CN108071803A - End face rotary dynamic sealing structure - Google Patents
End face rotary dynamic sealing structure Download PDFInfo
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- CN108071803A CN108071803A CN201611007239.7A CN201611007239A CN108071803A CN 108071803 A CN108071803 A CN 108071803A CN 201611007239 A CN201611007239 A CN 201611007239A CN 108071803 A CN108071803 A CN 108071803A
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- Prior art keywords
- stress side
- face
- seal
- ring seal
- sealing structure
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Classifications
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- 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
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing Devices (AREA)
Abstract
The invention belongs to rotatory sealing technical field, specifically a kind of end face rotary dynamic sealing structure.A kind of end face rotary dynamic sealing structure, including rotating disk, stationary disk and rotary support, the rotating disk is connected with the end face of stationary disk by rotary support, and the end face of rotating disk and stationary disk is equipped with minor groove, is sealed between rotating disk and stationary disk and rotary support by O-ring seal.Circumferentially it is equipped with to house the seal groove of O-ring seal on the end face of the rotating disk and stationary disk, the seal groove includes notch, stress side, bottom surface and non-stress side, wherein notch is shunk inwardly, the stress side and non-stress side are located at the both sides of notch center line respectively, and deformation Free up Memory is equipped between non-stress side and the O-ring seal outer round surface being placed in the slot.Sealing effect of the present invention is good, simple in structure, securely and reliably.
Description
Technical field
The invention belongs to rotatory sealing technical field, specifically a kind of end face rotary dynamic sealing structure.
Background technology
The reliability of various encapsulating methods is all guarantee system standard in hydraulic drive and the pneumatic transmission system of compression
The important guarantee of true stable operation, otherwise system will be unable to work normally.Therefore, sealing effect can be referred to as the most important thing.
At present, end face rotatory sealing is utilized in two minor grooves 3 of processing on rotating disk 1 and stationary disk 2, then small two
The method of injection lubricating grease is sealed in groove 3, as shown in Figure 1.It is vertically transported in water using the equipment of the encapsulating method
Up to 1 meter at dynamic most deep water, and the course of work will also be rotated and (be less than 40r/min).H is revolution branch respectively at two in figure
Support the gap between upper/lower terminal face and rotating disk 1 and stationary disk 2, h=0.4~0.5mm.Water will necessarily enter revolving support
Inside, and the lubricating grease in minor groove 3 is rinsed out, so directly affect the normal work of equipment.But the current problem is from reason
By to reality except using " mechanical seal " method in addition to, really again without other feasible solutions.It can be apparent by the device structure
Find out：Space is too small between dynamic and static part, the space of only 0.4~0.5mm height.Because mechanical sealing mechanism volume is too big,
It is basic inapplicable herein.
The content of the invention
In view of the above-mentioned problems, it is an object of the invention to provide a kind of end face rotary dynamic sealing structures.The sealing structure is kept away
Exempt from equipment to cause to cause to deform due to generation movement after O-ring seal is pressurized at work, so as to avoid the O caused by deformation
Type sealing ring is damaged.
To achieve these goals, the present invention uses following technical scheme：
A kind of end face rotary dynamic sealing structure, including rotating disk, stationary disk and rotary support, the rotating disk and static
The end face of disk is connected by rotary support, and the end face of the rotating disk and stationary disk is equipped with minor groove, the rotating disk and
It is sealed between stationary disk and rotary support by O-ring seal.
Circumferentially it is equipped with to house the seal groove of O-ring seal on the end face of the rotating disk and stationary disk, it is described
Seal groove includes notch, stress side, bottom surface and non-stress side, and wherein notch is shunk inwardly, the stress side and non-stress side
It is located at the both sides of notch center line respectively, is set between the non-stress side and the O-ring seal outer round surface being placed in the slot
There is deformation Free up Memory.
Plane is in the bottom surface and is located at the homonymy of notch center line with non-stress side.
