CN110067859B - Stable floating type rotary shaft sealing structure - Google Patents
Stable floating type rotary shaft sealing structure Download PDFInfo
- Publication number
- CN110067859B CN110067859B CN201910277633.XA CN201910277633A CN110067859B CN 110067859 B CN110067859 B CN 110067859B CN 201910277633 A CN201910277633 A CN 201910277633A CN 110067859 B CN110067859 B CN 110067859B
- Authority
- CN
- China
- Prior art keywords
- output flange
- floating
- oil
- cover
- groove
- 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.)
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Links
- 238000007789 sealing Methods 0.000 title claims abstract description 26
- 238000013016 damping Methods 0.000 claims abstract description 18
- 239000003921 oil Substances 0.000 claims description 52
- 239000010687 lubricating oil Substances 0.000 claims description 10
- 230000000694 effects Effects 0.000 abstract description 11
- 230000035939 shock Effects 0.000 description 8
- 238000010521 absorption reaction Methods 0.000 description 7
- 238000001125 extrusion Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The invention relates to a sealing device, in particular to a stable floating type rotating shaft sealing structure. The utility model provides a stable floating rotary shaft seal structure, including output flange, be provided with the oil blanket seat on the output flange, be provided with the oil blanket between oil blanket seat and the output flange, be provided with the cover that floats between oil blanket and the output flange, through connecting pin connection between cover and the output flange, the last corresponding cover that floats of output flange is provided with the ring channel, be provided with the elastic ring in the ring channel, be provided with a plurality of damper grooves along the circumferencial direction on the elastic ring, be provided with the supporting shoe in the damper groove, be connected through damping spring between the bottom surface of supporting shoe and damper groove, one side that is close to the cover that floats on the supporting shoe is provided with the recess, be provided with the ball in the recess, one side that is close to the cover that floats on the damper groove is provided with the dog that is used for preventing that the ball breaks away from the recess. The invention can effectively offset the deflection runout of the shaft so as to achieve an effective sealing effect.
Description
Technical Field
The invention relates to a sealing device, in particular to a stable floating type rotating shaft sealing structure.
Background
The rotary shaft sealing mode used at present is mainly a traditional pure oil sealing type structure. These traditional seal structures are affected by manufacturing and mounting errors of parts (box body, end cover, shaft, oil seal seat, etc.), especially the concentricity of a cavity hole for mounting an oil seal, the box body, the end cover and an output shaft, the deviation of each part is accumulated on an assembled flange (oil seal lip matching surface), the deflection runout of a flange shaft is easy to cause in the assembly, the oil seal eccentrically runs, the deflection runout of the flange shaft causes the overlarge out of coaxiality of the shaft diameter and the shaft line of a seal part of the flange shaft to cause uneven radial pressure distribution of a framework oil seal lip, the spatial plane position formed by the lip is damaged by the deflection runout of the flange to cause abrupt change of the thickness of an oil film, and the sealing condition is damaged to cause leakage of the output shaft; meanwhile, due to different structural thermal expansion coefficients of the cavity, the output shaft and the oil seal, the oil seal can be overlaid and twisted under the working conditions, so that the seal is not tight and oil seeps.
For example, chinese patent publication No.: CN204358106U, 27 days 5, 2015. When the device shaft rotates, the oil seal, the floating sleeve and the O-shaped ring are combined together to form a floating sealing structure, the floating sleeve is added on the joint surface of the output flange oil seal, and the floating sleeve is in floating sealing with the shaft through the O-shaped ring, so that the oil seal and the shaft can float, the lip of the oil seal is always kept in a good fit state with the shaft surface, and the deflection runout of the shaft is counteracted to achieve a sealing effect. Although the device is low in cost, in practical application, the deflection runout of the shaft cannot be effectively counteracted by the elasticity of the O-shaped ring, so that an effective sealing effect is achieved.
Disclosure of Invention
The invention mainly aims at the problems and provides a stable floating type rotating shaft sealing structure which can effectively counteract the deflection runout of a shaft so as to achieve an effective sealing effect.
