公开(公告)号：US5769116A

公开(公告)日：1998-06-23

申请号：US682734

申请日：1996-09-13

申请人： Hiroshi Yokota ,  Shingo Yokota

发明人： Hiroshi Yokota ,  Shingo Yokota

IPC分类号： E03C1/10 ,  F16K1/20 ,  F16K15/03 ,  F16K15/18 ,  F16K47/00 ,  F16K47/02 ,  F16L55/055 ,  F16K21/10

CPC分类号： E03C1/104 ,  F16K1/2007 ,  F16K15/03 ,  F16K15/033 ,  F16K15/181 ,  F16K47/00 ,  F16K47/023 ,  F16L55/055 ,  Y10T137/785 ,  Y10T137/7898 ,  Y10T137/7901

摘要： The invention has its object to radically resolve an untapped technical issue in a non-water hammering check valve device, in which a valve disc, a valve seat and a surrounding flow passage are configured such that the valve disc is substantially seated on the valve seat at the time when input to a pump is shut off and a discharge flow in the flow passage loses inertia to stop, and to provide a reasonable non-water hammering check valve device of a simple and clear construction which suffers a small resistance loss of a valve at the time of a predetermined maximum flow rate, can readily accommodate an abrupt change in a flow state without delay in valve closing operation and provides a uniform and close seating on the valve seat at the time of valve seating to prevent water hammering. In the non-water hammering check valve device, a valve disc (4) is connected to an arm portion (5) through a valve disc support shaft (6) with a required freedom of swinging, and the arm portion (5) is connected to a valve body (1) through an arm support shaft (7). At the time of valve opening, the valve disc (4) is caused by an additional acting force, which turns the valve disc (4) about the valve disc support shaft (6), to be floatingly supported in the flow passage while an upstream end (4a) of the valve disc and an upstream end (5a) of the arm portion preferentially abut against each other all the time. At the time of valve closing, a downstream end (4b) of the valve disc preferentially abuts against a valve seat (3), and in a subsequent valve seating stroke, the entire surface of the valve disc (4) comes into uniform and close contact with the valve seat (3) to prevent water hammering caused by counterflow.

公开(公告)号：US5746246A

公开(公告)日：1998-05-05

申请号：US836795

申请日：1997-05-19

申请人： Hiroshi Yokota ,  Shingo Yokota

发明人： Hiroshi Yokota ,  Shingo Yokota

IPC分类号： F16K15/03 ,  F16K47/02 ,  F16K21/10

CPC分类号： F16K47/023 ,  F16K15/033 ,  Y10T137/785 ,  Y10T137/7898

摘要： A check valve for preventing water hammer in which a valve element is adapted for quick initiation of a valve closing motion without delay in response to an abrupt change in fluid flow resulting from stoppage of a pump, and which is seated on a valve seat when the inertial flow of the fluid in the discharge direction stops, without generating a water hammer and impulse noise. The valve element and the valve seat are constructed so that the valve element follows the motion of the flowing fluid and is interlocked with a braking device by a linear motion transmitting mechanism. The linear motion transmitting mechanism and the braking device are constructed to remove the effect of braking actions that decelerate the valve closing motion of the valve element and of frictional resistance in the period between when the valve element starts a valve closing motion and when the valve element is almost seated on the valve seat, and then to brake the valve element gently only until the valve element is seated on the valve seat. The timing of the seating of the valve element on the valve seat can be adjusted by a mechanism for adjusting the braking action starting position, by a bypass adjusting valve combined with the braking device or by a mechanism for adjusting biasing force applied to the valve element.

