CN103727239B - The high-efficiency sealing device that a kind of automatic backlash compensates - Google Patents
The high-efficiency sealing device that a kind of automatic backlash compensates Download PDFInfo
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- CN103727239B CN103727239B CN201410007753.5A CN201410007753A CN103727239B CN 103727239 B CN103727239 B CN 103727239B CN 201410007753 A CN201410007753 A CN 201410007753A CN 103727239 B CN103727239 B CN 103727239B
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Abstract
The invention discloses the high-efficiency sealing device that a kind of automatic backlash compensates, comprise bearing support, the two ends of bearing support are fixed with bearing (ball) cover, in bearing support, bearing is installed, the middle part of rotatingshaft is fixed on the inwall of bearing, the two ends sleeve of rotatingshaft is on bearing (ball) cover, described bearing (ball) cover is fixed with oil blocking cover on the end face of bearing side, rotatingshaft sleeve is in oil blocking cover, the middle part of bearing (ball) cover forms cavity, the two ends place of bearing (ball) cover forms manhole, the madial wall of manhole forms inner groovy, seal ring and multiple spring is inserted with in inner groovy, one end of spring is put forth effort on the bottom surface of inner groovy, the other end is put forth effort on the outer wall of seal ring.The seal ring that it is made up of multiple circular arc block seals, and carries out flexible adjustment by spring to seal ring, makes it to fit all the time rotatingshaft in running, accomplishes seamless seal, improve sealing effect.
Description
Technical field:
The present invention relates to technical field of bearings, relate to the high-efficiency sealing device that a kind of automatic backlash compensates in particular.
Background technique:
Some high-speed electric expreess locomotives, in order to ensure that bearing safe operation ensures lubricants capacity, often have larger oil-feed oil pressure and oil mass, this directly increases the pressure of (bearing support central cavity) in grease chamber.In addition, a large amount of oil-feed parts can directly be splashed under the effect of the pressure outward, a part is let out with a large amount of heat sides in bearing shell both sides after entering lubrication district, under the effect of high temperature, this parts of lubricating oil produces atomization, so further increase interior oil chamber pressure, enhance the air-flow toward bearing flowing laterally, this fraction impacts the liquid lubricant originally splashed, dispelled as comparatively little oil droplet, and attend by the mist of oil of more granule, under the effect of air-flow, outwards spring up.This proposes larger technological challenge for sealing.
To this, the sealing configuration that traditional sealing often takes labyrinth seal or felt etc. traditional, because rotor (rotatingshaft) can produce axle center drift in the running, beats also larger, there is gap in running, or itself be no-contact labyrinth seal and there is gap.Meanwhile, along with traditional Sealings such as felt wear and tear gradually in running, gap can progressively increase, but but there is no compensation rate, more increase the weight of mist of oil and oil droplet overflows outside oil catch.Oil catch leakage of oil has a strong impact on the environment of surrounding and the safe operation at other positions, and bring great hidden danger to safe and civilized production, especially under the operating mode that high speed oil inlet quantity is large, bearing seal is the technical barrier that current pole need solve.
Summary of the invention:
The object of the invention is to overcome the deficiencies in the prior art, the high-efficiency sealing device that a kind of automatic backlash compensates is provided, the seal ring that it is made up of multiple circular arc block seals, and by spring, flexible adjustment is carried out to seal ring, make it to fit all the time rotatingshaft in running, accomplish seamless seal, improve sealing effect.
The scheme that the present invention solve the technical problem is:
The high-efficiency sealing device that a kind of automatic backlash compensates, comprise bearing support, the two ends of bearing support are fixed with bearing (ball) cover, in bearing support, bearing is installed, the middle part of rotatingshaft is fixed on the inwall of bearing, the two ends sleeve of rotatingshaft is on bearing (ball) cover, described bearing (ball) cover is fixed with oil blocking cover on the end face of bearing side, rotatingshaft sleeve is in oil blocking cover, the middle part of bearing (ball) cover forms cavity, the two ends place of bearing (ball) cover forms manhole, the madial wall of manhole forms inner groovy, seal ring and multiple spring is inserted with in inner groovy, one end of spring is put forth effort on the bottom surface of inner groovy, the other end is put forth effort on the outer wall of seal ring, rotatingshaft sleeve is in the central through bore of seal ring, the madial wall of seal ring is near the sidewall of rotatingshaft, cavity is between two seal rings of bearing (ball) cover, cavity is connected with the opening that the end face of oil blocking cover forms that is fixed with of bearing (ball) cover, opening is connected with the oil outlet that the bottom sidewall of oil blocking cover forms, oil outlet is connected with the central cavity of bearing support.