The stress side and non-stress side are arc surface.
The arc surface diameter of the stress side is identical with the line footpath of O-ring seal.
Stress side guide surface is respectively equipped between the notch and the stress side and non-stress side and non-stress side is oriented to
Face, stress side guide surface and non-stress side guide surface are inclined-plane.
Stress side guide surface and the angle α of non-stress side guide surface and horizontal plane for 60 ° and with the notch circular arc
Transition.
The big 10-15mm of internal diameter of O-ring seal described in the internal diameter ratio of the rotating disk seal groove and stationary disk seal groove.
The O-ring seal is rubber seal, and Shao Er hardness is HS50~70.
Be placed in the decrement of the rotating disk seal groove and the O-ring seal in stationary disk seal groove for 0.05~
0.12mm。
Advantages of the present invention and advantageous effect are：
1. the present invention applies O-shaped rubber seal in the structure of end face rotary dynamic seal, sealing effect is good, structure
Simply, securely and reliably.
2. notch design is to contract by the present invention, while guaranteeing to be pressed into O-ring seal, it can stop O-shaped sealing
Circle comes off；By notch arc transition, with anti-sticking broken O-ring seal.
3. the present invention designs guide surface at the notch of seal groove, facilitate the importing of O-ring seal, while avoid O-shaped close
Seal is scratched by notch.
4. the stress surface of the present invention is designed as arc surface, and its radius is equal with the radius of O-ring seal cross section, as far as possible
Increase contact area of the O-ring seal in inside diameter surface and rooved face, generated relatively with rooved face to prevent O-ring seal during work
Movement, avoids O-ring seal from destroying.
5. the present invention in non-stress side design variations Free up Memory, can be such that slot inner cavity is generated with O-ring seal outer round surface
One space discharges deflection to this space after being pressurized when working for O-ring seal.
Description of the drawings
Fig. 1 is the structure diagram of end face rotatory sealing in existing equipment；
Fig. 2 is the structure diagram of the present invention；
Fig. 3 is A-A sectional views in Fig. 2；
Fig. 4 is the mated condition schematic diagram of O-ring seal and seal groove in the present invention.
In figure：1 is rotating disk, and 2 be stationary disk, and 3 be minor groove, and 4 be rotating disk seal groove, and 41 be notch, and 42 be stress
Side guide surface, 43 be stress side, and 44 be bottom surface, and 45 be deformation Free up Memory, and 46 be non-stress side, and 47 are oriented to for non-stress side
Face, 5 be rotating disk O-ring seal, and 6 be stationary disk O-ring seal, and 7 be stationary disk seal groove, and 8 be rotary support, and α is slot
The angle of mouth both sides guide surface and horizontal plane, h are the revolving support upper/lower terminal face seam between rotating disk and stationary disk respectively
Gap, H are the height that O-ring seal exposes to notch.
Specific embodiment
It is right in the following with reference to the drawings and specific embodiments in order to make the object, technical solutions and advantages of the present invention clearer
The present invention is described in detail.
As shown in Fig. 2, a kind of end face rotary dynamic sealing structure provided by the invention, including rotating disk 1, stationary disk 2 and is returned
Turn supporter 8, the end face of the rotating disk 1 and stationary disk 2 is connected by rotary support 8, the rotating disk 1 and stationary disk 2
End face be equipped with minor groove 3, sealed between the rotating disk 1 and stationary disk 2 and rotary support 8 by O-ring seal.
Circumferentially it is equipped with to house the seal groove of O-ring seal on the end face of the rotating disk 1 and stationary disk 2, i.e.,
The end face of rotating disk 1 is equipped with rotating disk seal groove 4, and the end face of stationary disk 2 is equipped with stationary disk seal groove 7, the rotating disk
Rotating disk O-ring seal 5 is equipped in seal groove 4, stationary disk O-ring seal 6, institute are equipped in the stationary disk seal groove 7
It is identical with 7 structure of stationary disk seal groove to state rotating disk seal groove 4.