摘要翻译： PCT No.PCT / JP95 / 02463 Sec。 371日期：1997年5月16日 102（e）日期1997年5月16日PCT提交1995年12月1日PCT公布。 第WO96 / 18054号公报 日期1996年6月13日用于防止水锤的止回阀，其中阀元件适于快速启动阀关闭运动，以响应于泵的停止导致的流体流动的突然变化，并且其位于 当排出方向上的流体的惯性流动停止时，阀座不产生水锤和脉冲噪声。 阀元件和阀座被构造成使得阀元件遵循流动流体的运动，并且通过线性运动传递机构与制动装置互锁。 线性运动传递机构和制动装置被构造成消除在阀元件开始闭阀运动之间的时段和阀元件之间的时间段期间减小阀元件的阀关闭运动和摩擦阻力的制动动作的影响 几乎位于阀座​​上，然后轻轻地制动阀元件，直到阀元件就位于阀座上。 可以通过用于调节制动作用开始位置的机构，与制动装置结合的旁路调节阀或用于调节施加到阀元件的偏压力的机构来调节阀元件在阀座上的定位 。

公开(公告)号：US6135142A

公开(公告)日：2000-10-24

申请号：US194324

申请日：1998-11-24

申请人： Hiroshi Yokota ,  Shingo Yokota

发明人： Hiroshi Yokota ,  Shingo Yokota

IPC分类号： F16K31/122 ,  F16K31/12 ,  F16K31/124 ,  G05D7/00

CPC分类号： F16K31/124 ,  F16K31/12 ,  Y10T137/7759 ,  Y10T137/7769

摘要： An automatic-control valve device has a main valve unit, and a pilot valve unit for controlling the main valve unit. The pilot valve unit has a pilot valve A which closes when pressure in a downstream passage on the downstream side of the main valve unit increases beyond a predetermined value, a pilot valve B which opens when pressure in the downstream passage increases beyond the predetermined value. The pilot valve A and the pilot valve B are connected in series by passages through a main valve driving pressure chamber in a section between an upstream passage on the upstream side of the main valve unit and the downstream passage, and cooperate to maintain the pressure in the downstream passage at the predetermined valve. A pilot valve C which closes when the pressure difference across an orifice disposed in a passage extending through the main valve unit is greater than a predetermined value is connected in series to a passage extending across the pilot valve A to limit the flow rate of a fluid in the downstream passage to a predetermined value. The respective valve elements of the pilot valve A and the pilot valve B may be held on a single valve stem. The orifice may be of a variable type. The automatic-control valve device may be provided with a valve means placed in a passage extending across the pilot valve A to open and close the passage according to the variation of a liquid level on the downstream side, and a valve means placed in a passage extending across the pilot valve A to close the passage upon the detection of an abnormal condition by an abnormal condition detecting means.

摘要翻译： PCT No.PCT / JP97 / 00042 Sec。 371日期：1998年11月24日 102（e）日期1998年11月24日PCT 1997年1月6日PCT PCT。 公开号WO97 / 45665 PCT 日期1997年12月4日自动控制阀装置具有主阀单元和用于控制主阀单元的先导阀单元。 先导阀单元具有先导阀A，其在主阀单元下游侧的下游通路中的压力增加超过预定值时闭合;当下游通道中的压力增加超过预定值时打开的先导阀B。 先导阀A和先导阀B通过主阀驱动压力室在主阀单元的上游侧的上游通路与下游通路之间的区段中串联连接，并配合以保持压力 在预定阀处的下游通道。 当设置在延伸穿过主阀单元的通道中的孔之间的压力差大于预定值时闭合的先导阀C与延伸穿过先导阀A的通道串联连接以限制流体的流速 在下游通道中达到预定值。 先导阀A和先导阀B的各个阀元件可以保持在单个阀杆上。 孔可以是可变类型。 自动控制阀装置可以设置有阀装置，该阀装置设置在延伸穿过先导阀A的通道中，以根据下游侧的液面的变化来打开和关闭通道;以及阀装置， 延伸穿过导阀A，以在通过异常状态检测装置检测到异常状态时关闭通道。

公开(公告)号：US6102072A

公开(公告)日：2000-08-15

申请号：US155725

申请日：1998-10-05

申请人： Hiroshi Yokota ,  Shingo Yokota

发明人： Hiroshi Yokota ,  Shingo Yokota

IPC分类号： F16K15/03 ,  F16K15/18 ,  F16K17/04 ,  F16K47/02

CPC分类号： F16K47/023 ,  F16K15/03 ,  F16K15/186 ,  F16K17/048 ,  Y10T137/7842 ,  Y10T137/7853 ,  Y10T137/7903 ,  Y10T137/87265