Described bearing (ball) cover is fixed with outer baffle ring away from a side end face of bearing, it is ladder central through bore in the middle part of outer baffle ring, ladder central through bore is made up of the first central through bore and the second central through bore, first central through bore is close with bearing (ball) cover, the diameter of the first central through bore is greater than the diameter of the second central through bore, the sidewall of the second central through bore forms the radial convex annular looping extended, rotatingshaft sleeve is in ladder central through bore.
The outer side wall of described bearing (ball) cover forms connecting screw hole, and cooling tube is screwed onto in connecting screw hole, and cooling tube is connected with cavity.
Described seal ring is made up of the circular arc block of more than three or three, the top in the front of circular arc block forms breach, the tail end of reverse side of circular arc block forms breach, the top of second circular arc block that the tail end of circular arc block is adjacent is stitched together, the top of the 3rd the circular arc block that the tail end of second circular arc block is adjacent is stitched together, multiple circular arc block is stitched together and organizes conglobate seal ring in this way, circular arc block sleeve is in inner groovy, the outer side wall of each circular arc block is all fixed with spring, and the spring the other end is fixed on the bottom surface of inner groovy.
After described circular arc block is mixed by polyethylene and graphite, compacting forms.
The bottom sidewall of the first central through bore of described outer baffle ring forms through hole, and through hole communicates with the external world.
Described bearing is sliding bearing.
Described outer baffle ring is that aluminum material is made.
Outstanding effect of the present invention is:
Compared with prior art, the seal ring that it is made up of multiple circular arc block seals, and carries out flexible adjustment by spring to seal ring, makes it to fit all the time rotatingshaft in running, accomplishes seamless seal, improve sealing effect.
Meanwhile, its cooling tube communicates with the cavity of bearing (ball) cover, a small amount of mist of oil entering cavity can be lowered the temperature, make mist of oil again return the central cavity into bearing support by oil outlet.
Its outer baffle ring adopts aluminum material, and the obturator that mainly can improve the auto-compensation of security level and protection inside, from damage, also improves sealability further.
After circular arc block is mixed by polyethylene and graphite, compacting forms, because its polythene material itself has excellent wear-resisting, heat-resisting, decay resistance.In addition after graphite-filled, play the excellent greasy property except graphite, reduce the friction factor of segmental arc, further increase wear resistance, make the wear extent of the sealing in actual use very little, 5 ~ 6 times of normally conventional seals circle, can adapt to the linear speed of 110m/s, this ensure that the wear resistance under operating mode at a high speed.
Accompanying drawing illustrates:
Fig. 1 is structural representation of the present invention;
Fig. 2 is the partial enlarged drawing of Fig. 1;
Fig. 3 is the structural representation of seal ring;
Fig. 4 is another partial enlarged drawing of Fig. 1.
Embodiment:
Embodiment, see as shown in Figures 1 to 4, the high-efficiency sealing device that a kind of automatic backlash compensates, comprise bearing support 100, the two ends of bearing support 100 are fixed with bearing (ball) cover 1, bearing 200 is installed in bearing support 100, the middle part of rotatingshaft 300 is fixed on the inwall of bearing 200, the two ends sleeve of rotatingshaft 300 is on bearing (ball) cover 1, described bearing (ball) cover 1 is fixed with oil blocking cover 2 on the end face of bearing 200 side, rotatingshaft 300 sleeve is in oil blocking cover 2, the middle part of bearing (ball) cover 1 forms cavity 11, the two ends place of bearing (ball) cover 1 forms manhole 12, the madial wall of manhole 12 forms inner groovy 121, seal ring 3 and multiple spring 6 is inserted with in inner groovy 121, one end of spring 6 is put forth effort on the bottom surface of inner groovy 121, the other end is put forth effort on the outer wall of seal ring 3, rotatingshaft 300 sleeve is in the central through bore of seal ring 3, the madial wall of seal ring 3 is near the sidewall of rotatingshaft 300, cavity 11 is between two seal rings 3 of bearing (ball) cover 1, cavity 11 is connected with the opening 13 that the end face of oil blocking cover 2 forms that is fixed with of bearing (ball) cover 1, opening 13 is connected with the oil outlet 21 that the bottom sidewall of oil blocking cover 2 forms, oil outlet 21 is connected with the central cavity of bearing support 100.
