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1. 发明授权

US11543033B2 Mechanical seal 有权
公开(公告)号：US11543033B2
公开(公告)日：2023-01-03
申请号：US16468649
申请日：2017-12-27
申请人： EAGLE INDUSTRY CO., LTD.
发明人： Masatoshi Itadani , Yuki Sasaki , Keiichi Chiba , Kenji Kiryu , Tetsuzo Okada
IPC分类号： F16J15/36
摘要： In an exemplary embodiment, a mechanical seal for sealing a fluid flowing outwardly radially from sliding surfaces S where a stationary ring 221 and a rotating ring 211 slide against each other, includes: a bellows 222 interposed between the stationary ring 221 and a stationary wall 226; a case member 223 for holding an outer cylindrical part 222c of the bellows 222 to the stationary ring 221; and a holding member 224 fitted to an inner cylindrical part 222a of the bellows 222, and having an axial length substantially equal to a length fitted to the inner cylindrical part 222a, wherein the bellows 222 has a curved part 222b between the outer cylindrical part 222c and the inner cylindrical part 222a, and the case member 223 is provided with a wall part 223a covering the entire periphery of the radial outer side of the curved part 222b.

2. 发明授权

US10352449B2 Mechanical seal 有权
公开(公告)号：US10352449B2
公开(公告)日：2019-07-16
申请号：US15326410
申请日：2015-07-14
申请人： EAGLE INDUSTRY CO., LTD.
发明人： Masatoshi Itadani
IPC分类号： F04C2/00 , F16J15/32 , F16J15/34 , F16J15/36 , F04D13/06 , F04D29/043 , F04D29/12 , F04D29/18 , F04D29/40 , F16J15/00
摘要： A mechanical seal has a stationary side seal ring and a rotating side seal ring in opposed sliding contact with the stationary side seal ring. One seal ring of the stationary side seal ring and the rotating side seal ring is disposed on a sealed fluid side and constitutes a slide bearing which supports the rotating shaft. The other seal ring is disposed on the opposite side to the sealed fluid side, and a pressing member is attached to the other seal ring for biasing the other seal ring in the axial direction to press sealing faces of both the seal rings.

3. 发明授权

US10344867B2 Sliding component 有权
公开(公告)号：US10344867B2
公开(公告)日：2019-07-09
申请号：US15505571
申请日：2015-08-26
申请人： EAGLE INDUSTRY CO., LTD.
发明人： Masatoshi Itadani , Kazumasa Sungawa , Yuichiro Tokunaga , Hideyuki Inoue , Takeshi Hosoe , Ryoma Yamakawa , Yuta Negishi , Kenji Kiryu , Keiichi Chiba , Akira Yoshino , Hiroshi Kubota
IPC分类号： F16J15/34 , F04D29/12
摘要： In an embodiments, a slide component includes a pair of slide parts that relatively slide on each other, one of the slide parts being provided in a sealing face with fluid circulation grooves 10 that communicate with a high-pressure fluid side via inlet portions and outlet portions and are separated from a low-pressure fluid side by land portions, the other of the slide parts being circumferentially provided in a sealing face with a plurality of interference grooves 15, 16, 17, 20 for producing pressure variations in a fluid in the fluid circulation grooves 10, adjacent ones of the interference grooves 15, 16, 17, 20 being set to have different shapes.

4. 发明授权

US10337620B2 Sliding component 有权
公开(公告)号：US10337620B2
公开(公告)日：2019-07-02
申请号：US15573118
申请日：2016-05-13
申请人： EAGLE INDUSTRY CO., LTD.
发明人： Yuichiro Tokunaga , Hideyuki Inoue , Wataru Kimura , Tetsuya Iguchi , Keiichi Chiba , Masatoshi Itadani , Hikaru Katori
IPC分类号： F16J15/34 , F02B39/00 , F16J15/40
摘要： In an embodiment, a sliding component includes a pair of sliding parts (a stationary-side seal ring 7 and a rotating-side seal ring 4) that relatively slide on each other and each have a sliding face S formed radially for sealing sealed fluid from leaking. The sliding face S of at least one sliding part is provided with dynamic pressure generation grooves 10 spaced in a non-communicating manner from the sealed-fluid side and the leakage side by lands R of both sliding faces, and is provided with fluid introduction holes 11 between leakage-side ends 10a of the grooves 10 and the leakage side, for communicating the grooves 10 and the leakage side. Each fluid introduction holes 11 is configured such that a dynamic-pressure-generation-groove-side opening 11a open to a corresponding one of the grooves 10 is axially displaced from a leakage-side opening 11b open to the leakage side.

