CN106439037A - Seal ring and mechanical seal device with combination groove end - Google Patents
Seal ring and mechanical seal device with combination groove end Download PDFInfo
- Publication number
- CN106439037A CN106439037A CN201611016454.3A CN201611016454A CN106439037A CN 106439037 A CN106439037 A CN 106439037A CN 201611016454 A CN201611016454 A CN 201611016454A CN 106439037 A CN106439037 A CN 106439037A
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- ring
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- 238000007789 sealing Methods 0.000 claims description 90
- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 16
- 239000012530 fluid Substances 0.000 abstract description 15
- 230000002093 peripheral effect Effects 0.000 abstract description 3
- 230000004323 axial length Effects 0.000 abstract 1
- 238000005192 partition Methods 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 3
- 210000002421 cell wall Anatomy 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 210000004027 cell Anatomy 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 230000001360 synchronised effect Effects 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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
-
- 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
- F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
- F16J15/3464—Mounting of the seal
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
- Sealing Devices (AREA)
Abstract
A seal ring and mechanical seal device with combination groove end are provided. The seal end of the seal ring is divided into evenly arranged shaped groove units by partition portions having end plane height, each shaped groove unit comprises a long groove and a short groove, every two grooves are adjacently opened to the peripheral edge of the seal ring, the groove ends of the short and long grooves at the seal end are positioned at peripheral parts of the seal ring having different radiuses respectively, the extension groove end of each short groove overlaps the sidewall of the adjacent long groove, and the rotationally directional leeward one of every long and short grooves is greater than the windward one in axial length. A stationary ring and/or rotating ring in the mechanical seal device employs the seal ring with combination groove end, it is possible to greatly improve dynamic pressure effect of an end fluid film, larger opening force, rigidity and bearing capacity are provided for the seal end, and the effect is more significant especially in the case of a small clearance.
Description
Technical field
The present invention relates to having the sealing ring of combination slot end face in end face fluid-tight, and it is close to have this combination slot end face
The mechanically-sealing apparatus of seal ring.
Background technology
Mechanical sealing technology is widely used to answering of numerous rotating machinery axial direction end face seals with its superior performance
With in, the pump of such as various types, compressor, decompressor, seperator, reactor etc. rotate class machine shaft end seal.At present
In the basic structure of fluid end face non-contact mechanical seal device having been reported and/or using, generally include stationary ring
（Stationary ring）, rotating ring（Rotating ring）, stationary seat, axle sleeve, trundle, tolerance ring, clamping sleeve, throw-out collar, spring, the composition group such as stop pin
Part.Stationary ring and rotating ring coaxial line are oppositely arranged, and its relative end face is sealing surface.Stationary ring radially empty set on stationary seat, with
Static ring seat keeps geo-stationary, and it is axially supported by throw-out collar and spring floating, and circumference, by anti-rotation finger setting, makes stationary ring only edge
Axially free float and can not rotate with the axis.Rotating ring with radially by tolerance ring swelling on the external cylindrical surface of axle sleeve, axial direction and axle
The step surface contact of set compacted set axial compression, circumference is fixed together with axle sleeve by trundle, makes the rotating ring can be with axle sleeve
Synchronous rotary together with rotary shaft.
Whether mechanical seal is contacted by sealing surface, can be divided into contact and contactless two kinds, wherein again with contactless
There is higher stability and longer service life.A kind of typical way of non-contact mechanical seal is close using medium
Flowing between front cover forms hydrodynamic effect, to obtain enough fluid film opening forces and sufficiently high fluid film rigidity, from
And make two seal faces by fluid film separately, realize contactless operating.End face hydrodynamic effect is main and seal face
Surface texture, sealing surface relative rotation speed, dielectric viscosity are related, and sealing surface relative rotation speed and dielectric viscosity often depend among these
In using sealing unit field condition, technically more improvable be seal face surface texture.Common at present close
The surface texture setting measure of end-blocking face is on the one or both sides end face in stationary ring two seal faces relative with rotating ring, opens up
Have by the same form isolated part with transverse plane height（Weir area）Separate the type groove form uniformly arranged, wherein to wait groove
Deep helicla flute, the end face seal of T-shape slot are the most typical.How to design better seal face surface texture, strengthen end face
The dynamic pressure effect of fluid, to increase end face fluid film bearing capacity and fluid film rigidity, thus lift-off seal operation stability,
Increase the service life eventually, be one of Main way of non-contact mechanical seal end face groove type research.