Described bearing (ball) cover 1 is fixed with outer baffle ring 4 away from a side end face of bearing 200, it is ladder central through bore 41 in the middle part of outer baffle ring 4, ladder central through bore 41 is made up of the first central through bore 411 and the second central through bore 412, first central through bore 411 is close with bearing (ball) cover 1, the diameter of the first central through bore 411 is greater than the diameter of the second central through bore 412, the sidewall of the second central through bore 412 forms the radial convex annular looping 413 extended, rotatingshaft 300 sleeve is in ladder central through bore 41.
The outer side wall of described bearing (ball) cover 1 forms connecting screw hole 14, and cooling tube 5 is screwed onto in connecting screw hole 14, and cooling tube 5 is connected with cavity 11.
Described seal ring 3 is made up of the circular arc block 31 of more than three or three, the top in the front of circular arc block 31 forms breach 32, the tail end of the reverse side of circular arc block 31 forms breach 32, the top of second circular arc block 31 that the tail end of circular arc block 31 is adjacent is stitched together, the top of the 3rd the circular arc block 31 that the tail end of second circular arc block 31 is adjacent is stitched together, multiple circular arc block 31 is stitched together and organizes conglobate seal ring 3 in this way, circular arc block 31 sleeve is in inner groovy 121, the outer side wall of each circular arc block 31 is all fixed with spring 6, spring 6 the other end is fixed on the bottom surface of inner groovy 121.
After described circular arc block 31 is mixed by polyethylene and graphite, compacting forms, and its polyethylene can be polyethyleneimine.
The bottom sidewall of the first central through bore 411 of described outer baffle ring 4 forms through hole 43, and through hole 43 communicates with the external world.
Described bearing 200 is sliding bearing.
Described outer baffle ring 4 is made for aluminum material.
Working principle: fluid enters central cavity from the oil inlet hole 101 at the top of bearing support 100, wherein a large amount of fluid oils is blocked by oil blocking cover 2, and be back to the central cavity of bearing support 100 from bottom along with the oil outlet 21 of oil blocking cover 2, part granule oil droplet and mist of oil enter in cavity 11 through the seal ring 3 of bearing (ball) cover 1 near one end of bearing 200, seal ring 3 is made up of the circular arc block 31 of more than three or three herein, the top in the front of circular arc block 31 forms breach 32, the tail end of the reverse side of circular arc block 31 forms breach 32, the top of second circular arc block 31 that the tail end of circular arc block 31 is adjacent is stitched together, the top of the 3rd the circular arc block 31 that the tail end of second circular arc block 31 is adjacent is stitched together and forms the structure of dislocation lap joint, seal clearance is there is in such seal ring of avoiding between flexible rear segmental arc, the outer side wall of each circular arc block 31 is all fixed with spring 6, spring 6 the other end is fixed on the bottom surface of inner groovy 121, even if rotatingshaft 300 existence is beated like this, skew, every block circular arc block 31 can be close to rotatingshaft 300 under the effect of spring 6, and along with time break-in, seal clearance between seal ring 3 and rotatingshaft 300 on the contrary can be more and more less, so just greatly control the mist of oil entering cavity 11.
Then, the opening 13 that the end face of oil blocking cover 2 forms that is fixed with through bearing (ball) cover 1 after cooling in the mist of oil of the minute quantity the entered cavity 11 between two seal rings 3 is back in the central cavity of bearing support 100, two seal rings 3, play the effect of the oil mist sealing ensured in cavity 11, now, can accomplish under high-speed bearing complex working condition, also can have excellent sealing effect.Finally, outer baffle ring 4 exempts from external force at this cover seal arrangement of protection and seals further while damaging.