摘要： The present invention is intended to provide an economically advantageous, high-performance water hammer preventing check valve capable of preventing both water hammer and pressure rise under any pipeline conditions when feed of a fluid is stopped and of easily designed and manufactured. The invention provides a water hammer preventing check valve which opens when a fluid is fed forward and closes when the feed of the fluid is stopped to prevent the fluid from reversing. The check valve has a main valve unit and a bypass valve unit disposed in parallel, wherein the main valve unit has a single main valve element capable of opening and closing an opening defined by an inclined main valve seat disposed between an inlet passage and an outlet passage, constantly biased in a valve closing direction, formed in a shape subject to a low form drag and providing a small inertial resistance, and capable of being substantially completely seated on the main valve seat at the moment the velocity of the inertial flow of the fluid in a discharge direction decreases to naught after the supply of the fluid has been stopped; and the bypass valve unit has a bypass valve element capable of linearly moving in opposite directions to open and close an opening defined by a bypass valve seat disposed between the inlet passage and the outlet passage, and linked to a damping device for damping the linear movement of the bypass valve element so that the bypass valve element may gradually close the opening defined by the bypass valve seat after the start of the reverse flow of the fluid.The bypass valve unit may be provided with an opening adjusting mechanism for adjusting the opening of the bypass valve element. The main valve unit may be provided with a valve closing force adjusting mechanism for applying a valve closing force to the main valve element.

公开(公告)号：US06263905B1

公开(公告)日：2001-07-24

申请号：US09284057

申请日：1999-04-06

申请人： Hiroshi Yokota ,  Shingo Yokota

发明人： Hiroshi Yokota ,  Shingo Yokota

IPC分类号： F16K3134

CPC分类号： G05D9/04 ,  F16K31/363 ,  G05D7/03 ,  G05D16/166 ,  Y10T137/7371 ,  Y10T137/7404 ,  Y10T137/7769 ,  Y10T137/7788

摘要： An automatic regulating valve apparatus comprises a main valve unit, and a pilot valve unit operatively connected to the main valve unit to control the main valve unit. The main valve unit comprises a main valve casing, a main valve element disposed in the main valve casing, and a main valve driving member disposed in the main valve casing together with the main valve element and having a pressure receiving area greater than that of the main valve element, the main valve element is disposed on the upstream side of a valve seat so as to form a restricting passage between the main valve element and the main valve seat, and the main valve driving member is disposed for sliding movement in a space defined by a cylindrical wall formed in the main valve casing so as to define a main valve driving pressure chamber together with the cylindrical wall. The pilot valve unit comprises pilot valves A and B which are operated for opening and closing operations according to the variation of a pressure difference across an orifice included in the main valve unit, a pressure difference across the main valve unit, liquid level on the downstream side of the main valve unit or the pressure on the upstream side of the main valve unit. The pilot valve A and the pilot valve B are arranged in series and connected between the upstream and the downstream side of the main valve unit by connecting passages with a chamber between the pilot valves A and B connected to the main valve driving pressure chamber. The pressure in the main valve driving pressure chamber is varied by the coordinated operations of the pilot valves A and B to regulate the opening of the main valve unit. Thus, the automatic regulating valve apparatus 4 exercises automatic control functions including a constant-flow control function, an emergency shutoff function, a liquid level control function and an upstream pressure control function.

摘要翻译： 一种自动调节阀装置，包括主阀单元和可操作地连接到主阀单元以控制主阀单元的先导阀单元。 主阀单元包括主阀壳体，设置在主阀壳体中的主阀元件和主阀驱动构件，主阀驱动构件与主阀元件一起设置在主阀壳体中，并且具有大于 主阀元件，主阀元件设置在阀座的上游侧，以在主阀元件和主阀座之间形成限制通道，主阀驱动构件设置成在空间中滑动 由形成在主阀壳体中的圆柱形壁限定，以便与圆柱形壁一起限定主阀驱动压力室。 先导阀单元包括先导阀A和B，其根据主阀单元中包括的孔口的压力差的变化，主阀单元两端的压差，下游的液位 主阀单元的侧面或主阀单元上游侧的压力。 先导阀A和先导阀B通过与连接到主阀驱动压力室的先导阀A和B之间的腔室连接通道而串联布置并连接在主阀单元的上游和下游侧之间。 主阀驱动压力室中的压力通过先导阀A和B的协调操作而变化，以调节主阀单元的打开。 因此，自动调节阀装置4执行自动控制功能，包括恒流控制功能，紧急关闭功能，液位控制功能和上游压力控制功能。