Content of the invention
Present invention firstly provides a kind of sealing ring with combination slot end face for mechanically-sealing apparatus, and have
The mechanically-sealing apparatus of this combination slot end face sealing ring.
The present invention has the sealing ring of combination slot end face, is by having transverse plane height on the seal face of sealing ring
Isolated part（Sealing weir）It is divided into the type groove unit of uniform arrangement, in each type groove unit, include long and short two grooves.Wherein：
Two groove adjacent apertures in the homonymy circumference of sealing ring, the corresponding sealing ring center of wherein short channel opening arc length
The ratio of the central angle at central angle sealing ring center corresponding with elongated slot opening arc length is 1.3 ~ 0.8.Ratio is crossed conference and is reduced elongated slot
Circumferential width, so that the dynamic pressure effect in elongated slot region is declined；Ratio is too little, is unfavorable for introducing compared with multimedium under small-gap suture state
To between sealing surface, also resulting in dynamic pressure effect can not be obviously improved；
The end face of the groove that short groove and elongated slot extend on seal face is respectively at the circumference of sealing ring different radii, and
The extension slot end face of short groove with the side wall of adjacent elongated slot overlap mutually.For example, when the short groove in two grooves is in the back of the body of direction of rotation
During wind position, then it extends on seal face groove end face and the cell wall of elongated slot leeward side overlap mutually；If short in two grooves
When groove is in the upwind position of direction of rotation, then the groove end face that it extends on seal face is intersected with the cell wall of elongated slot windward side
Folded；
The axial depth being in the groove of leeward position of direction of rotation in two grooves is 2 ~ 30 microns, is in upwind position
The axial depth of groove is 1 ~ 15 micron, and the axial depth of leeward location groove is more than the axial depth of upwind position groove, wherein excellent
The groove axial depth of leeward position of choosing is 3 ~ 1.2 with the ratio of the axial depth of the groove of upwind position.
In the structure of above-mentioned sealing ring, the radical length between the external diameter of sealing ring and internal diameter is that the radial direction of seal face is long
Degree；Long and short two groove in the type groove unit being opened on the circumference of sealing ring and extending on seal face, respective by it
Radial distance between the groove end face that periphery notch extends to each leisure seal face, for the radical length of its respective groove.Wherein,
The ratio preferably 0.3 ~ 0.8 of the radical length of elongated slot and the seal face radical length of sealing ring.If this ratio is too small,
The rate-of flow flowing into groove area is few, is unfavorable for forming sufficient hydrodynamic；Ratio is excessive, then on seal face slotless area footpath
Less to length, it is unfavorable for effectively stoping the leakage of medium.
On the other hand, the radical length of short groove and the ratio of the radical length of elongated slot are preferably 0.4 ~ 0.6.This ratio mistake
Little, it is unfavorable for that medium flows into groove area to form the hydrodynamic of flow point；If ratio is excessive, also can not effectively lifting fluid dynamic pressure,
The increase of leakage rate also can be caused simultaneously.
On seal face, by described type groove unit the extension slot end face of short groove with the side wall of adjacent elongated slot intersect
Folded, therefore by its overlapping degree is altered or modified, also can reach change and adjustment medium seal clearance flow regime and
The purpose of dynamic pressure effect.Wherein, described short groove elongated slot adjacent overlap sidewalls part groove extend the central angle of end face arc length with
The ratio of the described central angle of short channel opening arc length, preferably for 0.3 ~ 0.6.If overlapping degree is excessive, that is, this ratio is big, makes Jie
Matter reduction amount of flow-passing surface in the flow of media of two groove intersections is affected, and is unfavorable for obtaining sufficient extrusion effect, from
And affect dynamic pressure effect, and conversely, the total amount of elongated slot medium can be lowered into again, the dynamic pressure of impact elongated slot windward side and bottom land medium
Effect.
