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公开(公告)号：US20180106378A1
公开(公告)日：2018-04-19
申请号：US15505580
申请日：2015-08-26
发明人： Masatoshi ITADANI , Kazumasa SUNAGAWA , Keiichi CHIBA , Kenji KIRYU , Akira YOSHINO , Takashi SHINOMIYA
IPC分类号： F16J15/34
CPC分类号： F16J15/348 , F04D29/043 , F04D29/12 , F04D29/126 , F16J15/34 , F16J15/36 , F16J15/38
摘要： In an embodiment, a rotating-side seal ring 5 is formed in a substantially pentagonal shape in cross section having a cut portion 5a at which a corner portion on the inside-diameter side and the side opposite to a sealing face is cut in a tapered shape. A cup gasket 7 is fitted over the inside-diameter side and the back-surface side, and is formed in a substantially L shape in cross section including an axial portion 7a in contact with the inside-diameter side and an inner cylindrical portion of the sleeve 2 and a radial portion 7b in contact with the back-surface side and a radial portion of the sleeve 2, and has a corner portion 7c facing the cut portion 5a formed in a shape along it. The thickness of the corner portion 7c is set larger than a gap between the inside-diameter side and the inner cylindrical portion.
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公开(公告)号：US20180187784A1
公开(公告)日：2018-07-05
申请号：US15739973
申请日：2016-06-23
发明人： Masatoshi ITADANI , Kazumasa SUNAGAWA , Yuichiro TOKUNAGA , Hideyuki INOUE , Takeshi HOSOE , Ryoma YAMAKAWA , Yuta NEGISHI , Kenji KIRYU , Keiichi CHIBA , Akira YOSHINO , Hiroshi KUBOTA
CPC分类号： F16J15/3416 , F04D29/122 , F05D2240/55 , F16C33/743 , F16C33/7843 , F16J15/162 , F16J15/3412 , F16J15/3464
摘要： 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：US20180135699A1
公开(公告)日：2018-05-17
申请号：US15573107
申请日：2016-05-13
发明人： Yuichiro TOKUNAGA , Hideyuki INOUE , Wataru KIMURA , Tetsuya IGUCHI , Keiichi CHIBA , Masatoshi ITADANI , Hikaru KATORI
IPC分类号： F16C33/80
CPC分类号： F16C33/80 , F16J15/3416 , F16J15/348
摘要： In an embodiment, a sliding face of at least one sliding part of the pair of sliding parts is provided, along its entire circumference, with a trap groove 10 for trapping leakage fluid, located on a leakage side and spaced from the leakage side by a land. A dust entry reduction means 12 for reducing entry of dust from the leakage side while allowing passage of fluid is formed between lands of the pair of sliding parts on the leakage side of the trap groove 10. At the sliding faces of the pair of sliding parts sliding relatively, entry of dust from the leakage side as well as liquid leakage to the leakage side are suppressed.
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公开(公告)号：US20180112711A1
公开(公告)日：2018-04-26
申请号：US15566169
申请日：2016-04-07
发明人： Masatoshi ITADANI , Kazumasa SUNAGAWA , Tetsuzo OKADA , Keiichi CHIBA , Kenji KIRYU , Akiko KOGA
CPC分类号： F16C33/043 , C23C16/26 , C23C16/27 , F16C17/04 , F16C33/24 , F16C33/74 , F16C2206/04 , F16J15/34 , F16J15/3496 , F16J15/36 , F16J15/363
摘要： 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：US20170234431A1
公开(公告)日：2017-08-17
申请号：US15504266
申请日：2015-09-03
发明人： Hikaru KATORI , Keiichi CHIBA , Masatoshi ITADANI
IPC分类号： F16J15/34
CPC分类号： F16J15/3412 , F16J15/34 , F16J15/3416 , F16J15/342
摘要： Provided is a mechanical seal includes a fluid introduction groove provided in a sealing face of a stationary sealing ring and having an opening portion which is opened to the sealed fluid and an end portion which is provided opposite to the opening portion. The end portion being located between respective sealing faces S, the fluid introduction groove introducing the sealed fluid from the opening portion to a clearance between the respective sealing faces S. The fluid introduction groove is provided to be inclined at an acute angle to the sealing face S of the stationary sealing ring in a direction from the end portion to the opening portion.
