公开(公告)号：US07950911B2

公开(公告)日：2011-05-31

申请号：US12087159

申请日：2006-12-26

申请人： Tetsushi Ohtsuka ,  Yosinobu Ito

发明人： Tetsushi Ohtsuka ,  Yosinobu Ito

IPC分类号： F04C2/00 ,  F04C28/18

CPC分类号： F04C18/126 ,  F01C21/007 ,  F04C28/04 ,  F04C29/12 ,  F04C2220/10 ,  F04C2250/101

摘要： A single stage root type vacuum pump has a pair of outside air introduction holes formed in the vicinity of a phantom line in an inner wall surface within a range between intersecting points, where the intermediate position that is located between the center of a driving side rotor shaft and the center of a driven side rotor shaft of three-lobe rotors intersects with the intersecting points at which internal circles located on the extended circumferences of the inner wall surface of the casing. The pair of outside air introduction holes formed in symmetrical positions into horizontally long slit shapes parallel to a width direction of the casing. Check valves are fitted to tip end portions of outside air introduction pipes which are respectively connected to outside air communication holes for preventing air from escaping at the time of reverse rotation of the three-lobe rotors.

摘要翻译： 单级根型真空泵具有在相交点之间的范围内的内壁面中的假想线附近形成的一对外部空气导入孔，其中位于驱动侧转子的中心之间的中间位置 轴和三叶转子的从动侧转子轴的中心与位于壳体内壁表面的延伸圆周上的内圆的交点相交。 一对外部空气导入孔形成为与壳体的宽度方向平行的水平长的狭缝形状的对称位置。 止回阀安装在分别连接到外部空气连通孔的外部空气导入管的末端部分上，用于防止三叶轮转子反转时的空气逸出。

公开(公告)号：US5918853A

公开(公告)日：1999-07-06

申请号：US777377

申请日：1996-12-27

申请人： Yasuo Yamabe ,  Tetsushi Ohtsuka

发明人： Yasuo Yamabe ,  Tetsushi Ohtsuka

IPC分类号： E03F1/00 ,  F16K51/02 ,  G05D16/06 ,  G05D16/16 ,  F16K31/126

CPC分类号： G05D16/0677 ,  E03F1/006 ,  F16K51/02 ,  G05D16/163 ,  Y10S137/907 ,  Y10T137/3109 ,  Y10T137/402 ,  Y10T137/731 ,  Y10T137/7316 ,  Y10T137/7339

摘要： A vacuum valve includes a housing having an operating chamber, a plunger provided in the housing; and a self-lubricating rolling diaphragm provided between the plunger and the housing. The rolling diaphragm may have a tapered form. A vacuum valve further includes a valve rod connected to the plunger and penetrating the housing to connect with a valve body. A self-lubricating shaft seal comes into contact with the valve rod to provide an airtight seal between the housing and the valve rod.

摘要翻译： 真空阀包括具有操作室的壳体，设置在壳体中的柱塞; 以及设置在柱塞和壳体之间的自润滑滚动隔膜。 滚动隔膜可以具有锥形形式。 真空阀还包括连接到柱塞并穿透壳体以与阀体连接的阀杆。 自润滑轴封与阀杆接触，以在壳体和阀杆之间提供气密密封。

公开(公告)号：US06298870B1

公开(公告)日：2001-10-09

申请号：US09462203

申请日：2000-01-04

申请人： Tetsushi Ohtsuka ,  Tomohiro Nakamura

发明人： Tetsushi Ohtsuka ,  Tomohiro Nakamura

IPC分类号： F04F300

CPC分类号： E03F1/007 ,  Y10T137/3109 ,  Y10T137/402

摘要： In a vacuum-operated sewage system, a vacuum sewage pipe (31) evacuated inside to a vacuum state is connected to a sewage suction pipe (15) via a vacuum valve (14) operated by the vacuum in the vacuum sewage pipe (31). While the vacuum valve (14) is open, sewage accumulated in a sewage tank (11) is sucked through the sewage suction pipe (15) into the vacuum sewage pipe (31). An air inlet valve (20) is connected in the neighborhood of the vacuum valve (14) and between the vacuum valve (14) and the vacuum sewage pipe (31), and operated by the vacuum in the vacuum sewage pipe (31). When the degree of vacuum drops in the vacuum sewage pipe (31), the air inlet valve (20) is allowed to open and supply air into the vacuum sewage pipe (31).

