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公开(公告)号：US10443737B2
公开(公告)日：2019-10-15
申请号：US15521608
申请日：2015-10-28
Applicant: EAGLE INDUSTRY CO., LTD.
Inventor： Masatoshi Itadani , Kazumasa Sunagawa , Yuichiro Tokunaga , Hideyuki Inoue , Takeshi Hosoe , Ryoma Yamakawa , Yuta Negishi , Kenji Kiryu , Keiichi Chiba , Akira Yoshino , Hiroshi Kubota
Abstract: In an embodiment, a slide component includes one slide part 5 provided, on a low-pressure side of a sealing face thereof, with a negative pressure generation mechanism 10 including a negative pressure generation groove 10. The negative pressure generation groove 10a communicates with a high-pressure fluid side and is separated from a low-pressure fluid side by a land portion R. Another slide part 1 is provided, in a sealing face thereof, with at least one interference groove 15 communicating with the high-pressure fluid side for producing pressure variations in a fluid in the negative pressure generation groove 10a. The at least one interference groove 15 has an end 15a on an inside-diameter side extending to a position to radially overlap the negative pressure generation groove 10a.
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公开(公告)号：US20160033045A1
公开(公告)日：2016-02-04
申请号：US14758765
申请日：2013-12-19
Applicant: EAGLE INDUSTRY CO., LTD.
Inventor： Masatoshi Itadani , Yuichiro Tokunaga , Kazumasa Sunagawa , Hikaru Katori
IPC: F16J15/34
CPC classification number: F16J15/3412 , F16J15/348
Abstract: 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.
Abstract translation: 即使设置用于将高压流体（密封流体）排出到密封面的高压侧的流体排出口，所公开的滑动部件也可以防止沉积，粘附和堆积沉积物质通过脱水缩合反应 密封面上的高压流体和低压流体，并且还防止与由于流体排放引起的突然的压降相关联地发生的气蚀的发生。 公开了一种滑动部件，其在其相对滑动的密封面之一的高压侧上设置有用于将流体排放到高压流体侧的流体排放，其中用于减少低压渗透的缓冲槽 朝向高压流体侧的流体设置在流体排出口的低压侧的密封面S中。
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公开(公告)号：US20170130844A1
公开(公告)日：2017-05-11
申请号：US15400461
申请日：2017-01-06
Applicant: EAGLE INDUSTRY CO., LTD.
Inventor： Masatoshi Itadani , Yuichiro Tokunaga , Kazumasa Sunagawa , Hikaru Katori
IPC: F16J15/34
CPC classification number: F16J15/3412 , F16J15/348
Abstract: 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.
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公开(公告)号：US20170114902A1
公开(公告)日：2017-04-27
申请号：US15400376
申请日：2017-01-06
Applicant: EAGLE INDUSTRY CO., LTD.
Inventor： Masatoshi Itadani , Yuichiro Tokunaga , Kazumasa Sunagawa , Hikaru Katori
IPC: F16J15/34
CPC classification number: F16J15/3412 , F16J15/348
Abstract: 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.
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公开(公告)号：US09829109B2
公开(公告)日：2017-11-28
申请号：US15400461
申请日：2017-01-06
Applicant: EAGLE INDUSTRY CO., LTD.
Inventor： Masatoshi Itadani , Yuichiro Tokunaga , Kazumasa Sunagawa , Hikaru Katori
CPC classification number: F16J15/3412 , F16J15/348
Abstract: 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.
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Patent Agency Ranking
公开(公告)号：US09677670B2
公开(公告)日：2017-06-13
申请号：US15100272
申请日：2014-12-05
Applicant: EAGLE INDUSTRY CO., LTD.
Inventor： Masatoshi Itadani , Kazumasa Sunagawa
CPC classification number: F16J15/3412 , F16C17/045 , F16C33/72 , F16C33/743 , F16C2360/44 , F16J15/34 , F16J15/342
Abstract: 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.
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公开(公告)号：US09581200B2
公开(公告)日：2017-02-28
申请号：US14900053
申请日：2014-09-25
Applicant: EAGLE INDUSTRY CO., LTD.
Inventor： Masatoshi Itadani , Kazumasa Sunagawa , Yuuichiro Tokunaga , Ryoma Yamakawa
CPC classification number: F16C33/74 , F16J15/3412
Abstract: 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.
Abstract translation: 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。
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公开(公告)号：US10655736B2
公开(公告)日：2020-05-19
申请号：US15739973
申请日：2016-06-23
Applicant: EAGLE INDUSTRY CO., LTD.
Inventor： Masatoshi Itadani , Kazumasa Sunagawa , Yuichiro Tokunaga , Hideyuki Inoue , Takeshi Hosoe , Ryoma Yamakawa , Yuta Negishi , Kenji Kiryu , Keiichi Chiba , Akira Yoshino , Hiroshi Kubota
Abstract: In an embodiment, in a sliding component, a sliding face of a stationary-side seal ring 6 has a fluid circulation groove 10 communicating with a high-pressure fluid side via an entrance portion 10a and an exit portion 10b. A rotating-side seal ring 5 has a larger outer diameter and a smaller inner diameter than the seal ring 6. A groove 15 into which a claw is loosely fitted is provided on an outer periphery of the seal ring 5. A width of the groove 15 is smaller than a distance between the portion 10a and the 10b in the circumferential direction. WMR/WSR is set within a range of 0.75
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公开(公告)号：US10280977B2
公开(公告)日：2019-05-07
申请号：US15566169
申请日：2016-04-07
Applicant: EAGLE INDUSTRY CO., LTD. , NOK CORPORATION
Inventor： Masatoshi Itadani , Kazumasa Sunagawa , Tetsuzo Okada , Keiichi Chiba , Kenji Kiryu , Akiko Koga
Abstract: In an embodiment, a slide component includes a circular ring-shaped stationary-side seal ring 5 fixed to a stationary side and a circular ring-shaped rotating-side seal ring 3 rotating with a rotating shaft 1, and relatively rotates respective opposed sliding faces S of the stationary-side seal ring 5 and the rotating-side seal ring 3, thereby sealing a sealed fluid present on one side in a radial direction of the sliding face relatively rotating and sliding, wherein the sealed fluid is a silicate containing fluid; and on at least either one sliding face of the stationary-side seal ring 5 and the rotating-side seal ring 3, an amorphous carbon film 10 formed by using hydrocarbon gas not containing organosilicon compound gas in a plasma CVD method is laminated. The slide component can seal a silicate containing sealed fluid to which silicate is added.
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公开(公告)号：US09611938B1
公开(公告)日：2017-04-04
申请号：US15400376
申请日：2017-01-06
Applicant: EAGLE INDUSTRY CO., LTD.
Inventor： Masatoshi Itadani , Yuichiro Tokunaga , Kazumasa Sunagawa , Hikaru Katori
CPC classification number: F16J15/3412 , F16J15/348
Abstract: 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.
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