CN103591148B - A kind of rotating sealing device of farm machinery - Google Patents
A kind of rotating sealing device of farm machinery Download PDFInfo
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- CN103591148B CN103591148B CN201310603314.6A CN201310603314A CN103591148B CN 103591148 B CN103591148 B CN 103591148B CN 201310603314 A CN201310603314 A CN 201310603314A CN 103591148 B CN103591148 B CN 103591148B
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- bearing
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- pole shoe
- ring
- shell
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- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
- Sealing Of Bearings (AREA)
Abstract
The invention discloses a kind of rotating sealing device of farm machinery, be provided with shell, shell covers on the main shaft of bearing outer end, sequentially be provided with from inside to outside: O RunddichtringO, pressure balance chamber, interior pole shoe, permanent magnet ring, every magnetic baffle ring, outer pole shoe and end cover, on described interior pole shoe, the outerface of spindle that covers every magnetic baffle ring, outer pole shoe, be provided with several teeth groove, in this teeth groove, be filled with magnetic fluid; The alignment of shafts has the pressurized gas inlet hole be communicated with pressure balance chamber; The outer circumferential face of inside and outside pole shoe is provided with seal ring; Shell is provided with flange plate; The pressurized gas inlet hole of the alignment of shafts is connected with a pressure regulator; End cover is provided with pressure transducer.The present invention is applicable to the sealing of farm machinery bearing, structure improvement, can reduce the fault of bearing, improves the working life of bearing.
Description
Technical field
The present invention relates to a kind of machinery technology, specifically a kind of seal arrangement of rotation portion of machinery, is specially adapted to farm machinery, as the sealing of farm machinery bearing run in the sealing of combine harvester caterpillar supporting wheel bearing, some muddy water environment.This device can reduce the solid barrier of bearing, improves the working life of bearing.
Background technique
At present, due to farm machinery mainly use in the open, operation in earth, humidity or paddy field, Environmental Conditions is severe, the bearing of its rotation portion is subject to the corrosion of material friction and environment, easily cause bearing seal to lose efficacy, bearing fault takes place frequently, and reduces bearing working life.Now existing much about the device of bearing seal, be wherein mechanical structure mostly, also occurred the seal arrangement of many use magnetic fluids.Magneticfluid Seal Technique develops on the basis of magnetic fluid, and when magnetic fluid injects the gap in magnetic field, it can be full of whole gap, is formed a kind of " semi-solid O RunddichtringO ".Simple magnet fluid sealing anti-pressure ability is limited, and especially when farm machinery falls into into moorland, the extruding of mud can produce instantaneous pressure, forces mud to enter in bearing housing, brings fatal impact to the life-span of bearing.Traditional oil sealing is not enough to the extruding stopping mud, and bearing thus can be caused to lose efficacy at short notice.Although more existing correlation techniques used with magnet fluid sealing in prior art, device of the prior art is not protected for farm machinery whirligig and designs, and can not directly apply to farm machinery.Therefore, a correlation technique is not still had so far for solving the wear problem of farm machinery bearing in slurry environment.Therefore, need to improve existing Magnetofluid shaft bearing sealing device, make its sealing effect better, improve the working life of bearing further, be applicable to the sealing of farm machinery bearing better.
Summary of the invention
The object of the invention is to solve the problems of the technologies described above, a kind of rotating sealing device of farm machinery is proposed, magnetic fluid rotary seal technology is used for farm machinery by this device, combinationally use with a pressure balance chamber and magnetic fluid seal, the compressive sealed ability of magnetic fluid seal is doubled.In the working life of effective raising bearing, greatly reduce the bearing fault even eliminating farm machinery.
For this purpose, the technical solution used in the present invention is: a kind of rotating sealing device of farm machinery, be provided with the shell of the seal arrangement that shape size and bearing end cover match, the main shaft outer end of this casing outside bearing, it is characterized in that: on the main shaft that described shell covers, from inside to outside, namely outwards be provided with by bearing side and be sequentially enclosed within main shaft: O RunddichtringO, annular cavity pressure balance chamber, the interior pole shoe that ring permeability magnetic material is made, permanent magnet ring and the NULL be enclosed within inside permanent magnet ring make every magnetic baffle ring, the outer pole shoe that ring permeability magnetic material is made and end cover, at described interior pole shoe, every magnetic baffle ring, on the outerface of spindle that outer pole shoe covers, be provided with several ring teeth groove, magnetic fluid is filled with in this teeth groove, the described alignment of shafts has pressurized gas inlet hole, and this inlet hole is communicated with described pressure balance chamber.
The present invention improves further and the additional project of enforcement is:
Seal ring is respectively equipped with between the outer circumferential face and the shell inner peripheral surface of seal arrangement of described inside and outside pole shoe.
Described shell is provided with flange plate, is connected by shell by this flange plate with Bearing outer part.
The pressurized gas inlet hole of the described alignment of shafts is connected with a pressure regulator, and this pressure regulator for regulating the pressure of pressurized gas, thus regulates the pressure of pressure balance chamber.
