公开(公告)号：US11774412B2

公开(公告)日：2023-10-03

申请号：US16471637

申请日：2016-12-22

申请人： SHIMADZU CORPORATION

发明人： Hiroki Honda ,  Kengo Aoki ,  Haruhisa Kato

IPC分类号： G01N30/00 ,  B03B5/28 ,  B04B5/04 ,  B04B9/14

CPC分类号： G01N30/0005 ,  B03B5/28 ,  B04B5/0442 ,  B04B9/14 ,  B04B2005/045 ,  G01N2030/002

摘要： A centrifugal separation type FFF device where a rotor can be rotated at a high speed safely so that particles of a smaller size in a sample liquid can be classified. A field flow fractionation device is provided with: a channel that is attached to the inner circumferential surface of the peripheral portion of a rotor and where a classification flow path is created; flow paths for feeding a sample liquid into and out from the classification flow path; and a rotational drive mechanism for rotating the rotational axis, wherein a channel installation portion is formed on one side of the peripheral portion, and a mass balancer portion for adjusting the mass distribution of the rotor is formed on the other side with the rotor base in between.

公开(公告)号：US11253873B2

公开(公告)日：2022-02-22

申请号：US16471668

申请日：2017-12-18

申请人： SHIMADZU CORPORATION

发明人： Kengo Aoki ,  Hiroki Honda ,  Haruhisa Kato

IPC分类号： B04B7/00 ,  B03B5/32 ,  B04B5/00 ,  B04B11/02 ,  B04B15/02 ,  G01N15/02

摘要： A centrifugal field-flow fractionation device capable of improving analysis performance and shortening analysis time is provided. A first channel 111 communicating with a channel member is formed on a rotational shaft 11 that rotates together with a rotor. A second channel 644 communicating with the first channel 111 is formed on a fixing portion 60 fixed in a state of facing the rotational shaft 11 along a rotational axis L. A mechanical seal 66 having a pair of seal rings 661 and 662 that come into contact with each other and a biasing member 663 is provided to attach one seal ring 661 to the rotational shaft 11 and the other seal ring 662 to the fixing portion 60. The biasing member 663 biases the pair of seal rings 661 and 662 in a direction in which the pair of seal rings come in contact with each other. Since the rotational shaft 11 can be rotated at a high speed and the liquid sample can be fed at a high pressure, the analysis performance can be improved and the analysis time can be shortened.

公开(公告)号：US11192120B2

公开(公告)日：2021-12-07

申请号：US16472374

申请日：2017-12-18

申请人： SHIMADZU CORPORATION

发明人： Kengo Aoki ,  Hiroki Honda

IPC分类号： B04B1/02 ,  B03B5/34 ,  B04B11/02 ,  B04B13/00 ,  G01N1/10 ,  G01N15/04

摘要： Provided is a centrifugal field-flow fractionation device that can stably press a fixing member toward an inner peripheral surface of a rotor by a wedge-shaped member, even when a relatively large centrifugal force acts on the wedge-shaped member. An arc-shaped (C-shaped) fixing member 17 is provided along an inner peripheral surface of a channel member 16 on a side of a rotation axis of the channel member 16. A wedge-shaped member 18 is attached between opposite ends of the fixing member 17 and applies a force in a direction of spreading the opposite ends apart, to thereby press the fixing member 17 toward the inner peripheral surface of the rotor 14. The wedge-shaped member 18 has a pair of contact surfaces 184 that respectively come into contact with the opposite ends of the fixing member 17. The pair of contact surfaces 184 include tapered surfaces that gradually taper down toward the rotor 14, so that the distance between the contact surfaces 184 gradually shortens as the contact surfaces 184 come close to the rotor 14.

公开(公告)号：US11105423B2

公开(公告)日：2021-08-31

申请号：US16470305

申请日：2017-12-11

申请人： SHIMADZU CORPORATION ,  EAGLE INDUSTRY CO., LTD.

发明人： Kengo Aoki ,  Hiroki Honda ,  Hidekazu Takahashi

IPC分类号： F16J15/36

摘要： A mechanical sealing device according to an embodiment of the present invention includes: a sealing ring (13) attached to a protrusion (11a) protruding from a housing (11); a mating ring (23) attached to an end portion of a rotary shaft (21); a welded bellows provided around the protrusion (11a) and located between the housing (11) and the sealing ring (13). The welded bellows (15) presses the sealing ring (13) in an axial direction to cause the sealing ring (13) to be in contact with the mating ring (23), thereby ensuring high pressure force, and in particular, uniform pressure force along its entire circumference, so as to achieve high liquid tightness, while maintaining the sizes in axial and radial directions small. Furthermore, the welded bellows (15) works as a sealing member of blocking a liquid leaked out through the O-ring (14), thereby achieving assured liquid tightness. Accordingly, an outside-type mechanical sealing device can be provided which has a compact size, and is capable of ensuring high liquid tightness in response to a high rotation speed and a high liquid pressure.