The aim of the invention is mainly achieved by the following scheme: the utility model provides a stable form floating rotary shaft seal structure, includes the output flange, the output flange on be provided with the oil blanket seat, oil blanket seat and output flange between be provided with the oil blanket, oil blanket and output flange between be provided with floating cover, floating cover on be provided with first round pin groove, output flange on be provided with the second round pin groove, floating cover and output flange between be connected through the connecting pin that is located first round pin groove and second round pin inslot, output flange on correspond the floating cover and be provided with the ring channel, the ring channel in be provided with the elastic ring, the elastic ring on be provided with a plurality of damper grooves along the circumferencial direction, the damper groove sets up on one side that the elastic ring is close to the floating cover, the damper groove in be provided with the supporting shoe, supporting shoe and damper groove's bottom surface between be connected through damping spring, one side that is close to the floating cover on the supporting shoe be provided with the recess, the damper groove on be provided with the ball on one side that is close to the floating cover be used for preventing to break away from the recess, one side that the ball is located in the recess, the ball is on the sleeve. The output flange is provided with the oil blanket seat, be provided with the oil blanket between oil blanket seat and the output flange, be provided with the floating collar between oil blanket and the output flange, be provided with first keyway on the floating collar, be provided with on the output flange with first keyway for the second keyway, be connected through the connecting pin that is located first keyway and second keyway between floating collar and the output flange, the floating collar passes through connecting pin and the fixed rotation of axle with the output flange, the corresponding floating collar is provided with the ring channel on the output flange, be provided with the elastic ring in the ring channel, elastic and oil blanket elasticity make the floating collar float and form an holistic follow-up structure, can offset the beat of partial axle, be provided with a plurality of damper grooves along the circumferencial direction on the elastic ring, the damper groove sets up on one side that the elastic ring is close to the floating collar, be provided with the supporting shoe in the damper groove, be sliding connection between supporting shoe and the damper groove inner wall, be provided with the clearance between the bottom surface of supporting shoe and damper groove, be provided with the recess on one side that is close to the floating collar on the supporting shoe, be provided with the ball on the recess, be close to one side of floating collar on the groove and be provided with the damping spring and be used for the ball and roll the bearing sleeve is arranged in the bearing sleeve to the bearing sleeve, the effect of rolling bearing sleeve can be offset the roll and the roll ball can be reduced in the bearing sleeve is out of the bearing sleeve, and the bearing sleeve can be used for the roll and the roll to the roll and roll to the vibration reduction effect can be set up and the roll and roll to the roll and roll.
Preferably, lubricating oil is arranged in the damping groove. The damping groove is internally provided with lubricating oil, the lubricating oil can be semi-solid, and when the ball bearing stress drives the supporting block to move towards the damping spring, the lubricating oil can be extruded to overflow from the opening of the damping groove, so that the friction loss of extrusion collision between the elastic ring and the floating sleeve is reduced.
Preferably, a windage tray is arranged between the oil seal seat and the output flange, and the windage tray is arranged on one side of the oil seal and the floating sleeve in the axial direction. An oil baffle disc is arranged between the oil seal seat and the output flange and is arranged on one axial side of the oil seal and the floating sleeve, and the oil baffle disc can play an effective isolating role and improve the sealing effect on lubricating oil.
Preferably, the elastic ring is an O-shaped rubber sealing ring. The elastic ring is an O-shaped rubber sealing ring, so that the cost is low, the abrasion resistance is realized, and the service life is long.
Therefore, the stable floating type rotary shaft sealing structure has the following advantages: the invention has simple structure, the arrangement of the elastic ring and the damping spring can effectively counteract the deflection runout of the shaft, thereby achieving good sealing effect, and the arrangement of the ball can reduce the collision friction loss between the elastic ring and the floating sleeve and prolong the service life.
Drawings
Fig. 1 is a schematic diagram of a conventional rotary shaft oil seal structure.
Fig. 2 is a schematic structural view of the present invention.
Fig. 3 is an enlarged view at a in fig. 2.
Fig. 4 is an enlarged view at B in fig. 3.
Fig. 5 is a schematic view of the structure of the floating cover in the present invention.
Fig. 6 is a schematic view of the structure of the output flange in the present invention.
Illustration of: 1-oil seal seat, 2-oil seal, 3-oil baffle disc, 4-output flange, 5-floating sleeve, 6-connecting pin, 7-elastic ring, 8-supporting block, 9-damping groove, 10-damping spring, 11-ball, 12-annular groove, 13-groove, 14-stop block, 15-first pin groove, 16-second pin groove.
Detailed Description
The technical scheme of the invention is further specifically described below through examples and with reference to the accompanying drawings.