And the gas in part mist of oil in cavity 11 carries out condensing reflux by cooling tube 5.The top of cooling tube 5 is resuscitation apparatus, gas in mist of oil can be carried out separation to discharge, reduce inner pressure, this device can have been bought (also having some to be that resuscitation apparatus bottom directly has screw thread can be connected directly between on connecting screw hole 41 on the market) on the market existing.
Three circular arc blocks 31 of this seal ring 3 can have the gap of 1mm to adjust by the effect of spring 6.
Claims (8)
1. the high-efficiency sealing device of an automatic backlash compensation, comprise bearing support (100), the two ends of bearing support (100) are fixed with bearing (ball) cover (1), bearing (200) is installed in bearing support (100), the middle part of rotatingshaft (300) is fixed on the inwall of bearing (200), the two ends sleeve of rotatingshaft (300) is on bearing (ball) cover (1), it is characterized in that: described bearing (ball) cover (1) is fixed with oil blocking cover (2) on the end face of bearing (200) side, rotatingshaft (300) sleeve is in oil blocking cover (2), the middle part of bearing (ball) cover (1) forms cavity (11), the two ends place of bearing (ball) cover (1) forms manhole (12), the madial wall of manhole (12) forms inner groovy (121), seal ring (3) and multiple spring (6) is inserted with in inner groovy (121), one end of spring (6) is put forth effort on the bottom surface of inner groovy (121), the other end is put forth effort on the outer wall of seal ring (3), rotatingshaft (300) sleeve is in the central through bore of seal ring (3), the sidewall of madial wall near rotatingshaft (300) of seal ring (3), cavity (11) is between two seal rings (3) of bearing (ball) cover (1), cavity (11) is connected with the opening (13) that the end face of oil blocking cover (2) forms that is fixed with of bearing (ball) cover (1), opening (13) is connected with the oil outlet (21) that the bottom sidewall of oil blocking cover (2) forms, oil outlet (21) is connected with the central cavity of bearing support (100).
2. the high-efficiency sealing device of a kind of automatic backlash compensation according to claim 1, it is characterized in that: the side end face away from bearing (200) is fixed with outer baffle ring (4) to described bearing (ball) cover (1), outer baffle ring (4) middle part is ladder central through bore (41), ladder central through bore (41) is made up of the first central through bore (411) and the second central through bore (412), first central through bore (411) is close with bearing (ball) cover (1), the diameter of the first central through bore (411) is greater than the diameter of the second central through bore (412), the sidewall of the second central through bore (412) forms the radial convex annular looping (413) extended, rotatingshaft (300) sleeve is in ladder central through bore (41).
3. the high-efficiency sealing device of a kind of automatic backlash compensation according to claim 1, it is characterized in that: the outer side wall of described bearing (ball) cover (1) forms connecting screw hole (14), cooling tube (5) is screwed onto in connecting screw hole (14), and cooling tube (5) is connected with cavity (11).
4. the high-efficiency sealing device of a kind of automatic backlash compensation according to claim 1, it is characterized in that: described seal ring (3) is made up of the circular arc block (31) of more than three or three, the top in the front of circular arc block (31) forms breach (32), the tail end of the reverse side of circular arc block (31) forms breach (32), the top of second circular arc block (31) that the tail end of circular arc block (31) is adjacent is stitched together, the top of the 3rd the circular arc block (31) that the tail end of second circular arc block (31) is adjacent is stitched together, multiple circular arc block (31) is stitched together and organizes conglobate seal ring (3) in this way, circular arc block (31) sleeve is in inner groovy (121), the outer side wall of each circular arc block (31) is all fixed with spring (6), spring (6) the other end is fixed on the bottom surface of inner groovy (121).
5. the high-efficiency sealing device of a kind of automatic backlash compensation according to claim 4, is characterized in that: after described circular arc block (31) is mixed by polyethylene and graphite, compacting forms.
6. the high-efficiency sealing device of a kind of automatic backlash compensation according to claim 2, it is characterized in that: the bottom sidewall of first central through bore (411) of described outer baffle ring (4) forms through hole (43), and through hole (43) communicates with the external world.
7. the high-efficiency sealing device of a kind of automatic backlash compensation according to claim 1, is characterized in that: described bearing (200) is sliding bearing.
