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公开(公告)号：US20240044325A1
公开(公告)日：2024-02-08
申请号：US18266922
申请日：2021-09-22
CPC分类号： F04B45/022 , F04B49/08 , F04B53/1095 , F04B53/1032
摘要： A control unit 6 of a bellows pump device 1 determines whether or not a second bellows 14 (first bellows 13) is in a predetermined expanded state when the first bellows 13 (second bellows 14) contracts to a mid-contraction state, on the basis of respective detection signals of a first detection unit 29 and a second detection unit 31, and when a determination result of the determination is negative, the control unit 6 performs next pressure increase control of controlling a second electropneumatic regulator 52 (first electropneumatic regulator 51) such that an air pressure of a pressurized air to be supplied to a second suction-side air chamber 26B (first suction-side air chamber 26A) of a second driving unit 28 (first driving unit 27) at next expansion of the second bellows 14 (first bellows 13) is increased.
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公开(公告)号：US20170159854A1
公开(公告)日：2017-06-08
申请号：US15323657
申请日：2015-09-17
发明人： Makoto FUJII , Masaki MIYAMOTO , Toshihide IIDA , Tomoyuki KOIKE , Atsushi NAKANO , Daisuke URATA
CPC分类号： F16L19/0212 , F16L33/223 , F16L47/04
摘要： A resin-made pipe joint enhancing sealing property between a joint body and a sleeve. The joint body and the sleeve are produced by using a fluorine resin. A sealing portion which seals between the inner circumferential surface of an inserting portion of the sleeve and the outer circumferential surface of the inner cylinder portion is formed by press-inserting the inserting portion into a groove portion of the joint body. When, with respect to the inserting and groove portions, an insertion rate of the inserting portion to the groove portion is indicated by X, and a multiplying factor of the radial width of the inserting portion to the radial width of the groove portion is indicated by Y, the resin-made pipe joint has the insertion rate and multiplying factor which are within a range defined by following Expressions (1) and (2): Y=−0.218X+1.218 (1) and Y=−0.67X+1.67. (2)
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公开(公告)号：US20170218946A1
公开(公告)日：2017-08-03
申请号：US15500716
申请日：2015-07-06
CPC分类号： F04B49/06 , F04B11/0058 , F04B43/026 , F04B43/08 , F04B43/10 , F04B43/1136 , F04B45/022 , F04B45/0733 , F04B49/065 , F04B53/10 , F04B53/16 , F04B2201/0201
摘要： A bellows pump device includes first and second bellows mounted on a pump head so as to be expandable/contractible independently of each other and configured to suck a fluid from a suction passage thereinto by expansion thereof and discharge the fluid therefrom to a discharge passage by contraction thereof. First and second air cylinder portions are configured to respectively cause the first and second bellows to perform expansion/contraction operation. First and second detection devices are configured to detect expanded/contracted states of the first and second bellows, respectively. A control unit is configured to control drive of the first and second air cylinder portions on the basis of each of detection signals of the first and second detection devices such that, before one bellows comes into a most contracted state, the other bellows is caused to contract from a most expanded state.
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公开(公告)号：US20190154532A1
公开(公告)日：2019-05-23
申请号：US16314710
申请日：2017-05-01
发明人： Kazukiyo TESHIMA , Daisuke URATA , Naoto YAMADA , Takuya MURAKAMI
摘要： A reciprocating pump includes: a housing with a fluid channel that includes a pump chamber; a reciprocated member that is disposed in the housing to form the pump chamber, and reciprocable for suction and discharge of fluid; an actuator configured to reciprocate the reciprocated member; and a pressure gauge with a pressure receiving portion, configured to detect pressure of the fluid in the fluid channel via the pressure receiving portion. The housing includes an inner wall facing the fluid channel, and a flexible, membranous portion placed continuously next to the inner wall to face the fluid channel. The pressure gauge is attached to the housing such that the membranous portion is sandwiched between the pressure receiving portion and the fluid channel.
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公开(公告)号：US20170146161A1
公开(公告)日：2017-05-25
申请号：US15323603
申请日：2015-09-17
发明人： Makoto FUJII , Masaki MIYAMOTO , Toshihide IIDA , Tomoyuki KOIKE , Atsushi NAKANO , Daisuke URATA
CPC分类号： F16L19/02 , F16L33/22 , F16L33/223 , F16L47/04
摘要： A resin-made pipe joint with enhanced sealing property between a joint body and sleeve. A sealing portion which seals between an inner circumferential surface of an inserting portion of a sleeve and an outer circumferential surface of an inner cylinder portion is formed by press-inserting an inserting portion into a groove portion of the joint body. When the inserting portion is press-inserted into the groove portion, a space is formed between a body cylinder portion located opposite to an opening portion of the groove portion in the axial direction, and the projection end of the inserting portion. After completing press insertion of the inserting portion into the groove portion, in a section including axis of the inner cylinder portion, a region in the outer circumferential surface of the inner cylinder portion facing the space forms an angle of 5° to 15° to the axis of the inner cylinder portion.
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公开(公告)号：US20210123429A1
公开(公告)日：2021-04-29
申请号：US16963138
申请日：2018-11-06
发明人： Kazukiyo TESHIMA , Daisuke URATA
IPC分类号： F04B43/067 , F04B53/14
摘要： A rolling diaphragm pump that can inhibit an increase in cost with a simple configuration is provided. A rolling diaphragm pump 1 includes: a housing 2; a piston 3 disposed so as to be slidable relative to an inner peripheral surface of the housing 2 and reciprocatable in an axial direction; a rolling diaphragm 4 having a movable portion 41 disposed at one end portion in the axial direction of the piston 3 and reciprocatable together with the piston 3, a fixed portion 42 fixed to the housing 2, and a flexible connecting portion 43 connecting the movable portion 41 and the fixed portion 42 to each other; a pump chamber 5 defined by the rolling diaphragm 4 at one side in the axial direction within the housing 2 and into and from which a transport fluid is sucked and discharged by changing a volume of an interior of the pump chamber 5 by deformation of the connecting portion 43 due to reciprocation of the piston 3; and a working fluid chamber 6 defined by another end portion in the axial direction of the piston 3 at another side in the axial direction within the housing 2 and into and from which a working fluid is supplied and discharged, thereby causing the piston 3 to reciprocate.
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公开(公告)号：US20190178241A1
公开(公告)日：2019-06-13
申请号：US16322587
申请日：2017-06-15
发明人： Kazukiyo TESHIMA , Daisuke URATA , Naoto YAMADA , Takuya MURAKAMI
CPC分类号： F04B43/02 , F04B43/04 , F04B43/08 , F04B43/09 , F04B49/06 , F04B49/08 , F04B2205/03 , F04B2207/042 , F05B2210/11 , F05B2270/301
摘要： A reciprocating pump includes: a housing with a suction port and a discharge port; a reciprocated member disposed in the housing to form a pump chamber and reciprocable such that fluid is sucked into the pump chamber through the suction port and then discharged from the pump chamber through the discharge port; an actuator configured to reciprocate the reciprocated member; and a pressure gauge with a pressure receiving portion, configured to detect pressure of the fluid in the pump chamber through the pressure receiving portion, and coupled to the reciprocated member to be reciprocated by the actuator integrally with the reciprocated member.
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