公开(公告)号：US6152689A

公开(公告)日：2000-11-28

申请号：US230251

申请日：1999-01-22

申请人： Hiroshi Yokota ,  Shingo Yokota

发明人： Hiroshi Yokota ,  Shingo Yokota

IPC分类号： F04D5/00 ,  F04D7/04 ,  F04D9/04 ,  F04D15/00 ,  F04D17/08

CPC分类号： F04D7/045 ,  F04D15/0005 ,  F04D9/04 ,  F04D9/041 ,  F05B2210/132

摘要： The invention provides a self-priming centrifugal pump capable of sucking up and pumping a highly viscous liquid containing muddy substances including a large amount of bubbles, and solid foreign matters, of preventing the flow of the liquid from the side of a main pump unit into a vacuum device and from the vacuum device into the main pump unit at all stages of operation including starting, operating and stopping stages and of perfectly automatic operation, and very economical in costs of equipment and maintenance.The self-priming centrifugal pump has a main pump unit for pumping a liquid, an auxiliary pump unit for centrifugal gas-liquid separation, and an exhaust vacuum device. A region in the vicinity of a central part of an impeller included in the main pump unit is connected via a passage having a small passage area as compared with the discharge ability of the auxiliary pump unit to the suction opening of the auxiliary pump unit, the discharge opening of the auxiliary pump unit is connected to the suction opening of the main pump unit by a return passage, and a region in the vicinity of a central part of the impeller of the auxiliary pump unit is connected via an exhaust passage to the vacuum device. The exhaust passage includes in series therein a slow-acting valve which opens with a delay after the connection of a prime mover for driving the self-priming centrifugal pump to a power source, and a quick-acting valve which closes immediately after the disconnection of the prime mover from the power source.

摘要翻译： PCT No.PCT / JP97 / 00857 Sec。 371日期1999年1月22日 102（e）日期1999年1月22日PCT 1997年3月17日PCT公布。 出版物WO98 / 04833 日期1998年2月5日本发明提供一种自吸式离心泵，其能够吸收和泵送含有大量气泡的混浊物质和固体异物的高粘性液体，以防止液体从侧面流出 主泵单元进入真空装置，并从真空装置进入主泵装置，包括启动，运行和停止阶段以及完全自动运行的各个阶段，并且设备和维护成本非常经济。 自吸离心泵具有用于泵送液体的主泵单元，用于离心气液分离的辅助泵单元和排气真空装置。 包括在主泵单元中的叶轮的中心部分附近的区域通过与辅助泵单元对辅助泵单元的吸入口的排出能力相比具有小通道面积的通道连接， 辅助泵单元的排出口通过返回通路与主泵单元的吸入口连接，辅助泵单元的叶轮的中央部附近的区域经由排气通路与真空连接 设备。 排气通道串联地包括缓慢作用的阀，其在用于将自吸离心泵驱动到动力源的原动机连接之后延迟地打开;以及快速阀，其在断开后立即关闭 来自电源的原动机。

公开(公告)号：US5735308A

公开(公告)日：1998-04-07

申请号：US582998

申请日：1996-01-23

申请人： Hiroshi Yokota ,  Shingo Yokota

发明人： Hiroshi Yokota ,  Shingo Yokota

IPC分类号： F16K1/52 ,  F16K31/12 ,  F16K51/00 ,  G05D16/06 ,  G05D16/16 ,  F16K17/22

CPC分类号： G05D16/16 ,  G05D16/0655 ,  Y10T137/7762 ,  Y10T137/7768 ,  Y10T137/777

摘要： The present invention relates to an automatic constant-pressure lift valve provided with a pilot valve unit having an A valve unit and a B valve unit, and an external control force applying means that can be simply adjusted to set a predetermined valve-outlet pressure. A main valve unit is constructed so that an abnormal rise in the valve-outlet pressure can be avoided at start and stop and continuous operation of a pumping or conveying pump facility. The automatic constant-pressure lift valve has a construction capable of easily maintaining watertightness when the line is shut off. The pilot valve unit is not provided with any fixed flow restriction regulating passage, such as a needle valve. When the main valve unit, and the A valve unit and the B valve unit of the pilot valve unit are clogged, those valves open automatically for automatic cleaning. This constant-pressure lift valve has an excellent industrial effect.

