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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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公开(公告)号：US20080019831A1
公开(公告)日：2008-01-24
申请号：US11631483
申请日：2004-11-12
申请人： Kenichi Kajiwara , Junya Kawabata , Sou Kuroiwa , Tetsutaro Fujiwara , Shoji Ito
发明人： Kenichi Kajiwara , Junya Kawabata , Sou Kuroiwa , Tetsutaro Fujiwara , Shoji Ito
IPC分类号： F01D25/24
CPC分类号： F04D29/4286 , F04D1/066 , F04D7/06 , F04D29/026 , F05D2230/234 , F05D2260/95 , F05D2300/171
摘要： A centrifugal pump includes at least one impeller (11) fixed to a main shaft (10) and at least one casing which houses the impeller and is formed through press working of sheet metal such as a steel plate. The centrifugal pump further includes a casing cover configured to seal an open end of the casing hermetically, and a shaft seal device (12) provided at a portion where the main shaft passes through the casing cover. The casing cover has a thick member (6) made of castings, and a thin corrosion-resistant lining member (40) which is tightly fixed to the thick member.
摘要翻译： 离心泵包括固定到主轴（10）的至少一个叶轮（11）和容纳叶轮的至少一个壳体，并且通过诸如钢板的金属板的冲压加工形成。 离心泵还包括壳体盖，其构造成密封壳体的开口端，以及设置在主轴穿过壳体盖的部分处的轴密封装置（12）。 壳体盖具有由铸件制成的厚构件（6），以及紧密地固定到厚构件的薄的耐腐蚀衬里构件（40）。
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公开(公告)号：US20050147505A1
公开(公告)日：2005-07-07
申请号：US10501885
申请日：2003-01-21
申请人： Sou Kuroiwa , Kenichi Kajiwara , Shoji Ito , Kikuichi Mori , Aki Ishikawa , Tetsutaro Fujiwara
发明人： Sou Kuroiwa , Kenichi Kajiwara , Shoji Ito , Kikuichi Mori , Aki Ishikawa , Tetsutaro Fujiwara
CPC分类号： F04D29/086 , F04D1/063 , F04D1/066 , F04D29/4266
摘要： A multistage pump according to the present invention has a plurality of intermediate casings (2) formed by press-forming a steel plate. The intermediate casing has a cylindrical side portion (21), a stage flat portion (23) with which an axial end face of an adjacent intermediate casing is held in contact, a stage side portion (24) extending axially from the stage flat portion, and a bottom portion (25) extending radially inward from the stage side portion. A relief plate (30) having an outer circumferential end face which is held in contact with an inner surface of a cylindrical side portion of the adjacent intermediate casing is attached to the bottom portion of the intermediate casing. The relief plate, the stage side portion, the stage flat portion, and the inner surface of the cylindrical side portion of the adjacent intermediate casing form a space in which an O-ring (40) is fitted.
摘要翻译： 根据本发明的多级泵具有通过冲压成形钢板形成的多个中间壳体（2）。 中间壳体具有圆柱形侧部（21），相邻中间壳体的轴向端面保持接触的平台部（23），从平台部分轴向延伸的台侧部分（24） 和从舞台侧部分径向向内延伸的底部（25）。 具有与相邻中间壳体的圆筒形侧部的内表面保持接触的外周端面的安全板（30）安装在中间壳体的底部。 凸版，台侧部分，平台部分和相邻中间壳体的圆柱形侧部分的内表面形成安装有O形环（40）的空间。
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公开(公告)号：US07648337B2
公开(公告)日：2010-01-19
申请号：US10501885
申请日：2003-01-21
申请人： Sou Kuroiwa , Kenichi Kajiwara , Shoji Ito , Kikuichi Mori , Aki Ishikawa , Tetsutaro Fujiwara
发明人： Sou Kuroiwa , Kenichi Kajiwara , Shoji Ito , Kikuichi Mori , Aki Ishikawa , Tetsutaro Fujiwara
IPC分类号： F01D25/24
CPC分类号： F04D29/086 , F04D1/063 , F04D1/066 , F04D29/4266
摘要： A multistage pump according to the present invention has a plurality of intermediate casings (2) formed by press-forming a steel plate. The intermediate casing has a cylindrical side portion (21), a stage flat portion (23) with which an axial end face of an adjacent intermediate casing is held in contact, a stage side portion (24) extending axially from the stage flat portion, and a bottom portion (25) extending radially inward from the stage side portion. A relief plate (30) having an outer circumferential end face which is held in contact with an inner surface of a cylindrical side portion of the adjacent intermediate casing is attached to the bottom portion of the intermediate casing. The relief plate, the stage side portion, the stage flat portion, and the inner surface of the cylindrical side portion of the adjacent intermediate casing form a space in which an O-ring (40) is fitted.
摘要翻译： 根据本发明的多级泵具有通过冲压成形钢板形成的多个中间壳体（2）。 中间壳体具有圆柱形侧部（21），相邻中间壳体的轴向端面保持接触的平台部（23），从平台部分轴向延伸的台侧部分（24） 和从舞台侧部分径向向内延伸的底部（25）。 具有与相邻中间壳体的圆筒形侧部的内表面保持接触的外周端面的安全板（30）安装在中间壳体的底部。 凸版，台侧部分，平台部分和相邻中间壳体的圆柱形侧部分的内表面形成安装有O形环（40）的空间。
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