CN102374291A - Improved structure of bearing base sealing ring - Google Patents
Improved structure of bearing base sealing ring Download PDFInfo
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- CN102374291A CN102374291A CN2010102590645A CN201010259064A CN102374291A CN 102374291 A CN102374291 A CN 102374291A CN 2010102590645 A CN2010102590645 A CN 2010102590645A CN 201010259064 A CN201010259064 A CN 201010259064A CN 102374291 A CN102374291 A CN 102374291A
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- ring
- flanged
- bearing support
- seal ring
- flanged ring
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Abstract
The invention relates to an improved structure of a bearing base sealing ring. The improved structure is characterized in that a sealing ring sleeved on a rotating shaft is mutually corresponding to an inner hole formed on the side wall of a bearing base, the outer edge of the sealing ring is provided with multiple parallel flanged rings which are matched with multiple parallel ring form grooves arranged on the inner hole; a first flanged ring of the end of the sealing ring is positioned on the outside of the side wall of the bearing base, the first flanged ring is a convex obtuse angle or an circular arc on a vertical cross-section on which the shaft center is positioned, the guiding oil effect is good, thereby conveniently controlling a gap between the first flanged ring and the side wall of the bearing base; the bottom of a ring groove arranged between the first flanged ring and a second flanged ring is provided with at least a circle of convex reverse spiral diversion trenches, thereby effectively preventing the lubricating oil on the bottom of the ring groove from outward leaking; and multiple backflows are formed from the root of the end face of the first flanged ring to the bottom of each groove uniformly, thereby being capable of leading the stored lubricating oil on the bottom of each groove to back to an inner cavity of the bearing base, and avoiding the phenomenon that the diversion trenches are out of action when too much oil is stored. A combined motive seal structure can effectively prevent the lubricating oil from leaking.
Description
Technical field
The present invention relates to the thin oil lubricant bearing support of centrifuge, relate in particular to a kind of seal ring of bearing support.
Background technique
The thin oil lubricant bearing support of centrifuge is the seal chamber of a hollow; Have endoporus on the sidewall; Rotatingshaft is horizontally through bearing support from endoporus, the Bearing Installation through inside cavity on bearing support, seal ring that is fixed on the rotary bearing of configuration between rotatingshaft and the endoporus; The a plurality of parallel flanged rings of seal ring outer rim upper process, with endoporus on the multiple tracks parallel ring connected in star offered be complementary; Form mazy sealing configuration between the two, and first flanged ring of seal ring end is positioned at the bearing support outside, lubricant oil leaks in the block axis bearing chamber.
But in use; During the oil lubrication cooling; Because bearing high speed rotating; Make lubricating fluid produce and splash still have part fluid to get in the clearance space between inner hole of bearing seat and the seal ring from the gap location between seal ring first flange and the bearing support sidewall, and along with the rotation of seal ring is run to the bearing support outside, caused bearing support the phenomenon of oil leakage to occur.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of bearing support seal ring structure-improved that can prevent effectively that lubricant oil from revealing from fitting surface between seal ring and the inner hole of bearing seat.
The present invention realizes through following technological scheme:
A kind of structure-improved of bearing support seal ring, the seal ring that is sleeved on the rotatingshaft is corresponding with the endoporus on the bearing support sidewall,
The a plurality of parallel flanged rings of seal ring outer rim upper process, with endoporus on the multiple tracks parallel ring connected in star offered be complementary,
First flanged ring of seal ring end is positioned at the bearing support outside,
It is characterized in that:
Said first flanged ring is the obtuse angle or the circular arc of evagination on the vertical cross-section at place, axle center,
Offer the protruding spirality guiding gutter of at least one circle at the bottom of the circular groove between first flanged ring and second flanged ring, the Hand of spiral of guiding gutter is opposite with the sense of rotation of rotatingshaft, and the seal ring diameter that the groove top is located is smaller or equal to diameter of bore,
Evenly offer a plurality of return ports by first flanged ring end face root to the bottom land.
First flanged ring of seal ring innermost layer is adopted the horn mouth design that is outer convex corner or circular arc; Compare with traditional vertical bar shaped first flanged ring, the lubricating oil that can effective guidance be splashed on first flanged ring is back to the bearing support inner chamber, and; Because seal ring is with the rotatingshaft high speed rotating; Must keep certain clearance between seal ring and bearing support sidewall, the endoporus, between traditional vertical bar shaped first flanged ring and the bearing support sidewall a bigger fitting surface arranged, the gap of this fitting surface is difficult to control; Tend to because excesssive gap and leakage of oil is more; And be the obtuse angle of evagination or first flanged ring of circular arc, it is good with the gap control between its top and the bearing support sidewall only to need, and just can more effectively stop the oil that splashes in a large number outwards to be revealed.In general, this gap is chosen as 0.5～1.5mm, can guarantee mutual noninterference mutually between seal ring and the bearing support sidewall, can play seal action preferably again.