Described end cover is provided with pressure transducer, and this pressure transducer and described pressure regulator carry out signal and control connection.This pressure transducer can promptly by the pressure conduction outside bearing to pressure regulator, and promptly adjust the pressure in pressure balance chamber.
Described main shaft pressurized gas inlet hole is used for entering of pressurized gas.The air inlet of pressure balance chamber seals by the O RunddichtringO on main shaft, is convenient to stores compression gas, balances the pressure from the external world.Pressurized gas is injected in pressure balance chamber by pressurized gas inlet hole, the gas pressure of pressure balance chamber controls to denude the suitable degree of pressure of material at the pressurized with its device for sealing magnetic fluid side in opposite directions, pressure balance chamber can make device for sealing magnetic fluid can be used in positive pressure environment, offset the positive pressure from the external world, effectively can stop the injury that pressurized abrasion object causes bearing.End cover arranges pressure transducer and promptly can conduct pressure outside bearing, and promptly adjust the pressure of pressure balance chamber.It is to be noted, pressure in pressure balance chamber, can according to actual working environment, can bear within the scope of maximum pressure from zero to it and regulate, pressure balance chamber and device for sealing magnetic fluid use simultaneously, build gas, liquid, abrasive particle thing etc. in an external environment condition and enter the obstacle of seal arrangement, thus effectively prevent bearing wear, improve the working life of bearing.
During installation, seal arrangement of the present invention is placed in the side that bearing is adjacent with the external world, is connected through other parts of bolt and Bearing outer by flange plate, not only play magnet fluid sealing effect but also can be used as bearing (ball) cover use, improve assembling interchangeability.
Advantage of the present invention: rotating sealing device of the present invention is on traditional magnet fluid sealing basis, Magneticfluid Seal Technique combines with pressure balance chamber by the feature according to farm machinery, devise pressure balance chamber, play the effect of two aspects: first, bearing is sealed, plays seal action; The second, when preventing farm machinery from falling into into moorland, the extruding of mud can produce instantaneous pressure forces mud to enter in bearing housing, brings fatal impact to the life-span of bearing.Stop pressurized abrasion thing to enter in bearing unit, prevent abnormal bearing wear, can work under pressurized denudes substance environment, effectively improve the working life of bearing.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the overall structure schematic diagram of the present invention together with bearing assemble.
Profile of the present invention is not by the restriction of this figure, and only the change of profile also belongs among the protection domain of this patent.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the present invention will be described: embodiment: see accompanying drawing, a kind of rotating sealing device of farm machinery, be provided with the shell 7 of the seal arrangement that shape size and bearing end cover match, the main shaft outer end of this casing outside bearing 13, on the main shaft 12 that described shell covers, from inside to outside, namely outwards be provided with by bearing side and be sequentially enclosed within main shaft: O RunddichtringO 10, annular cavity pressure balance chamber 9, the interior pole shoe 41 that ring permeability magnetic material is made, permanent magnet ring 5 and the NULL be enclosed within inside permanent magnet ring make every magnetic baffle ring 8, the outer pole shoe 4 that ring permeability magnetic material is made and end cover 3, at described interior pole shoe, every magnetic baffle ring, on the outerface of spindle that outer pole shoe covers, be provided with several ring teeth groove 1, magnetic fluid 2 is filled with in this teeth groove, the described alignment of shafts has pressurized gas inlet hole 11, and this inlet hole is communicated with described pressure balance chamber.Seal ring 6,61 is respectively equipped with between the outer circumferential face and the shell inner peripheral surface of seal arrangement of described inside and outside pole shoe.Described shell is provided with flange plate, is connected by shell by this flange plate 71 with Bearing outer part 14.The pressurized gas inlet hole of the described alignment of shafts is connected with a pressure regulator, and this pressure regulator is the pressure regulating pressurized gas, thus regulates the pressure regulator of pressure balance cavity pressure.Described end cover is provided with pressure transducer, and this pressure transducer and described pressure regulator carry out signal and control connection.
Test experience to the present embodiment: existing experimental setup two groups, uses plain bearing seal arrangement for one group, one group of rotating sealing device by the embodiment of the present invention.Two groups of devices are linked together with the sealing wet part producing fluid pressure respectively, sets certain hydraulic pressure outside bearing, apply power and main shaft is rotated, continuous operation 8 hours, measures the variation in water pressure of two groups of Bearing outer, and test result is:
Reduce 2MPa with the hydraulic pressure of plain bearing seal arrangement, reduce 0.3MPa with the hydraulic pressure of rotating sealing device.So the sealability of the rotating sealing device of this inventive embodiments is obviously better than plain bearing seal arrangement.
It should be pointed out that when not changing basic structure of the present invention, can also make some similar changes, these changes also should within the protection domain of this patent.
