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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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公开(公告)号：US20210003221A1
公开(公告)日：2021-01-07
申请号：US16976018
申请日：2019-03-13
IPC分类号： F16J15/34
摘要： A mechanical seal capable of preventing charge accumulation on a rotary shaft includes a fixed sealing element which is held at an inner periphery of housing members of machines to be installed and has at least a fixed seal ring, and a rotating sealing element which is held at an outer periphery of a rotary shaft rotatably supported in the housing members and has at least a rotating seal ring. A conductive element is provided between the fixed sealing element 10 and the rotary shaft or a rotary shaft member fixed to the rotary shaft.
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公开(公告)号：US20210156478A1
公开(公告)日：2021-05-27
申请号：US16967399
申请日：2019-02-19
IPC分类号： F16J15/34
摘要： The purpose of the present invention is to provide a mechanical seal whose axial dimension can be reduced without impairing sealing performance. In a mechanical seal including a rotating-side sealing ring 11; a stationary-side sealing ring 21 provided within a case 22 and sliding on the rotating-side sealing ring 11; a biasing member 24 for biasing the stationary-side sealing ring 21 to the rotating-side sealing ring 11; and an engagement means 25 for restricting the rotational relative movement between the case 22 and the stationary-side sealing ring 21, the biasing member 24 is arranged radially outside the stationary-side sealing ring 21.
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公开(公告)号：US20210048107A1
公开(公告)日：2021-02-18
申请号：US16963483
申请日：2019-01-24
发明人： Tadahiro KIMURA , Tetsuzo OKADA
IPC分类号： F16J15/34
摘要： A sealing apparatus includes a rotating shaft to seal a first space where a fluid flows and a second space accommodating a device that is vulnerable to the fluid. A main seal partially defines the first space to restrict the fluid from leaking from the first space and includes a rotating seal ring provided on the rotating shaft, a stationary seal ring firmly provided in the equipment, and biasing member 18 configured to bias the rotating seal ring and the stationary seal ring in a facing direction; and an auxiliary seal that partially defines the second space to prevent the fluid from infiltrating into the second space and is in sliding contact with the rotating shaft of a member connected to the rotating shaft at a position which is different from a position of the main seal.
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公开(公告)号：US20200278029A1
公开(公告)日：2020-09-03
申请号：US16647838
申请日：2018-09-19
发明人： Tadahiro KIMURA , Hikaru KATORI , Masatoshi ITADANI , Takeshi HOSOE , Yasuhiro IKEDA , Tomoko YAMAKI
IPC分类号： F16J15/34
摘要： The purpose of the present invention is to provide a mechanical seal in which a stationary-side sealing ring can follow the movement of a rotating-side sealing ring to provide reliable sealing properties and by which the entire device can be made compact.A mechanical seal in which a rotating-side sealing ring 13 attached to a shaft 2 and a stationary-side sealing ring 21 attached to a housing 3 slide relative to each other and seal between the housing 3 and the shaft 2 includes a case 22 which is attached to the housing 3 and which contains the stationary-side sealing ring 21, and a seal member 23 which is disposed between the case 22 and the stationary-side sealing ring 21, and the case 22 includes a holding part 22d which regulates the seal member 23 from moving to both sides in the axial direction thereof.
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公开(公告)号：US20190203840A1
公开(公告)日：2019-07-04
申请号：US16331377
申请日：2017-09-07
IPC分类号： F16J15/34
CPC分类号： F16J15/3404 , F04D29/122 , F05B2240/57 , F16J15/34 , F16J15/3452 , F16J15/3464
摘要： Two conflicting functions of sealing and lubrication of sliding faces are achieved for a long time. The sliding face of a rotating-side seal ring 3 is provided with dynamic pressure generation grooves 11 configured to communicate with the circumferential edge on the inner peripheral side of the sliding face and not to communicate with the circumferential edge on the outer peripheral side. A spring 7 is provided on the back side of a stationary-side seal ring 6 for pressing the stationary-side seal ring 6 against the sliding face of the rotating-side seal ring 3. A spring holder 8 is provided between the back side of the stationary-side seal ring 6 and the spring 7.
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