In the type groove unit of above-mentioned sealing ring, position to described long and short two grooves, can be according to concrete seal request
Difference and arrange.Wherein, the groove located at upwind position by elongated slot, short groove is the groove being in leeward position, can be used as a kind of normal
Optimal way.
Equally, according to concrete equipment and/or sealing needs, two grooves in described type groove unit can be opened on sealing ring
Outboard peripheries portion or inner peripheral portion.Wherein, conventional is the form that two grooves are all opened on sealing ring outboard peripheries portion, that is,
Type groove unit is arranged in the radial outside position of seal face.Now, two grooves in type groove unit prolong on seal face
The groove end face stretched is intermarginal with sealing ring inner circumferential, then for having the seal face of transverse plane height（Seals dam）；Vice versa.
On seal face, the setting quantity of type groove can affect the hydrodynamic effect of seal face, and the increasing with slot number
Greatly, opening force, leakage rate and liquid film stiffness would generally first increase rapidly, then increase slow and gradually steady.Therefore general feelings
Under condition, on the premise of meeting each side requirement, increase the setting quantity of above-mentioned type groove unit in seal face, be conducive to improving
Sealing property.But the comprehensive satisfaction factor such as needs and processing cost, the quantity one that described type groove unit is arranged on seal face
As at least 6, preferred quantity is 6 ~ 30.
For long and short two grooves in described type groove unit, particularly do not require, can be using existing at present
The groove of the conventionally form of report and/use.Because set grooved on seal face is different, the fluid under sealing state is moved
Pressure effect, opening force, leakage rate, the impact of the factor such as liquid film stiffness, and the equipment that is suitable for and/or working condition etc. have
Institute is different.Although to long and short two grooves in type groove unit can be chosen without respectively as needed need to have special restriction
Or require, but it is understood that, the difference between two groove grooveds is bigger, also can be more to the various influence factors of sealing effectiveness
Complexity or control.Therefore generally, long and short two grooves in same type groove unit, the preferably groove of same type, for example
It is all helicla flute, straight-line groove, circular arc type groove etc., even if taking for adapting to or meet the needs such as specific equipment and/or operating mode
Inhomogeneity type groove is combined, and is also preferentially mutually combined using the close groove of grooved（As helicla flute and arc groove etc.）.
During specific design, according to the actual requirement to sealing, first can determine two grooves in type groove unit in the usual way
One of after, relevant parameter relation between usual manner further according to another groove and above-mentioned two grooves, obtain another
Groove.So that two grooves are helicla flute as a example, according to helicla flute edge molded line general equation 1., can first design type groove unit
In elongated slot（Or short groove）, according still further to this formula and according to above-mentioned relevant parameter relation extents between two grooves, you can obtain with
The short groove being disposed adjacent（Or elongated slot）：
①.
Formula 1. inrPolar radius for log spiral in polar coordinate（r i ≤r≤r 0 ）,r i Base for log spiral
Circle is the radius of sealing ring inner circle,φPolar angle for log spiral section start（0~180°）,θFor log spiral polar angle（Can
Determine as needed）,βFor helical angle（Can determine as needed）.
Above-mentioned have combination groove sealing ring on the basis of, invention further provides one kind has combination groove sealing ring
Mechanically-sealing apparatus, its basic structure is identical with current similar machines sealing device, all has what coaxial line was oppositely arranged
Stationary ring and rotating ring, are seal face between its relative end face, stationary ring circumference are mutually located with stationary seat by stop pin,
And through axially arranged spring and throw-out collar floating support in stationary seat；Rotating ring can warp beam sleeve be in transmission connection with axle.Wherein,
At least one of described stationary ring and rotating ring, use and above-mentioned are provided with described type groove unit on seal face
Combination slot end face sealing ring.