5. 发明授权

US09841106B2 Sliding parts 有权
公开(公告)号：US09841106B2
公开(公告)日：2017-12-12
申请号：US15122483
申请日：2015-06-25
申请人： EAGLE INDUSTRY CO., LTD.
发明人： Masatoshi Itadani , Yuichiro Tokunaga
IPC分类号： F16J15/00 , F16J15/34 , F16J15/16
CPC分类号： F16J15/34 , F16J15/164 , F16J15/3412
摘要： A pair of sliding parts includes a plurality of dimples formed along a circumferential direction with substantially fixed width from a cavitation formation region on an upstream side of each of the dimples to a positive pressure generation region on a downstream side of each of the dimples. An upstream beginning end of the cavitation formation region is formed in a tapered shape from a low pressure fluid side toward a high pressure fluid side, and disposed so as to overlap a positive pressure generation region of the dimple arranged on the upstream side in a radial direction. A low pressure fluid side edge of the positive pressure generation region is formed in a tapered shape from the low pressure fluid side toward the high pressure fluid side and smoothly connected to a low pressure fluid side edge of the cavitation formation region.

6. 发明授权

US09829109B2 Sliding component 有权
公开(公告)号：US09829109B2
公开(公告)日：2017-11-28
申请号：US15400461
申请日：2017-01-06
申请人： EAGLE INDUSTRY CO., LTD.
发明人： Masatoshi Itadani , Yuichiro Tokunaga , Kazumasa Sunagawa , Hikaru Katori
IPC分类号： F16J15/40 , F16J15/34
CPC分类号： F16J15/3412 , F16J15/348
摘要： Even when a fluid discharge for discharging high-pressure fluid (sealed fluid) to a high-pressure side of a sealing face is provided, the disclosed sliding component prevents precipitation, adhesion and accumulation of a deposition-causing substance through a dehydration condensation reaction between the high-pressure fluid and low-pressure fluid on the sealing face, and also prevents occurrence of cavitation which would otherwise take place in association with a sudden pressure drop due to a discharge of fluid. Disclosed is a pair of sliding components provided, on a high-pressure side of one of relatively sliding sealing faces thereof, with a fluid discharge for discharging fluid to a high-pressure fluid side, wherein a buffer groove for reducing penetration of low-pressure fluid toward the high-pressure fluid side is provided in the sealing face S on a low-pressure side of the fluid discharge.

7. 发明申请

US20170198813A1 MECHANICAL SEAL 审中-公开
公开(公告)号：US20170198813A1
公开(公告)日：2017-07-13
申请号：US15326410
申请日：2015-07-14
申请人： EAGLE INDUSTRY CO., LTD.
发明人： Masatoshi Itadani
IPC分类号： F16J15/32 , F04D29/12 , F04D29/043 , F04D13/06 , F04D29/40 , F16J15/00 , F04D29/18
CPC分类号： F16J15/32 , F04C2/00 , F04D13/06 , F04D29/043 , F04D29/124 , F04D29/18 , F04D29/406 , F16J15/002 , F16J15/34 , F16J15/3464 , F16J15/36
摘要： A mechanical seal has a stationary side seal ring and a rotating side seal ring in opposed sliding contact with the stationary side seal ring. One seal ring of the stationary side seal ring and the rotating side seal ring is disposed on a sealed fluid side and constitutes a slide bearing which supports the rotating shaft. The other seal ring is disposed on the opposite side to the sealed fluid side, and a pressing member is attached to the other seal ring for biasing the other seal ring in the axial direction to press sealing faces of both the seal rings.

