembly with sealing device | |
| AU2014101112A4 (en) | Sealing Structure of Hub Bearing Unit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 |