Example 1:
As shown in fig. 1,2, 3, 4,5, 6, a stable floating rotary shaft sealing structure comprises an output flange 4, an oil seal seat 1 is arranged on the output flange 4, an oil seal 2 is arranged between the oil seal seat 1 and the output flange 4, a floating sleeve 5 is arranged between the oil seal 2 and the output flange 4, a first pin groove 15 is arranged on the floating sleeve 5, a second pin groove 16 opposite to the first pin groove 15 is arranged on the output flange 4, the floating sleeve 5 is connected with the output flange 4 through a connecting pin 6 positioned in the first pin groove 15 and the second pin groove 16, the floating sleeve 5 and the output flange 4 are fixedly rotated with a shaft through the connecting pin 6, an oil baffle disc 3 is arranged between the oil seal seat 1 and the output flange 4, the oil baffle disc 3 is arranged on one axial side of the oil seal and the floating sleeve 5, the oil baffle disc 3 can play an effective isolating role, and the sealing effect on lubricating oil is improved, the output flange 4 is provided with an annular groove 12 corresponding to the floating sleeve 5, an elastic ring 7 is arranged in the annular groove 12, when the shaft rotates, the elastic ring 7 and the oil seal elastic enable the floating sleeve 5 to float to form an integral follow-up structure, so that deflection and runout of part of the shaft can be counteracted, the elastic ring 7 is an O-shaped rubber sealing ring, the cost is low, the wear resistance is realized, the service life is long, a plurality of shock absorption grooves 9 are arranged on the elastic ring 7 along the circumferential direction, the shock absorption grooves 9 are arranged on one side of the elastic ring 7 close to the floating sleeve 5, a supporting block 8 is arranged in the shock absorption grooves 9, sliding connection is arranged between the supporting block 8 and the inner wall of the shock absorption groove 9, a gap is reserved between the supporting block 8 and the inner wall of the shock absorption groove 9, the bottom surface of the supporting block 8 and the shock absorption groove 9 is connected through a shock absorption spring 10, one side of the supporting block 8 close to the floating sleeve 5 is provided with a groove 13, the ball 11 is arranged in the groove 13, the shock attenuation groove 9 is last to be close to one side of floating cover 5 to be provided with and to be used for preventing that ball 11 breaks away from dog 14 of recess 13, dog 14 can prevent that ball 11 from breaking away from in recess 13, one side of ball 11 is located recess 13, the opposite side of ball 11 supports on floating cover 5, ball 11 supports on floating cover 5 under the effect of damping spring 10 and supporting shoe 8, the setting of ball 11 can reduce the friction loss between elastic ring 7 and the floating cover 5, oil blanket 2, floating cover 5, elastic ring 7, damping spring 10 make up into a floating seal structure together, damping spring 10's setting can absorb the vibration energy that produces when the axle beat beats, thereby offset the beat of axle effectively and reach effectual sealed effect, high stability, and long service life.
The damping groove 9 is internally provided with lubricating oil, the lubricating oil can be semi-solid, and when the ball 11 is stressed to drive the supporting block 8 to move towards the damping spring 10, the lubricating oil can be extruded to overflow from the opening of the damping groove 9, so that the friction loss of extrusion collision between the elastic ring 7 and the floating sleeve 5 is reduced.
It should be understood that this example is only illustrative of the application and is not intended to limit the scope of the application. Furthermore, it should be understood that various changes and modifications can be made by one skilled in the art after reading the teachings of the present application, and such equivalents are intended to fall within the scope of the application as defined in the appended claims.
Claims (2)
1. The utility model provides a stable floating rotary shaft seal structure, its characterized in that includes the output flange, the output flange on be provided with the oil blanket seat, oil blanket seat and output flange between be provided with the oil blanket, oil blanket and output flange between be provided with the floating cover, the floating cover on be provided with first keyway, output flange on be provided with the second keyway, floating cover and output flange between connect through the connecting pin that is arranged in first keyway and second keyway, output flange on correspond the floating cover and be provided with the ring channel, the ring channel in be provided with the elastic ring, the elastic ring on be provided with a plurality of damper grooves along the circumferencial direction, damper groove sets up on one side that the elastic ring is close to the floating cover, damper groove in be provided with the supporting shoe, supporting shoe and damper groove's bottom surface between pass through damping spring and connect, the supporting shoe on one side that is close to the floating cover be provided with the recess, damper groove on one side that is close to the floating cover be provided with the ball, damper groove on be provided with the dog that is used for preventing to break away from the ball in the recess, the ball on the other side that is located on the ball of the sleeve; lubricating oil is arranged in the damping groove; an oil baffle disc is arranged between the oil seal seat and the output flange, and the oil baffle disc is arranged on one axial side of the oil seal and the floating sleeve.