First flanged ring of outer convex corner or circular arc has stoped leaking of a large amount of splash lubrication oil; The lubricating oil of little splash will get between seal ring and the inner hole of bearing seat, accumulate in the labyrinth sealing space wherein from the gap of the first flanged ring top and bearing support sidewall; On at the bottom of the circular groove between first flanged ring and second flanged ring, offer the protruding spirality guiding gutter of at least one circle; Because the Hand of spiral of guiding gutter is opposite with the sense of rotation of rotatingshaft; Can effectively stop the leakage fluid that passes first flanged ring continue to the bearing support external leakage, and can be with counter the pushing away of fluid cavity direction in bearing support, be beneficial to fluid from the return port that is opened in bottom land in time return the bearing support inner chamber, to avoid fluid to accumulate when too much guiding gutter at bottom land ineffective.
Return port has two kinds of effects to offer mode preferably: a kind of is axially to open to second flanged ring by the first flanged ring end face root is flat along rotatingshaft, the height such as evagination place of outer convex corner of the return port height and first flanged ring or circular arc; A kind of cavity dumping that is return port on the vertical cross-section at place, axle center in bearing support, axially have angle with rotatingshaft, this angle is 15～30 degree usually, by the first flanged ring end face root to bottom land.The former opening is big, be beneficial to lubricating oil refluxes, and the latter has the angle of inclination, can effectively guide the lubricant oil that is positioned at the bottom of the circular groove of rotatingshaft top to refluxed.
Same, be the backflow effect that guarantees return port, return port should be and evenly is opened in a plurality of on the first flanged ring end, is preferably 4 that symmetry is offered.
Further, for better stopping fluid, can at the bottom of the circular groove, offer the individual pen guiding gutter, and this guiding gutter has 2～4 groove teeth on vertical cross-section, promptly this guiding gutter rotated for 2～4 weeks along the bottom land anchor ring, and how all the choked flow effect of groove tooth be more obvious.
Further again, for guaranteeing the Oil Guide effect of the first flanged ring end face, its vertical cross-section is the obtuse angle of evagination, and the evagination angle is 120～140 degree.
Beneficial effect of the present invention is:
1, the first flanged ring structure of outer convex corner or circular arc can play good Oil Guide effect, and is convenient to control the gap between first flanged ring and the bearing support sidewall;
2, oppositely offer guiding gutter between first flanged ring and second flanged ring, can effectively stop the lubricating oil that gets at the bottom of the circular groove further outwards to be revealed;
3, at the bottom of the circular groove and the return port of offering between the first flanged ring end face, can in time guide the lubricating oil that the accumulates in bottom land into bearing support inner chamber that refluxes, it is ineffective to avoid fluid to accumulate when too much guiding gutter;
4, knockdown movable sealing structure can effectively prevent leaking of lubricant oil.
Description of drawings
Fig. 1 be on the vertical cross-section of axle center place, the schematic representation that cooperates of existing seal ring and bearing support
Fig. 2 be on the vertical cross-section of axle center place, the schematic representation that cooperates of seal ring of the present invention and bearing support
Fig. 3, Fig. 4 are a kind of enlarged diagram of return port structure in the circle scope among Fig. 2
Fig. 5, Fig. 6 are the enlarged diagram of another kind of return port structure in the circle scope among Fig. 2
Fig. 7 is the seal ring stereogram
Among Fig. 1-7: 1 is seal ring, and 1-1 is first flanged ring, and 1-2 is second flanged ring, and 1-3 is a guiding gutter; 1-4 is a return port, and 1-5 is a bottom land, and 2 is the bearing support sidewall, and 2-1 is an endoporus; 3 is rotatingshaft, and 4 are existing seal ring, and 4-1 is vertical bar shaped first flanged ring, and 5 is bearing.
Embodiment
Below in conjunction with accompanying drawing the present invention is described further.