As shown in Figure 3-4, the seal groove includes notch 41, stress side 43, bottom surface 44 and non-stress side 46, wherein notch
41 shrink inwardly, while ensureing that O-ring seal can be pressed in elastic range in people's seal groove, moreover it is possible to prevent O-shaped close
Seal comes off.The stress side 43 is located at the one side of 41 center line of notch, and the stress side 43 supports O-shaped sealing for holding tightly
Circle.The non-stress side 46 is located at the opposite side of 41 center line of notch, the non-stress side 46 and the O being placed in the seal groove
Between type seal ring with outer surface generate a space, the space for deformation Free up Memory 45, when working for O-ring seal by
After pressure, deflection is discharged to this space.The bottom surface for plane and is located at the another of 41 center line of notch with non-stress side 46
Side, to increase the volume of deformation Free up Memory 45.
The stress side 43 and non-stress side 46 are arc surface, arc surface diameter and the O-shaped sealing of the stress side 43
The line footpath of circle is identical, as far as possible increase O-ring seal inside diameter surface with sealing rooved face contact area, to prevent work when, it is O-shaped
Sealing ring generates relative motion with sealing rooved face, avoids O-ring seal damaged.
Further, stress side guide surface is respectively equipped between the notch 41 and the stress side 43 and non-stress side 46
42 and non-stress side guide surface 47, stress side guide surface 42 and non-stress side guide surface 47 are inclined-plane, it is ensured that O-shaped sealing
Circle is not collided with 41 edge of notch, avoids scratching O-ring seal.
In one embodiment of the invention, stress side guide surface 42 and non-stress side guide surface 47 are justified with the notch 41
Arc transition, to prevent 41 edge of notch from breaking O-ring seal card.Stress side guide surface 42 and non-stress side guide surface 47 with
The angle α of horizontal plane is 60 °, which is to block the more satisfactory angle of O-ring seal.Table in the excessive seal groove of angle
Face and the point of contact of O-ring seal move up, to stopping that the function that O-ring seal comes off is unfavorable.If angle too small seal groove
The point of contact of inner surface and O-ring seal moves down, and is touched with 41 side edge of notch, easily the broken O-ring seal of card.The stress
It is only 0.4mm long that 42 very little of side guide surface, i.e. figure cathetus section are very short, it is mainly used for using as benchmark during Vehicle Processing, otherwise
Turner master worker does not know to process since which.Its processing sequence is：First by angle α=60 °, vehicle goes out inclined-plane, then vehicle goes out stress respectively
41 arc transition of side 43 and notch.Last only 42 a length of 0.4mm of remaining stress side guide surface.
The big 10- of internal diameter of O-ring seal described in the internal diameter ratio of the rotating disk seal groove 4 and stationary disk seal groove 7
15mm, with stretching O-ring seal.
The O-ring seal is rubber seal, and Shao Er hardness is HS50~70, and preferred HS50~60 are described O-shaped close
After seal is mounted in the rotating disk seal groove 4 and stationary disk seal groove 7, decrement is 0.05~0.12mm.
Since the decrement that O-ring seal is required after installation should ensure that in the range of 0.05~0.12mm, the value is smaller, essence
Degree is higher.Specific implementation method can select any one in following two methods with step：
First method：After correlated parts are processed and assembled, accurately survey each relative dimensions (i.e. sealing ring groove depth size,
The actual value of gap h between revolving support upper/lower terminal face and rotating disk 1 and stationary disk 2).Pressing more than decrement again is
The requirement of 0.05~0.12mm manufactures O-ring seal (mold is had made to order).
Second method：First according to national standard selection tolerance O-ring seal bigger than normal, national standard is φ 7 ± 0.15.