8. 发明授权

US09677670B2 Sliding parts 有权
公开(公告)号：US09677670B2
公开(公告)日：2017-06-13
申请号：US15100272
申请日：2014-12-05
申请人： EAGLE INDUSTRY CO., LTD.
发明人： Masatoshi Itadani , Kazumasa Sunagawa
IPC分类号： F16J15/34 , F16C33/72 , F16C33/74
CPC分类号： F16J15/3412 , F16C17/045 , F16C33/72 , F16C33/743 , F16C2360/44 , F16J15/34 , F16J15/342
摘要： Sliding parts of a pair of annular bodies include sealing faces that relatively slide on each other. A reversed Rayleigh step mechanism serving as a negative pressure generation mechanism is provided in at least one of the sealing faces, and a negative pressure generation groove that forms the reversed Rayleigh step mechanism is provided in an arc shape along the circumferential direction of the sealing face so as to be isolated from a high pressure fluid side and a low pressure fluid side by a land section.

9. 发明授权

US09581200B2 Sliding parts 有权
标题翻译：滑动部件
公开(公告)号：US09581200B2
公开(公告)日：2017-02-28
申请号：US14900053
申请日：2014-09-25
申请人： EAGLE INDUSTRY CO., LTD.
发明人： Masatoshi Itadani , Kazumasa Sunagawa , Yuuichiro Tokunaga , Ryoma Yamakawa
IPC分类号： F16J15/34 , F16C33/74
CPC分类号： F16C33/74 , F16J15/3412
摘要： A fluid is actively taken into sealing faces and discharged from the sealing faces to prevent concentration of sediment causative substances on the sealing faces and prevent generation of sediment while preventing leakage of the fluid taken into the sealing faces to a low pressure fluid side. A fluid circulation groove includes an inlet side section where the fluid comes in from a high pressure fluid side and an outlet side section where the fluid goes out to the high pressure fluid side in one of sealing faces of a pair of sliding parts that slide on each other. The fluid circulation groove is isolated from the low pressure fluid side by a land section. Groove width of the outlet side section of the fluid circulation groove is gradually expended toward an outlet end.
摘要翻译：流体被积极地进入密封面并从密封面排出，以防止密封面上的沉积物引起物质的浓缩，并防止沉积物的产生，同时防止进入密封面的流体泄漏到低压流体侧。流体循环槽包括流体从高压流体侧入口的入口侧部分和在滑动的一对滑动部件的一个密封面中的流体流出到高压流体侧的出口侧部分彼此。流体循环槽通过陆部与低压流体侧隔离。流体循环槽的出口侧部分的槽宽逐渐朝向出口端膨胀。

10. 发明申请

US20150123350A1 SLIDING COMPONENT 有权
标题翻译：滑动组件
公开(公告)号：US20150123350A1
公开(公告)日：2015-05-07
申请号：US14400269
申请日：2013-07-31
申请人： EAGLE INDUSTRY CO., LTD.
发明人： Masatoshi Itadani , Yuichiro Tokunaga
IPC分类号： F16J15/34
CPC分类号： F16J15/3412 , F16J15/3424
摘要： A sliding component, which achieves both sealing and lubrication by preventing cavitation from occurring in the dynamic-pressure generation mechanism and thereby solving the problem of leakage that will otherwise result from such cavitation, is characterized in that, on a sealing face of one of a pair of sliding parts that slide against each other, extremely shallow grooves constituting a Rayleigh step mechanism are provided in a manner facing the high-pressure fluid side of the sealing face, while deep fluid-introduction grooves for introducing the high-pressure fluid are provided on the upstream side of the extremely shallow grooves in a manner continuing to the high-pressure fluid side.
摘要翻译：通过防止在动压发生机构中发生气穴并由此解决否则由于这种气蚀引起的泄漏的问题，实现密封和润滑的滑动部件的特征在于，在一个一对相对滑动的滑动部件，以与密封面的高压流体侧相对的方式设置构成瑞利阶梯机构的非常浅的槽，同时设置用于引入高压流体的深的流体导入槽在连续高压流体侧的方式在极浅槽的上游侧。

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