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公开(公告)号：US20180195618A1
公开(公告)日：2018-07-12
申请号：US15741203
申请日：2016-06-28
IPC分类号： F16J15/34
CPC分类号： F16J15/3416 , F16J15/34 , F16J15/342
摘要： In an embodiment, a pair of sliding components that slide relative to each other is included. One of the sliding components is a stationary-side seal ring 2, and the other sliding component is a rotating-side seal ring 3. The seal rings 2 and 3 have sliding faces S2 and S3 extending radially, respectively, for sealing sealed fluid against leakage. The sliding faces S2 and S3 are provided with a static pressure groove 22 communicating with a sealing gas supply passage, and pumping grooves 5 capable of controlling the radial flow of sealing gas to a flow from the low-pressure fluid side to the high-pressure fluid side by relative sliding of the sliding faces. By controlling the radial flow of sealing gas at the sliding face, the amount of flow of the sealing gas flowing to the low-pressure fluid side is reduced to improve sealing performance.
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公开(公告)号：US20180172162A1
公开(公告)日：2018-06-21
申请号：US15736201
申请日：2016-05-13
发明人： Yuichiro TOKUNAGA , Hideyuki INOUE , Wataru KIMURA , Tetsuya IGUCHI , Takeshi HOSOE , Hidetoshi KASAHARA , Takafumi OTA , Keiichi CHIBA , Masatoshi ITADANI , Hikaru KATORI
摘要： In an embodiment, in a slide component, dynamic pressure generation grooves 10 are provided on a sealing face of at least one of a pair of slide parts 4, 7 so as to be isolated with no communication from the sealed fluid side and the leakage side by land portions R of both the sealing faces, and a plurality of independently-formed minute recessed sections 11 is provided at positions on the sealing face IS between the dynamic pressure generation grooves 10 and the leakage side, the positions being separated in the radial direction from the dynamic pressure generation grooves. The slide component can make the sealing faces fluid-lubricant and low frictional and prevent leakage of a sealed fluid and incoming of dust to the sealing faces at the time of normal operation.
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公开(公告)号：US20180128378A1
公开(公告)日：2018-05-10
申请号：US15573118
申请日：2016-05-13
发明人： Yuichiro TOKUNAGA , Hideyuki INOUE , Wataru KIMURA , Tetsuya IGUCHI , Keiichi CHIBA , Masatoshi ITADANI , Hikaru KATORI
IPC分类号： F16J15/34
CPC分类号： F16J15/342 , F02B39/00 , F16J15/3412 , 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.
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公开(公告)号：US20180106374A1
公开(公告)日：2018-04-19
申请号：US15505571
申请日：2015-08-26
发明人： Masatoshi ITADANI , Kazumasa SUNAGAWA , Yuichiro TOKUNAGA , Hideyuki INOUE , Takeshi HOSOE , Ryoma YAMAKAWA , Yuta NEGISHI , Kenji KIRYU , Keiichi CHIBA , Akira YOSHINO , Hiroshi KUBOTA
CPC分类号： F16J15/342 , F04D29/128 , F16J15/34 , F16J15/3412 , F16J15/3448
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.
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公开(公告)号：US20200182356A1
公开(公告)日：2020-06-11
申请号：US16341413
申请日：2017-09-29
发明人： Masatoshi ITADANI , Kazumasa SUNAGAWA , Tetsuzo OKADA , Keiichi CHIBA , Kenji KIRYU , Tadahiro KIMURA , Akiko KOGA
IPC分类号： F16J15/3284 , F16J15/00
摘要： In an exemplary embodiment, a sliding component includes an annular stationary side seal ring 5 fixed to the stationary side and an annular rotating side seal ring 3 to be rotated together with a rotating shaft, in which by relatively rotating opposing sealing faces S of the stationary side seal ring 5 and the rotating side seal ring 3, a silicate-containing sealed fluid present on one side in the radial direction of the relatively rotating sealing faces S is sealed, wherein an amorphous carbon film 8 formed by using a hydrocarbon gas containing no silicon compound is provided on at least any one of the sealing faces S of the stationary side seal ring 5 and the rotating side seal ring 3, and content of silicon of the amorphous carbon film 8 is 1.5 at % or less.
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