摘要翻译： 在真空操作的污水系统中，通过真空阀（14）在真空排污管（31）内通过真空操作的真空阀（14）将吸入真空的真空污水管（31）连接到污水吸入管（15） 。 当真空阀（14）打开时，积聚在污水箱（11）中的污水通过污水吸入管（15）被吸入真空污水管（31）。 进气阀（20）在真空阀（14）附近，真空阀（14）和真空污水管（31）之间连接，并通过真空污水管（31）中的真空进行操作。 当真空污水管（31）中的真空度下降时，进气阀（20）被允许打开并将空气供给到真空污水管（31）中。

公开(公告)号：US20090004039A1

公开(公告)日：2009-01-01

申请号：US12087159

申请日：2006-12-26

申请人： Tetsushi Ohtsuka ,  Yosinobu Ito

发明人： Tetsushi Ohtsuka ,  Yosinobu Ito

IPC分类号： F04C29/04 ,  F04C18/18

CPC分类号： F04C18/126 ,  F01C21/007 ,  F04C28/04 ,  F04C29/12 ,  F04C2220/10 ,  F04C2250/101

摘要： To provide a single stage root type-vacuum pump which can prevent an increase in an installation space while achieving a fine anti-corrosion property, and can shorten discharge time by preventing a drop in a pumping flow rate when pumping by reverse rotation, and to provide a vacuum fluid transport system employing this single stage root type-vacuum pump.A pair of outside air introduction holes (22, 22) is formed in the vicinity of a phantom line (m) in an inner wall surface (6c) within a range between intersecting points (q, q), where the intermediate position (p) is located between the center of a driving side Root type-s rotor shaft (11) and the center of a driven side Root type-s rotor shaft (12) of three-lobe rotors (20, 21), and where the intersecting points (q, q) are the points at which internal circles located on the extended circumferences of the inner wall surface (6c) of the casing (6) intersect with the intermediate position (p). The pair of outside air introduction holes (22, 22) is formed in symmetrical positions into horizontally long slit shapes parallel to a width direction of the casing. Check valves (27) are fitted to tip end portions (26a, 26a) of outside air introduction pipes (26, 26) which are respectively connected to outside air communication holes (24, 24) so as to avoid air from escaping at the time of reverse rotation of the three-lobe rotors (20, 21).

摘要翻译： 提供单级根型真空泵，其可以防止在提供良好的防腐蚀性能的同时增加安装空间，并且可以通过防止通过反向旋转泵送时的泵送流量的下降来缩短放电时间，并且 提供采用这种单级根真空泵的真空流体输送系统。 在相交点（q，q）之间的范围内的内壁面（6c）中的虚线（m）附近形成有一对外部空气导入孔（22,22），其中中间位置 ）位于驱动侧根型转子轴（11）的中心与三叶转子（20,21）的从动侧根型转子轴（12）的中心之间，并且其中交叉 点（q，q）是位于壳体（6）的内壁表面（6c）的延伸圆周上的内圆与中间位置（p）相交的点。 一对外部空气导入孔（22,22）形成为与壳体的宽度方向平行的水平长的狭缝形状的对称位置。 止回阀（27）安装在分别连接到外部空气连通孔（24,24）上的外部空气导入管（26,26）的前端部分（26a，26a）上，以避免空气逸出 所述三叶片转子（20,21）的反转。

公开(公告)号：US5615701A

公开(公告)日：1997-04-01

申请号：US255716

申请日：1994-06-07

申请人： Yasuo Yamabe ,  Tetsushi Ohtsuka

发明人： Yasuo Yamabe ,  Tetsushi Ohtsuka

IPC分类号： E03F1/00 ,  F16K51/02 ,  G05D16/06 ,  G05D16/16 ,  B65G53/00 ,  F16K31/126

CPC分类号： G05D16/0677 ,  E03F1/006 ,  F16K51/02 ,  G05D16/163 ,  Y10S137/907 ,  Y10T137/3109 ,  Y10T137/402 ,  Y10T137/731 ,  Y10T137/7316 ,  Y10T137/7339

摘要： A vacuum control valve controls the removal of sewage or other liquid removed from a tank by a vacuum discharge pipe. The control valve uses the amount of liquid in the tank, the atmospheric pressure, and the vacuum pressure of the vacuum discharge pipe to open or close a pipe communicating section which attaches the vacuum discharge pipe to a suction pipe disposed within the tank. When the pipe communicating section is opened, the liquid is removed from the tank via the suction pipe and the vacuum discharge pipe. When the tank is emptied, a damping diaphragm allows for decompression of pressure around its peripheral portion to prevent excessive suction. An opening time adjusting valve automatically self-adjusts to control the time period for a single suction activity based on the vacuum pressure inside the vacuum discharge pipe.

摘要翻译： 真空控制阀通过真空排出管控制从罐中除去的污水或其他液体。 控制阀使用罐中的液体量，大气压力和真空排出管的真空压力来打开或关闭将真空排放管附接到设置在罐内的吸入管的管连通部。 当管道连通部分打开时，液体经由吸入管和真空排出管从罐中移出。 当罐被清空时，阻尼隔膜允许围绕其周边部分减压，以防止过度的吸入。 打开时间调节阀自动自动调节，以根据真空排气管内的真空压力来控制单次吸气活动的时间。