The thin oil lubricant bearing support of centrifuge is the seal chamber of a hollow; Have endoporus 2-1 on the sidewall 2; Rotatingshaft 3 is horizontally through bearing support from endoporus 2-1, the bearing 5 through inside cavity is installed on the bearing support; Existing seal ring 4 that is fixed on the rotary bearing of configuration between rotatingshaft 3 and the endoporus 2-1, a plurality of parallel flanged rings of existing seal ring 4 outer rim upper process, with endoporus 2-1 on the multiple tracks parallel ring connected in star offered be complementary, form mazy sealing configuration between the two; And the vertical bar shaped first flanged ring 4-1 of seal ring end is positioned at bearing support sidewall 2 outsides, and lubricant oil leaks in the block axis bearing chamber.
But in use; During the oil lubrication cooling; Because bearing 5 high speed rotating make lubricating fluid produce and splash, still there is part fluid to get in the clearance space between inner hole of bearing seat 2-1 and the seal ring 4 from the gap location between vertical bar shaped first flanged ring 4-1 and the bearing support sidewall 2; And along with the rotation of existing seal ring 4 is run to the bearing support outside, caused bearing support the phenomenon of oil leakage to occur, shown in arrow among Fig. 1.
The first flanged ring 1-1 among the present invention is the obtuse angle shape of evagination on the vertical cross-section at place, axle center, the evagination angle among Fig. 2 is 140 degree.Compare with traditional vertical bar shaped first flanged ring 4-1; The lubricating oil that can effective guidance be splashed on the first flanged ring 1-1 end face is back to the bearing support inner chamber; And, because seal ring 1 with the rotatingshaft high speed rotating, must keep certain clearance between seal ring 1 and bearing support sidewall 2, the endoporus 2-1; Between traditional vertical bar shaped first flanged ring 4-1 and the bearing support sidewall 2 a bigger fitting surface is arranged; The gap of this fitting surface is difficult to control, tends to because excesssive gap and leakage of oil is more, and is the obtuse angle of evagination or the first flanged ring 1-1 of circular arc; It is good with the gap control between its top and the bearing support sidewall 2 only to need, and just can more effectively stop the oil that splashes in a large number outwards to be revealed.Gap between the first flanged ring 1-1 top and the bearing support sidewall 2 is 1mm here.
The first flanged ring 1-1 of outer convex corner or circular arc has stoped leaking of a large amount of splash lubrication oil; The lubricating oil of little splash will get between seal ring 1 and the inner hole of bearing seat 2-1, accumulate in the labyrinth sealing space wherein from the gap of the first flanged ring 1-1 top and bearing support sidewall 2; On 1-5 at the bottom of the circular groove between the first flanged ring 1-1 and the second flanged ring 1-2, offered the protruding spirality guiding gutter 1-3 of a circle; This guiding gutter 1-3 rotated for 3 weeks, has had three groove teeth on bottom land 1-5; Seal ring 1 diameter at place, groove top makes in the rotation of seal ring 1 in endoporus 2-1 smaller or equal to endoporus 2-1 diameter.Because the Hand of spiral of guiding gutter 1-3 is opposite with the sense of rotation of rotatingshaft 3, can effectively stop the leakage fluid that passes the first flanged ring 1-1 continue to the bearing support external leakage, also can be with counter the pushing away of fluid cavity direction in bearing support; Offer 4 return port 1-4 by the first flanged ring 1-1 end face root to bottom land 1-5 symmetry, return port 1-4 can in time guide the lubricating oil that accumulates in bottom land 1-5 to enter the bearing support inner chamber, and it is ineffective to avoid fluid to accumulate when too much guiding gutter at bottom land 1-5.Fluid backflow direction is shown in arrow among Fig. 2.
Fig. 3～4 are the scheme of offering of a kind of return port 1-4, and return port 1-4 is offered to the second flanged ring 1-2 by the first flanged ring 1-1 end face root vertically, the height such as evagination place of return port 1-4 height and outer convex corner of the first flanged ring 1-1 or circular arc.
Fig. 5～6 are the scheme of offering of another kind of return port 1-4, and return port 1-4 becomes with rotatingshaft 3 axle center 15～30 to spend angles on the vertical cross-section at axle center place, upwards offered to bottom land 1-5 by the first flanged ring 1-1 end face root.
Claims (8)
1. the structure-improved of a bearing support seal ring, the seal ring (1) that is sleeved on the rotatingshaft (3) is corresponding with the endoporus (2-1) on the bearing support sidewall (2),
The a plurality of parallel flanged rings of seal ring (1) outer rim upper process, with endoporus (2-1) on the multiple tracks parallel ring connected in star offered be complementary,
First flanged ring (1-1) of seal ring (1) end is positioned at bearing support sidewall (2) outside,
It is characterized in that:
Said first flanged ring (1-1) is the obtuse angle or the circular arc of evagination on the vertical cross-section at place, axle center,
Offer the protruding spirality guiding gutter (1-3) of at least one circle at the bottom of the circular groove between first flanged ring (1-1) and second flanged ring (1-2) on (1-5); The sense of rotation of the Hand of spiral of guiding gutter (1-3) and rotatingshaft (3) is opposite; Seal ring (1) diameter at place, groove top is smaller or equal to endoporus (2-1) diameter
Evenly offer a plurality of return ports (1-4) by first flanged ring (1-1) end face root to bottom land (1-5).