Then rotating disk 1 and stationary disk 2 are processed, but does not process the seal groove where O-ring seal.Other positions all process, and go forward side by side
Luggage is matched somebody with somebody.Then survey revolving support upper/lower terminal face respectively between rotating disk 1 and stationary disk 2 two at gap value h, this
Along with the H values in the as figure of decrement 0.05~0.12 of O-ring seal, (O-ring seal exposes to the height of notch to gap value h
Degree).The actual value of the sectional dimension of O-ring seal is surveyed again, H values are subtracted with the actual value, where calculating O-ring seal
The groove depth of seal groove.Then seal groove can be processed by this depth value, the seal groove depth after being processed by this value can be protected naturally
Demonstrate,prove 0.05~0.12mm of decrement of O-ring seal.It if is processed by such method, it is necessary to ensure that looking in secondary clamping workpiece
Positive precision, end is jumped and footpath jumps and is respectively less than 0.05.
If the gap between revolving support upper/lower terminal face and rotating disk 1 and stationary disk 2 is less than 0.4, had better not vehicle
Bed processing.It is recommended that with surface grinding machine reconditioning.But it must assure that the depth of parallelism of tablet upper and lower surface is less than 0.05 in advance.I.e. in advance
Should on the basis of plane machining flat surface grinding another plane.
The O-shaped rubber seal for selecting line footpath larger as far as possible, to enhance its non-deformability.One embodiment of the invention
In, the line footpath of the O-shaped rubber seal of use is Φ 7, and meets national standard, and the internal diameter of O-shaped rubber seal is 437mm.
The internal diameter of seal groove is 450mm, and the circular arc radius surface of seal groove stress side 43 is 3.5mm, and the width of notch 41 is 5.5mm, slot
The radius of the circular arc chamfering of mouth 41 is 0.5mm.
It is moved vertically in water using the equipment of sealing structure of the present invention, and the course of work will also be rotated and (is less than
40r/min).Because of pressure only 0.01MPa at one meter of the depth of water, this value very little；The tangential force of periphery that equipment generates when rotated is to this
Sealing is without influence；During equipment rotation simultaneously, the centripetal force that water generates in the gap of 0.4~0.5mm height is also very few.Therefore to this
The sealing effect of invention influences also very little, so the sealing structure and method are effective.
It is as follows using the equipment applicable elements of sealing structure of the present invention：
1. work in water purification (ordinary tap water is through circulating filtration) should be in by sealing position, allow to have in water by
Remaining a small amount of mineral oil after filter.
2. it is located at sealing at 1 meter~1.5 meters of the depth of water.
3. equipment is allowed to rotate in water.Linear velocity at its sealing ring should be less than 2 meter per seconds.
It is caused at work the invention avoids equipment after being pressurized because of O-ring seal, generates movement and cause to deform, so as to
Avoid the O-ring seal caused by deformation damaged.
The foregoing is merely embodiments of the present invention, are not intended to limit the scope of the present invention.It is all in the present invention
Spirit and principle within any modification, equivalent replacement, improvement, extension etc., be all contained in protection scope of the present invention
It is interior.
Claims (10)
1. a kind of end face rotary dynamic sealing structure, including rotating disk (1), stationary disk (2) and rotary support (8), the rotation
The end face of disk (1) and stationary disk (2) is connected by rotary support (8), on the end face of the rotating disk (1) and stationary disk (2)
Equipped with minor groove (3), which is characterized in that by O-shaped close between the rotating disk (1) and stationary disk (2) and rotary support (8)
Seal seals.
2. end face rotary dynamic sealing structure according to claim 1, which is characterized in that the rotating disk (1) and stationary disk
(2) circumferentially it is equipped with to house the seal groove of O-ring seal on end face, the seal groove includes notch (41), stress
Side (43), bottom surface (44) and non-stress side (46), wherein notch (41) are shunk inwardly, the stress side (43) and non-stress side
(46) respectively outside the both sides of notch (41) center line, the non-stress side (46) and the O-ring seal being placed in the slot
Deformation Free up Memory (45) is equipped between circular surfaces.