Calculating shows, using the above-mentioned mechanically-sealing apparatus with combination groove sealing ring of the present invention, can significantly improve sealing
The dynamic pressure effect of end face fluid film, makes there is bigger opening force, rigidity and bearing capacity on seal face, especially in small-gap suture
Under state（Gap is less than 3 microns）Hence it is evident that having ratio conventional seals end face preferably fluid membrane property, increase effectively end face stream
Body dynamic pressure effect.
The sealing ring of said structure of the present invention and its mechanically-sealing apparatus using this sealing ring, have and are widely suitable for
Property.For example, it is possible to be arranged as required to the layout for multiple seals style, including mechanical single seal, double seals, tandem
Sealing（More than two-stage）, series connection band in the middle of labyrinth（More than two-stage）Deng can also be with floating-ring seal, carbon ring seal, labyrinth seal
Consist of combined seal structure application Deng other seals style.
Below in conjunction with the specific embodiment by accompanying drawing illustrated embodiment, the above of the present invention is remake further
Describe in detail.But this scope being interpreted as the above-mentioned theme of the present invention should not be only limitted to Examples below.Without departing from the present invention
In the case of above-mentioned technological thought, the various replacements made according to ordinary skill knowledge and customary means or change, all should
It is included within the scope of the invention.
Brief description
Fig. 1 is a kind of structural representation of mechanically-sealing apparatus using the present invention with combination slot end face sealing ring.
Fig. 2 is a kind of arrangement view on seal face for the type groove unit of sealing ring in Fig. 1.
Fig. 3 is the mplifying structure schematic diagram of one of Fig. 2 seal face type groove unit area.
Specific embodiment
Shown in Fig. 1 is a kind of mechanically-sealing apparatus using the present invention with combination slot end face sealing ring.With normal at present
The structure of the mechanically-sealing apparatus of rule is the same, has stationary ring 5 and the rotating ring 7 that coaxial line is oppositely arranged, its relative end face
Between for having gaph 0Seal face.h 0May generally be 0 ~ 0.025 millimeter, specifically can be considered according to practical situation and carry out
Adjustment.For example, standard machinery is sealed, two seal faces are substantially at the gapless state of directly contact；Non- for gas
The slotless interval gap of contact seal end faceh 0Ordinarily be about 0.002 ~ 0.005 millimeter；The contactless machine for some liquid films
The end face slotless interval gap of tool sealingh 0Typically about 0.01 ~ 0.025 millimeter.By stop pin 14 and stationary ring in stationary ring 5 circumference
Seat 8 is mutually located, and through axially arranged spring 13 and throw-out collar 12 floating support in stationary seat 8；Rotating ring 7 is through trundle 10
It is in transmission connection with axle sleeve 9 and axle 11.Stationary ring 5 therein and/or rotating ring 7 are uniformly to arrange in the outer circumferential side of seal face
There are 6 ~ 30（Such as 12）The combination slot end face sealing ring of the type groove unit 6 being collectively constituted by elongated slot 2 and short groove 1.
Fig. 2 and Fig. 3 is a kind of version in Fig. 1 with combination slot end face sealing ring.The inside radius r4 of sealing ring is
60mm, outer radius r1 is 81mm.By the isolation part with transverse plane height on the seal face of sealing ring（Sealing weir）3 separations
The mutually isostructural type groove unit 6 uniformly arranged, includes in each type groove unit 6 all using the elongated slot 2 of spiral flute type and short
Groove 1, and short groove 1 is in the leeward position of direction of rotation, elongated slot 2 is in upwind position.Two groove adjacent apertures are in sealing ring
Outboard peripheries portion, and the central angle at the corresponding sealing ring center of short groove 1 opening arc length ABθ 1Corresponding with elongated slot 2 opening arc length BC
The central angle at sealing ring centerθ 2Ratio, beθ 1:θ 2=1.The end face of the groove that short groove 1 and elongated slot 2 extend on seal face is respectively
It is in sealing ring different radii r2（r2=76mm）And r3（r3=71mm）Circumference at, and the extension slot end face of short groove 1 is adjacent with institute
The side wall 15 of elongated slot 2 overlaps mutually.Short groove 1 elongated slot 2 the groove of adjacent side wall 15 overlapping part extend the central angle of end face arc length DEθ 3Described central angle with short groove 1 opening arc length ABθ 1Ratio, beθ 3:θ 1=0.4.The groove that two grooves extend on seal face
End face and the intermarginal seal face for having transverse plane height of inner circumferential of sealing ring（Seals dam）4.