2. The stable floating rotary shaft sealing structure according to claim 1, wherein the elastic ring is an O-shaped rubber sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910277633.XA CN110067859B (en) | 2019-04-08 | 2019-04-08 | Stable floating type rotary shaft sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910277633.XA CN110067859B (en) | 2019-04-08 | 2019-04-08 | Stable floating type rotary shaft sealing structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110067859A CN110067859A (en) | 2019-07-30 |
| CN110067859B true CN110067859B (en) | 2024-04-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910277633.XA Active CN110067859B (en) | 2019-04-08 | 2019-04-08 | Stable floating type rotary shaft sealing structure |
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| Country | Link |
|---|---|
| CN (1) | CN110067859B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115568905A (en) * | 2022-10-17 | 2023-01-06 | 深圳迈菲超声医疗器械有限公司 | Ultrasonic cutting device |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1488051A (en) * | 2001-01-25 | 2004-04-07 | ס�ѽ�����ҵ��ʽ���� | Threaded joint for steel pipe with excellent seizure and corrosion resistances |
| CN101743417A (en) * | 2007-07-16 | 2010-06-16 | 特纳瑞斯连接股份公司 | Threaded joint with resilient seal ring |
| CN102027186A (en) * | 2008-02-29 | 2011-04-20 | 特纳瑞斯连接有限责任公司 | Threaded joint with improved resilient seal ring |
| EP2826932A2 (en) * | 2013-07-12 | 2015-01-21 | Siegthalerfabrik GmbH | Flange for connecting two structural components, in particular a tower of a wind power plant |
| CN204358106U (en) * | 2014-12-08 | 2015-05-27 | 江麓机电集团有限公司 | Floating type sealing device for rotary shaft |
| CN204532795U (en) * | 2015-01-26 | 2015-08-05 | 宝鸡石油机械有限责任公司 | The floating type intermediate draw bar sealing configuration of a kind of drilling pump |
| CN205315704U (en) * | 2015-12-21 | 2016-06-15 | 北京天地华泰矿业管理股份有限公司 | Coal -winning machine planetary mechanism floating oil seal structure |
| CN209892744U (en) * | 2019-04-08 | 2020-01-03 | 浙江万里扬新能源驱动科技有限公司 | Stable floating type rotary shaft sealing structure |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6550822B2 (en) * | 2001-04-25 | 2003-04-22 | G. B. Tubulars, Inc. | Threaded coupling with water exclusion seal system |
-
2019
- 2019-04-08 CN CN201910277633.XA patent/CN110067859B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1488051A (en) * | 2001-01-25 | 2004-04-07 | ס�ѽ�����ҵ��ʽ���� | Threaded joint for steel pipe with excellent seizure and corrosion resistances |
| CN101743417A (en) * | 2007-07-16 | 2010-06-16 | 特纳瑞斯连接股份公司 | Threaded joint with resilient seal ring |
| CN102027186A (en) * | 2008-02-29 | 2011-04-20 | 特纳瑞斯连接有限责任公司 | Threaded joint with improved resilient seal ring |
| EP2826932A2 (en) * | 2013-07-12 | 2015-01-21 | Siegthalerfabrik GmbH | Flange for connecting two structural components, in particular a tower of a wind power plant |
| CN204358106U (en) * | 2014-12-08 | 2015-05-27 | 江麓机电集团有限公司 | Floating type sealing device for rotary shaft |
| CN204532795U (en) * | 2015-01-26 | 2015-08-05 | 宝鸡石油机械有限责任公司 | The floating type intermediate draw bar sealing configuration of a kind of drilling pump |
| CN205315704U (en) * | 2015-12-21 | 2016-06-15 | 北京天地华泰矿业管理股份有限公司 | Coal -winning machine planetary mechanism floating oil seal structure |
| CN209892744U (en) * | 2019-04-08 | 2020-01-03 | 浙江万里扬新能源驱动科技有限公司 | Stable floating type rotary shaft sealing structure |
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| Publication number | Publication date |
|---|---|
| CN110067859A (en) | 2019-07-30 |
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