3. end face rotary dynamic sealing structure according to claim 2, which is characterized in that the bottom surface for plane and with it is non-
Stress side (46) is located at the homonymy of notch (41) center line.
4. end face rotary dynamic sealing structure according to claim 2, which is characterized in that the stress side (43) and non-stress
Side (46) is arc surface.
5. end face rotary dynamic sealing structure according to claim 4, which is characterized in that the arc surface of the stress side (43)
Diameter is identical with the line footpath of O-ring seal.
6. end face rotary dynamic sealing structure according to claim 2, which is characterized in that the notch (41) and the stress
Stress side guide surface (42) and non-stress side guide surface (47), the stress are respectively equipped between side (43) and non-stress side (46)
Side guide surface (42) and non-stress side guide surface (47) are inclined-plane.
7. end face rotary dynamic sealing structure according to claim 6, which is characterized in that stress side guide surface (42) and
The angle α of non-stress side guide surface (47) and horizontal plane for 60 ° and with the notch (41) arc transition.
8. end face rotary dynamic sealing structure according to claim 2, which is characterized in that the rotating disk seal groove (4) and
The internal diameter of stationary disk seal groove (7) is bigger 10-15mm than the internal diameter of the O-ring seal.
9. end face rotary dynamic sealing structure according to claim 2, which is characterized in that the O-ring seal is close for rubber
Seal, Shao Er hardness are HS50~70.
10. end face rotary dynamic sealing structure according to claim 2, which is characterized in that be placed in the rotating disk sealing
The decrement of slot (4) and the O-ring seal in stationary disk seal groove (7) is 0.05~0.12mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611007239.7A CN108071803A (en) | 2016-11-15 | 2016-11-15 | End face rotary dynamic sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611007239.7A CN108071803A (en) | 2016-11-15 | 2016-11-15 | End face rotary dynamic sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108071803A true CN108071803A (en) | 2018-05-25 |
Family
ID=62163124
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611007239.7A Pending CN108071803A (en) | 2016-11-15 | 2016-11-15 | End face rotary dynamic sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108071803A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2460801Y (en) * | 2001-01-18 | 2001-11-21 | 王玉明 | Sealing device for spiral flute end capable of bidirectional rotation |
| CN202056205U (en) * | 2011-05-25 | 2011-11-30 | 洛阳瑞成轴承有限责任公司 | Sealing structure of turntable bearing |
| CN102287521A (en) * | 2011-07-29 | 2011-12-21 | 江阴凯迈机械有限公司 | Waterproof rotary driving device |
| CN103629923A (en) * | 2013-10-17 | 2014-03-12 | 陕西盛迈石油有限公司 | Rotation support positioning and sealing device |
| CN204716972U (en) * | 2015-05-04 | 2015-10-21 | 中国航空动力机械研究所 | Sealing mechanism and aeroengine |
-
2016
- 2016-11-15 CN CN201611007239.7A patent/CN108071803A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2460801Y (en) * | 2001-01-18 | 2001-11-21 | 王玉明 | Sealing device for spiral flute end capable of bidirectional rotation |
| CN202056205U (en) * | 2011-05-25 | 2011-11-30 | 洛阳瑞成轴承有限责任公司 | Sealing structure of turntable bearing |
| CN102287521A (en) * | 2011-07-29 | 2011-12-21 | 江阴凯迈机械有限公司 | Waterproof rotary driving device |
| CN103629923A (en) * | 2013-10-17 | 2014-03-12 | 陕西盛迈石油有限公司 | Rotation support positioning and sealing device |
| CN204716972U (en) * | 2015-05-04 | 2015-10-21 | 中国航空动力机械研究所 | Sealing mechanism and aeroengine |
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180525 |
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| RJ01 | Rejection of invention patent application after publication |