Two grooves by its circumferential openings to each leisure seal face, respectively should by the radial distance between the groove end face of extension
The radical length of groove.The radical length of wherein short groove 1 and the scope of the ratio of the radical length of elongated slot 2 are 0.5, and the footpath of elongated slot 2
It is 0.48 to the ratio of length and the radical length of seal face.
In described two grooves, it is in the axial depth of the short groove 1 of leeward positionh g1For 10 microns, the axial depth of groove 2h g2
For 5 microns.
During specific design, according to the actual requirement to seal parameters/condition, can be according to the public affairs of above-mentioned helicla flute edge molded line
1. formula designs the elongated slot 2 obtaining in two grooves（Or short groove 1）, further according to formula 1. and two groove between above-mentioned parameters relationship require,
Obtain short groove 1 accordingly（Or elongated slot 2）.Formula 1. in relevant parameter ibid, polar radius therein isr i ≤r≤r 0 , logarithm spiral shell
The polar angle of spin line section startφFor 0 ~ 180 °, log spiral polar angleθCan be determined according to specific requirement, helical angleβFor 5 °～
30°.
Show with the comparison between calculation results of the normal spiral groove of same type dimensional parameters specification, when sealing surface gap is micro- for 1
Meter Shi, using the medium opening force having between this example sealing surface of combination slot end face sealing ring, increases about than normal spiral groove
90%, fluid film rigidity about increases 900%；When sealing surface gap is 2 microns, the sealing surface medium opening force of combination slot of the present invention
About increase about 60% than normal spiral groove, fluid film rigidity about increases 650%.Indicate the present invention and there is the close of combination slot end face
Seal ring can effectively increase the dynamic pressure effect of end face fluid, and particularly when small-gap suture seals, the present invention has combination slot end face
The raising of sealing ring convection cell film rigidity and opening force can have bigger advantage.
Claims (10)
1. there is the sealing ring of combination slot end face, it is characterized in that on the seal face of sealing ring by have transverse plane height every
From portion（3）Separate the type groove unit uniformly arranged（6）, each type groove unit（6）In include long and short two grooves（2,1）, its
In：
Two groove adjacent apertures are in the homonymy circumference of sealing ring, wherein short groove（1）Opening arc length（AB）In corresponding sealing ring
The central angle of the heart（θ 1）With elongated slot（2）Opening arc length（BC）The central angle at corresponding sealing ring center（θ 2）Ratio be 1.3 ~ 0.8；
Short groove（1）And elongated slot（2）The end face of the groove extending on seal face is respectively at sealing ring different radii（R2, r3）'s
At circumference, and short groove（1）Extension slot end face with institute an adjacent elongated slot（2）Side wall（15）Overlap mutually；
It is in the axial depth of the groove of leeward position of direction of rotation in two grooves（h g1）For 2 ~ 30 microns, it is in upwind position
The axial depth of groove（h g2）For 1 ~ 15 micron, and the axial depth of leeward location groove（h g1）Axially deep more than upwind position groove
Degree（h g2）.
2. sealing ring as claimed in claim 1, it is characterized in that described two grooves by its circumferential openings to each leisure seal face
The upper radial distance extending between non-groove end face is the radical length of groove, wherein short groove（1）Radical length and elongated slot（2）Radial direction
Length ratio is 0.4 ~ 0.6.