8. the high-efficiency sealing device that compensates of a kind of automatic backlash according to claim 2, is characterized in that: described outer baffle ring (4) is made for aluminum material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410007753.5A CN103727239B (en) | 2014-01-08 | 2014-01-08 | The high-efficiency sealing device that a kind of automatic backlash compensates |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410007753.5A CN103727239B (en) | 2014-01-08 | 2014-01-08 | The high-efficiency sealing device that a kind of automatic backlash compensates |
Publications (2)
| Publication Number | Publication Date |
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| CN103727239A CN103727239A (en) | 2014-04-16 |
| CN103727239B true CN103727239B (en) | 2016-02-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410007753.5A Active CN103727239B (en) | 2014-01-08 | 2014-01-08 | The high-efficiency sealing device that a kind of automatic backlash compensates |
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| CN108374882A (en) * | 2018-05-15 | 2018-08-07 | 高玉琴 | The shaft sealer of speed reducer |
| CN112212007B (en) * | 2020-10-12 | 2022-10-14 | 上海斯晏尔机电设备有限公司 | Underwater mechanical shaft sealing element |
| CN112081825B (en) * | 2020-10-19 | 2022-03-22 | 常熟市天博金属制品有限公司 | Sealed rotating shaft |
| CN112411073B (en) * | 2020-10-22 | 2023-05-12 | 东莞市伟耀纺织有限公司 | Fiber soaking equipment for textile processing |
| CN112253865B (en) * | 2020-10-30 | 2022-06-14 | 贵州电网有限责任公司 | Sealing joint for external pipeline of transformer |
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| US4411437A (en) * | 1982-07-14 | 1983-10-25 | Reliance Electric Company | Seal with face-to-face flat metal sealing washers |
| EP0387122A1 (en) * | 1989-03-08 | 1990-09-12 | Societe Nationale D'etude Et De Construction De Moteurs D'aviation "Snecma" | Shaft seal for a turbo machine |
| CN2709716Y (en) * | 2004-05-18 | 2005-07-13 | 武海 | Floating ring honey comb oil seal |
| CN201225402Y (en) * | 2008-07-11 | 2009-04-22 | 中国石油化工股份有限公司 | Adjustable automatic following and cellular compound oil seal |
| CN201434077Y (en) * | 2009-03-11 | 2010-03-31 | 谭志 | Contact voltage-sharing airtight-type oil baffle |
| CN203670787U (en) * | 2014-01-08 | 2014-06-25 | 申科滑动轴承股份有限公司 | Effective sealing device capable of compensating clearance automatically |
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2014
- 2014-01-08 CN CN201410007753.5A patent/CN103727239B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4411437A (en) * | 1982-07-14 | 1983-10-25 | Reliance Electric Company | Seal with face-to-face flat metal sealing washers |
| EP0387122A1 (en) * | 1989-03-08 | 1990-09-12 | Societe Nationale D'etude Et De Construction De Moteurs D'aviation "Snecma" | Shaft seal for a turbo machine |
| CN2709716Y (en) * | 2004-05-18 | 2005-07-13 | 武海 | Floating ring honey comb oil seal |
| CN201225402Y (en) * | 2008-07-11 | 2009-04-22 | 中国石油化工股份有限公司 | Adjustable automatic following and cellular compound oil seal |
| CN201434077Y (en) * | 2009-03-11 | 2010-03-31 | 谭志 | Contact voltage-sharing airtight-type oil baffle |
| CN203670787U (en) * | 2014-01-08 | 2014-06-25 | 申科滑动轴承股份有限公司 | Effective sealing device capable of compensating clearance automatically |
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| CN103727239A (en) | 2014-04-16 |
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Inventor after: He Jiandong Inventor after: Xu Fang Inventor after: Yang Haiying Inventor after: Zhao Yue Inventor after: Zheng Zhuoying Inventor after: Yang Xueming Inventor before: Yang Haiying Inventor before: Zhao Yue Inventor before: Zheng Zhuoying |
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Free format text: CORRECT: INVENTOR; FROM: YANG HAIYING ZHAO YUE ZHENG ZHUOYING TO: HE JIANDONG XU FANG YANG HAIYING ZHAO YUE ZHENG ZHUOYING YANG XUEMING |
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