摘要翻译： PCT No.PCT / JP94 / 01432 Sec。 371日期1996年1月23日 102（e）日期1996年1月23日PCT 1994年8月31日PCT PCT。 公开号WO95 / 06834 日期：1995年3月9日本发明涉及一种具有A阀单元和B阀单元的先导阀单元的自动恒压提升阀以及外部控制力施加单元， 阀出口压力。 主阀单元被构造成使得在泵送或输送泵设备的启动和停止以及连续操作时可以避免阀出口压力的异常升高。 自动恒压提升阀具有能够在线路被切断时容易地保持水密性的结构。 先导阀单元没有设置有诸如针阀的任何固定流量限制调节通道。 当主阀单元，A阀单元和先导阀单元的B阀单元堵塞时，这些阀自动打开以进行自动清洗。 该恒压提升阀具有出色的工业效果。

公开(公告)号：US06629821B1

公开(公告)日：2003-10-07

申请号：US10030063

申请日：2002-01-04

申请人： Hiroshi Yokota ,  Shingo Yokota ,  Tetsuya Tanimoto

发明人： Hiroshi Yokota ,  Shingo Yokota ,  Tetsuya Tanimoto

IPC分类号： F04B2308

CPC分类号： F04D9/04 ,  F04D9/003 ,  F04D9/02

摘要： The present invention provides a multipurpose pump apparatus of high achievement, which can continuously pump and convey liquid even containing a large amount of foams and can make high level defoaming function and degassing function, and pumped liquid sterilizing function, etc. The pump apparatus comprises a gas-liquid separating impeller disposed in a pumped liquid path of a primary pump for pumping liquid, a cavity receiver which receives the tail bottom of a tornado-shaped cavity produced by the rotation of the gas-liquid separating impeller to prevent the tornado-shaped cavity from extending, and vacuum means connected to a part in a vicinity of the center of the tornado-shaped cavity through a degassing path.

摘要翻译： 本发明提供了一种高成本的多用途泵装置，其能够连续地泵送并输送甚至含有大量泡沫的液体，并且可以提供高水平的消泡功能和脱气功能，以及泵送的液体灭菌功能等。泵装置包括 设置在用于泵送液体的主泵的泵送液体路径中的气液分离叶轮，容纳由气液分离叶轮的旋转产生的龙卷风腔的尾部底部的空腔接收器，以防止龙卷风 并且通过脱气路径连接到龙卷风腔的中心附近的部分的真空装置。

公开(公告)号：US5772394A

公开(公告)日：1998-06-30

申请号：US632408

申请日：1997-02-05

申请人： Hiroshi Yokota ,  Shingo Yokota

发明人： Hiroshi Yokota ,  Shingo Yokota

IPC分类号： F04D9/02 ,  F04D29/66

CPC分类号： F04D9/02

摘要： The present invention is intended to provide a self-priming centrifugal pump with an excellent self-priming and pumping performance without destroying the nearly complete morphology of the volute type centrifugal pump. The principle of self-priming action that circulates self-priming water by the characteristics of a larger volute and a smaller volute formed around the periphery of an impeller to drive out an air-water mixture produced by vortices generated by the impeller is elucidated in the description of "Double Volute Centrifugal Pump" proposed in JP-B No. 28-3039. Efforts have been concentrated on locally supporting the bottom of a tornado-like cavity formed by a whirling current of self-priming water for centrifugally separating air from self-priming water and secondary technical problems accompanying such efforts could not have been solved. The present invention forms a spiral guide passage (F) in an upper part of a self-priming water separating chamber (e) to lower the rising head of a whirling current of self-priming water, forms a curved passage (d) on the bottom (E) of the self-priming water separating chamber (e) so as to direct most part of self-priming water in the outer portion of the whirling current into a larger volute (v2) or forms a spiral guide passage (G) on the lower cylindrical surface of the self-priming water separating chamber (e) so as to direct most part of self-priming water in the outer portion of the whirling current into the larger volute (v2) to solve technical problems in the prior art and to provide a self-priming centrifugal pump capable of supplying water in a straight current to the following process.

