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公开(公告)号：US5667362A
公开(公告)日：1997-09-16
申请号：US216427
申请日：1994-03-23
申请人： Yukio Murai , Seiichi Toguchi
发明人： Yukio Murai , Seiichi Toguchi
CPC分类号： F04D15/0218 , F04D15/0066 , F04D29/708
摘要： A pump system comprising a pump having a centrifugal impeller driven by an electric motor, a pair of upper and lower float switches for detecting a high water level HWL and a low water level LWL, respectively, a controller for outputting a control signal on the basis of preset rotational speeds for low and high-speed operations and a preset rotational speed increment rate, together with output signals from the upper and lower float switches, and a frequency converter for varying the rotational speed of the electric motor on the basis of the control signal from the controller, the pump system is capable of exhibiting the required pumping performance and of controlling the flow rate and the pump head.
摘要翻译： 一种泵系统，包括具有由电动机驱动的离心式叶轮的泵，分别用于检测高水位HWL和低水位LWL的一对上下浮子开关，用于输出控制信号的控制器 以及用于低速和高速操作的预设转速以及预设转速增量率以及来自上浮动开关和下浮动开关的输出信号，以及用于基于控制来改变电动机的转速的变频器 来自控制器的信号，泵系统能够表现出所需的泵送性能和控制流量和泵头。
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公开(公告)号：US4592700A
公开(公告)日：1986-06-03
申请号：US586441
申请日：1984-03-05
申请人： Seiichi Toguchi , Makoto Kobayashi
发明人： Seiichi Toguchi , Makoto Kobayashi
CPC分类号： F04D29/2244
摘要： A vortex pump is provided wherein an impeller is of an open type and plural blades are grouped into two or more groups, the axial width of each group of blades being different from the others so that the blades belonging to a certain group extend into a vortex chamber so as to directly drive the liquid in the vortex chamber while relatively large pieces of foreign matter are permitted to pass through the pump.
摘要翻译： 提供了一种涡流泵，其中叶轮是开式的，并且多个叶片被分组成两组或更多组，每组叶片的轴向宽度与其他组不同，使得属于某一组的叶片延伸到涡流 以便直接驱动涡流室中的液体，同时允许相对较大的异物通过泵。
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公开(公告)号：US5769603A
公开(公告)日：1998-06-23
申请号：US683090
申请日：1996-07-18
CPC分类号： F04D7/04 , F04D13/086 , F04D29/426 , F04D29/445 , F04D9/002 , F05B2260/604
摘要： A submerged pump used, for example, in a duplex treating tank for sewage includes a pump casing including an inlet portion, a pump chamber and a discharge portion, and a motor for driving and rotating an impeller provided in the pump chamber. The motor is integrally secured to the pump casing. The pump casing has at least two subcasings assembled together, at least one of the subcasings having a projection defining a narrowed passage portion. An obtusely oriented air vent hole is provided in the lower casing.
摘要翻译： 例如，在用于污水的双重处理槽中使用的浸没泵包括：泵壳体，其包括入口部分，泵室和排出部分，以及用于驱动和旋转设置在泵室中的叶轮的马达。 电动机一体地固定在泵壳体上。 所述泵壳体具有组装在一起的至少两个子系统，至少一个所述子系统具有限定狭窄通道部分的突出部。 在下壳体中设置有钝角定向的排气孔。
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