2. bearing support seal ring structure-improved according to claim 1; It is characterized in that: said return port (1-4) is offered to second flanged ring (1-2) by first flanged ring (1-1) end face root vertically, the height such as evagination place of return port (1-4) height and outer convex corner of first flanged ring (1-1) or circular arc.
3. bearing support seal ring structure-improved according to claim 1 is characterized in that: said return port (1-4) has angle with rotatingshaft (3) axle center, is upwards offered to bottom land (1-5) by first flanged ring (1-1) end face root on the vertical cross-section at place, axle center.
4. bearing support seal ring structure-improved according to claim 3 is characterized in that: said angle is 15～30 degree.
5. bearing support seal ring structure-improved according to claim 1 is characterized in that: the guiding gutter at the bottom of the said circular groove on (1-5) (1-3) has 2～4 groove teeth on the vertical cross-section at place, axle center.
6. bearing support seal ring structure-improved according to claim 1 is characterized in that: said first flanged ring (1-1) is the obtuse angle of evagination on the vertical cross-section at place, axle center, and the evagination angle is 120～140 degree.
7. bearing support seal ring structure-improved according to claim 1 is characterized in that: said return port (1-4) is symmetrical 4 of offering on first flanged ring (1-1) end face.
8. bearing support seal ring structure-improved according to claim 1 is characterized in that: the gap between said first flanged ring (1-1) top and the bearing support sidewall (2) is 0.5～1.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010259064.5A CN102374291B (en) | 2010-08-20 | 2010-08-20 | Improved structure of bearing base sealing ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010259064.5A CN102374291B (en) | 2010-08-20 | 2010-08-20 | Improved structure of bearing base sealing ring |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102374291A true CN102374291A (en) | 2012-03-14 |
| CN102374291B CN102374291B (en) | 2014-07-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010259064.5A Expired - Fee Related CN102374291B (en) | 2010-08-20 | 2010-08-20 | Improved structure of bearing base sealing ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102374291B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112983761A (en) * | 2021-03-31 | 2021-06-18 | 东方电气集团东方电机有限公司 | Sliding bearing lubricating system and sliding bearing |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994002751A1 (en) * | 1992-07-23 | 1994-02-03 | Reliance Electric Industrial Company | Seal assembly |
| CN1807938A (en) * | 2006-01-13 | 2006-07-26 | 寿光市康跃增压器有限公司 | End sealing device for compressor of turbosupercharger |
| CN201339717Y (en) * | 2008-12-26 | 2009-11-04 | 艾志工业技术集团有限公司 | Integral type labyrinth seal |
| CN201412514Y (en) * | 2009-06-18 | 2010-02-24 | 桐乡市华强密封件有限公司 | Bearing sealing ring |
| CN201772065U (en) * | 2010-08-20 | 2011-03-23 | 上海市离心机械研究所有限公司 | Sealing ring for bearing seat |
-
2010
- 2010-08-20 CN CN201010259064.5A patent/CN102374291B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994002751A1 (en) * | 1992-07-23 | 1994-02-03 | Reliance Electric Industrial Company | Seal assembly |
| CN1807938A (en) * | 2006-01-13 | 2006-07-26 | 寿光市康跃增压器有限公司 | End sealing device for compressor of turbosupercharger |
| CN201339717Y (en) * | 2008-12-26 | 2009-11-04 | 艾志工业技术集团有限公司 | Integral type labyrinth seal |
| CN201412514Y (en) * | 2009-06-18 | 2010-02-24 | 桐乡市华强密封件有限公司 | Bearing sealing ring |
| CN201772065U (en) * | 2010-08-20 | 2011-03-23 | 上海市离心机械研究所有限公司 | Sealing ring for bearing seat |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112983761A (en) * | 2021-03-31 | 2021-06-18 | 东方电气集团东方电机有限公司 | Sliding bearing lubricating system and sliding bearing |
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| Publication number | Publication date |
|---|---|
| CN102374291B (en) | 2014-07-23 |
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Granted publication date: 20140723 Termination date: 20190820 |