摘要翻译： PCT No.PCT / JP94 / 01824 Sec。 371日期1997年2月5日 102（e）日期1997年2月5日PCT 1994年10月28日PCT PCT。 出版物WO95 / 12760 PCT 日期1995年5月11日本发明旨在提供一种具有优异的自吸和泵送性能的自吸式离心泵，而不破坏蜗壳式离心泵的几乎完整的形态。 通过由叶轮周围形成的较大蜗壳和较小涡卷的特性使自吸水循环以驱出由叶轮产生的涡流产生的空气 - 水混合物的自吸动作原理被阐明在 JP-B No.28-3039中提出的“双涡旋离心泵”的描述。 集中力量在当地支持由自吸水旋转电流形成的龙卷风腔的底部，用于离心分离空气与自吸水，并且伴随此类努力的次要技术问题无法解决。 本发明在自吸水分离室（e）的上部形成螺旋引导通道（F），以降低自吸水的旋转电流的上升头，在自吸水分离室的上部形成弯曲通道（d） 自吸水分离室（e）的底部（E），以将旋转电流的外部部分的大部分自吸水引导到更大的蜗壳（v2）中或形成螺旋导向通道（G） 在自吸水分离室（e）的下圆柱形表面上，以便将旋转电流外部的大部分自吸水引导到较大的蜗壳（v2）中以解决现有技术中的技术问题 并且提供能够以直流供给水的自吸离心泵进行以下处理。

公开(公告)号：US5642752A

公开(公告)日：1997-07-01

申请号：US578648

申请日：1996-01-16

申请人： Hiroshi Yokota ,  Shingo Yokota ,  Kunio Ogura

发明人： Hiroshi Yokota ,  Shingo Yokota ,  Kunio Ogura

IPC分类号： G05D7/01 ,  F16K17/30

CPC分类号： G05D7/0106 ,  Y10T137/7371 ,  Y10T137/7787 ,  Y10T137/7788

摘要： The present invention relates to a controllable constant flow regulating lift valve of a direct-acting automat ic control type that operates on an operating force derived from the condition of a working fluid, such as valve-inlet pressure prevailing in the inlet passage, valve-outlet pressure prevailing in the outlet passage, variation of liquid level on the side of the outlet and so on. The flow regulating valve comprises a flow regulating valve structure and a slide valve structure for automatic flow restriction control. In the controllable constant flow regulating lift valve, axial thrust acting on the spindle of a lift valve type flow regulating valve structure is balanced such that the constant flow regulating lift valve can be operated for constant flow regulation by a very small power. When the flow regulating valve structure and/or the slide valve structure are clogged with soil, sand and dirt, the internal pressure changes to open the clogged valve for automatic cleaning operation so that the soil, sand and dirt are washed away. This constant flow regulating lift valve is suitably applicable to a variety of industrial fields.

摘要翻译： PCT No.PCT / JP94 / 01372 Sec。 371日期1996年1月16日 102（e）日期1996年1月16日PCT 1994年8月19日PCT PCT。 出版物WO95 / 06214 日期1995年3月2日本发明涉及一种直动式自动控制型的可控恒定流量调节提升阀，其操作于从工作流体的状态导出的操作力，例如阀门入口压力 入口通道，出口通道中出现的阀出口压力，出口侧的液位变化等。 流量调节阀包括流量调节阀结构和用于自动流量限制控制的滑阀结构。 在可控恒流调节提升阀中，作用在提升阀式流量调节阀结构的主轴上的轴向推力平衡，使得恒流量调节提升阀可以通过非常小的功率进行恒定流量调节。 当流量调节阀结构和/或滑阀结构被土壤，沙子和污物堵塞时，内部压力变化，打开堵塞的阀门进行自动清洁操作，以使土壤，沙子和污物被冲走。 该恒定流量调节提升阀适用于各种工业领域。