Claims (5)
1. the rotating sealing device of a farm machinery, be provided with the shell (7) of the seal arrangement that shape size and bearing end cover match, this casing is in the main shaft outer end in bearing (13) outside, it is characterized in that: on the main shaft (12) that described shell covers, from inside to outside, namely outwards be provided with by bearing side and be sequentially enclosed within main shaft: O RunddichtringO (10), annular cavity pressure balance chamber (9), the interior pole shoe (41) that ring permeability magnetic material is made, permanent magnet ring (5) and the NULL be enclosed within inside permanent magnet ring make every magnetic baffle ring (8), the outer pole shoe (4) that ring permeability magnetic material is made and end cover (3), at described interior pole shoe, every magnetic baffle ring, on the outerface of spindle that outer pole shoe covers, be provided with several ring teeth groove (1), magnetic fluid (2) is filled with in this teeth groove, the described alignment of shafts has pressurized gas inlet hole (11), and this inlet hole is communicated with described pressure balance chamber.
2. rotating sealing device according to claim 1, is characterized in that: between the outer circumferential face and the shell inner peripheral surface of seal arrangement of described inside and outside pole shoe, be respectively equipped with seal ring (6,61).
3. rotating sealing device according to claim 1, is characterized in that: described shell is provided with flange plate, is connected by shell by this flange plate (71) with Bearing outer part (14).
4. rotating sealing device according to claim 1, it is characterized in that: the pressurized gas inlet hole of the described alignment of shafts is connected with a pressure regulator, this pressure regulator is the pressure regulating pressurized gas, thus regulates the pressure regulator of pressure balance cavity pressure.
5. rotating sealing device according to claim 1, is characterized in that: on described end cover, be provided with pressure transducer, and this pressure transducer and described pressure regulator carry out signal and control connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310603314.6A CN103591148B (en) | 2013-08-16 | 2013-11-26 | A kind of rotating sealing device of farm machinery |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310363396 | 2013-08-16 | ||
| CN201310363396.1 | 2013-08-16 | ||
| CN2013103633961 | 2013-08-16 | ||
| CN201310603314.6A CN103591148B (en) | 2013-08-16 | 2013-11-26 | A kind of rotating sealing device of farm machinery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103591148A CN103591148A (en) | 2014-02-19 |
| CN103591148B true CN103591148B (en) | 2016-02-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310603314.6A Active CN103591148B (en) | 2013-08-16 | 2013-11-26 | A kind of rotating sealing device of farm machinery |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106195026B (en) * | 2016-09-09 | 2018-03-27 | 广西科技大学 | A kind of bearing cap device for sealing magnetic fluid |
| CN106972398A (en) * | 2017-04-18 | 2017-07-21 | 嘉兴市恒创电力设备有限公司 | A kind of environmentally friendly ring main unit magnet fluid sealing reel |
| CN108616187A (en) * | 2018-07-13 | 2018-10-02 | 苏州启承动能科技有限公司 | A kind of vacuum water cooling high speed motor |
| DE102018131226A1 (en) * | 2018-12-06 | 2020-06-10 | Liebherr-Werk Nenzing Gmbh | Special civil engineering machine, especially trench cutter |
| CN112648380A (en) * | 2020-12-30 | 2021-04-13 | 清华大学 | Magnetic liquid sealing device |
| CN114810674B (en) * | 2022-06-30 | 2022-11-29 | 四川绵竹川润化工有限公司 | Sealed liquid ammonia pump for liquid ammonia transportation |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60172777A (en) * | 1984-02-17 | 1985-09-06 | Nippon Fueroo Furuideikusu Kk | Seal device for rotary shaft, utilizing magnetic fluid |
| JPS62177367A (en) * | 1986-01-30 | 1987-08-04 | Tech Res Assoc Highly Reliab Marine Propul Plant | Magnetic fluid shaft seal device for liquid |
| CN2391058Y (en) * | 1999-06-04 | 2000-08-09 | 北京航空航天大学 | Combined sealing device |
| CN2479295Y (en) * | 2001-03-28 | 2002-02-27 | 王瑞金 | Magnetic fluid sealing device |
| CN101377985A (en) * | 2007-08-31 | 2009-03-04 | 株洲维格磁流体有限公司 | Dynamic sealing device for medium-high voltage power switchgear |
| CN203585116U (en) * | 2013-08-16 | 2014-05-07 | 天才诺尔顿精密机械(北京)有限公司 | Rotating sealing device for farm machinery |
-
2013
- 2013-11-26 CN CN201310603314.6A patent/CN103591148B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60172777A (en) * | 1984-02-17 | 1985-09-06 | Nippon Fueroo Furuideikusu Kk | Seal device for rotary shaft, utilizing magnetic fluid |
| JPS62177367A (en) * | 1986-01-30 | 1987-08-04 | Tech Res Assoc Highly Reliab Marine Propul Plant | Magnetic fluid shaft seal device for liquid |
| CN2391058Y (en) * | 1999-06-04 | 2000-08-09 | 北京航空航天大学 | Combined sealing device |
| CN2479295Y (en) * | 2001-03-28 | 2002-02-27 | 王瑞金 | Magnetic fluid sealing device |
| CN101377985A (en) * | 2007-08-31 | 2009-03-04 | 株洲维格磁流体有限公司 | Dynamic sealing device for medium-high voltage power switchgear |
| CN203585116U (en) * | 2013-08-16 | 2014-05-07 | 天才诺尔顿精密机械(北京)有限公司 | Rotating sealing device for farm machinery |
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| CN103591148A (en) | 2014-02-19 |
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