3. sealing ring as claimed in claim 1, is characterized in that described short groove（1）In elongated slot（2）Adjacent overlap sidewalls part
Groove extends end face arc length（DE）Central angle（θ 3）, with short groove（1）Opening arc length（AB）Described central angle（θ 1）Ratio be 0.3 ~
0.6.
4. sealing ring as claimed in claim 1, is characterized in that the groove axial depth of described leeward position（h g1）With upwind position
Groove axial depth（h g2）Ratio be 3 ~ 1.2.
5. sealing ring as claimed in claim 1, is characterized in that described elongated slot（2）Radical length and sealing ring seal face
The ratio of radical length is 0.3 ~ 0.8.
6. sealing ring as claimed in claim 1, is characterized in that elongated slot（2）For being in the groove of upwind position, short groove（1）For being in
The groove of leeward position.
7. sealing ring as claimed in claim 1, is characterized in that described type groove unit（6）The footpath being arranged on seal face is outside
In side, type groove unit（6）In the end face of groove that extends on seal face of two grooves intermarginal with the inner circumferential of sealing ring be
There is the seal face of transverse plane height.
8. the sealing ring as described in one of claim 1 to 7, is characterized in that described type groove unit（6）In two grooves be similar
The groove of type, preferably helicla flute.
9. sealing ring as claimed in claim 8, is characterized in that the described type groove unit of setting on seal face（6）Quantity is at least
For 6, preferably 6 ~ 30.
10. there are the mechanically-sealing apparatus of combination groove sealing ring, there is the stationary ring that coaxial line is oppositely arranged（5）And rotating ring
（7）, it is seal face between its relative end face, stationary ring（5）By stop pin in circumference（14）With stationary seat（8）It is mutually located,
And through axially arranged spring（13）And throw-out collar（12）Floating support is in stationary seat（8）In；Rotating ring（7）Warp beam sleeve（9）With axle
（11）It is in transmission connection, it is characterized in that described stationary ring（5）And/or rotating ring（7）It is to arrange just like power on seal face
Profit requires the type groove unit described in one of 1 to 9（6）Combination slot end face sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611016454.3A CN106439037B (en) | 2016-11-18 | 2016-11-18 | Sealing ring and mechanically-sealing apparatus with combination slot end face |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611016454.3A CN106439037B (en) | 2016-11-18 | 2016-11-18 | Sealing ring and mechanically-sealing apparatus with combination slot end face |
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| Publication Number | Publication Date |
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| CN106439037A true CN106439037A (en) | 2017-02-22 |
| CN106439037B CN106439037B (en) | 2018-06-29 |
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| CN105952900A (en) * | 2016-07-10 | 2016-09-21 | 西华大学 | Sealing ring with wave-shaped groove end surface and mechanical sealing device |
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| US11608897B2 (en) | 2018-08-01 | 2023-03-21 | Eagle Industry Co., Ltd. | Slide component |
| US11821462B2 (en) | 2018-08-24 | 2023-11-21 | Eagle Industry Co., Ltd. | Sliding member |
| US11815184B2 (en) | 2018-11-30 | 2023-11-14 | Eagle Industry Co., Ltd. | Sliding component |
| US11821521B2 (en) | 2018-12-21 | 2023-11-21 | Eagle Industry Co., Ltd. | Sliding component |
| KR20210114544A (en) * | 2019-02-14 | 2021-09-23 | 이구루코교 가부시기가이샤 | sliding parts |
| CN113490796A (en) * | 2019-02-14 | 2021-10-08 | 伊格尔工业股份有限公司 | Sliding component |
| EP3926186A4 (en) * | 2019-02-14 | 2022-11-16 | Eagle Industry Co., Ltd. | Sliding component |
| US11933405B2 (en) | 2019-02-14 | 2024-03-19 | Eagle Industry Co., Ltd. | Sliding component |
| US11892081B2 (en) | 2019-07-26 | 2024-02-06 | Eagle Industry Co., Ltd. | Sliding component |
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