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）。

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。

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

IPC分类号： F04D29/08 ,  F04D1/06 ,  F04D29/42 ,  F04B3/00 ,  F04B5/00

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。

公开(公告)号：US20050002789A1

公开(公告)日：2005-01-06

申请号：US10501886

申请日：2003-01-21

申请人： Kenichi Kajiwara ,  Sou Kuroiwa ,  Kikuichi Mori ,  Koichi Kunimasa

发明人： Kenichi Kajiwara ,  Sou Kuroiwa ,  Kikuichi Mori ,  Koichi Kunimasa

IPC分类号： F04D29/22 ,  F04D1/06 ,  F04D29/20 ,  F04D29/24 ,  F04D29/28 ,  F04D29/62 ,  B63H1/16

CPC分类号： F04D29/20 ,  F04D1/06 ,  F04D29/026 ,  F04D29/2227 ,  F05D2230/54 ,  F05D2300/171

摘要： An impeller (1) according to the present invention has a disk-like main plate (10), a blade (20) joined to the main plate, and a side plate (30) having a suction port. A boss hole (12) is formed in a central portion of the main plate for attaching a boss which engages with a pump shaft to the boss hole. A step portion (14) is formed around the boss hole, which is formed in the main plate, by drawing.

摘要翻译： 根据本发明的叶轮（1）具有盘状主板（10），与主板接合的叶片（20）和具有吸入口的侧板（30）。 在主板的中央部形成有凸台孔（12），用于将与泵轴接合的凸台连接到凸台孔。 通过拉伸在形成在主板中的凸台孔周围形成台阶部（14）。

公开(公告)号：US07247001B2

公开(公告)日：2007-07-24

申请号：US10501886

申请日：2003-01-21

申请人： Kenichi Kajiwara ,  Sou Kuroiwa ,  Kikuichi Mori ,  Koichi Kunimasa

发明人： Kenichi Kajiwara ,  Sou Kuroiwa ,  Kikuichi Mori ,  Koichi Kunimasa

IPC分类号： F04D29/18 ,  F04D29/24

CPC分类号： F04D29/20 ,  F04D1/06 ,  F04D29/026 ,  F04D29/2227 ,  F05D2230/54 ,  F05D2300/171

摘要： An impeller (1) according to the present invention has a disk-like main plate (10), a blade (20) joined to the main plate, and a side plate (30) having a suction port. A boss hole (12) is formed in a central portion of the main plate for attaching a boss which engages with a pump shaft to the boss hole. A step portion (14) is formed around the boss hole, which is formed in the main plate, by drawing.

摘要翻译： 根据本发明的叶轮（1）具有盘状主板（10），与主板接合的叶片（20）和具有吸入口的侧板（30）。 在主板的中央部形成有凸台孔（12），用于将与泵轴接合的凸台连接到凸台孔。 通过拉伸在形成在主板中的凸台孔周围形成台阶部（14）。

公开(公告)号：US5234317A

公开(公告)日：1993-08-10

申请号：US811067

申请日：1991-12-20

申请人： Ken-ichi Kajiwara ,  Sou Kuroiwa ,  Kikuichi Mori ,  Hideo Ikeda

发明人： Ken-ichi Kajiwara ,  Sou Kuroiwa ,  Kikuichi Mori ,  Hideo Ikeda

IPC分类号： F04D29/42 ,  F04D1/06 ,  F04D29/44 ,  F04D29/62

CPC分类号： F04D29/4266 ,  F04D1/063

摘要： A multistage centrifugal pump has a plurality of series-connected interstage casings of pressed sheet steel housing respective impellers. Each of the interstage casings includes a central cylindrical side wall, a casing end wall, a first cylindrical wall integrally extending from an end of the central cylindrical side wall and joined to the casing end wall, the first cylindrical wall serving as a male member of a spigot joint, and a second cylindrical wall integrally extending from an opposite end of the central cylindrical side wall and having a flange defining an end opening therein, the second cylindrical wall serving as a female member of a spigot joint. The central cylindrical side wall has an outside diameter larger than outside diameters of the first cylindrical wall and the flange. The interstage casing is formed by drawing and bulging, and is not machined to achieve the desired dimensional accuracy. Therefore, the interstage casing is free from deformations and dimensional errors which would otherwise tend to occur under forces that would be developed if the blank were fastened for machining, and stresses and heat that would be developed if the blank were machined.

公开(公告)号：US5369972A

公开(公告)日：1994-12-06

申请号：US112659

申请日：1993-08-27

申请人： Ken-ichi Kajiwara ,  Sou Kuroiwa ,  Kikuichi Mori ,  Hideo Ikeda

发明人： Ken-ichi Kajiwara ,  Sou Kuroiwa ,  Kikuichi Mori ,  Hideo Ikeda

IPC分类号： F04D29/42 ,  F04D1/06 ,  F04D29/62 ,  B21D22/26

CPC分类号： F04D29/4266 ,  F04D1/063

摘要： An interstage casing made of sheet metal includes a cylindrical receptacle-like body having a casing end wall on an end thereof and an open end opposite to The end. The omen end has an axial end surface and a radially inner surface which serve as a member of a spigot joint to be joined to the next interstage casing. The cylindrical receptacle-like body also includes a cylindrical side wall, a cylindrical portion joined between the casing end wall and the cylindrical side wall and having an outside diameter slightly smaller than an inside diameter of the open end, and a flat portion joined to the recessed portion and serving as an end surface of the casing end wall. The flat portion is adapted to be engageable with the end surface of the open end of an adjacent interstage casing. The flat portion has an outside diameter slightly larger than an outside diameter of the open end. The interstage casing further includes a recessed portion joined to The cylindrical portion and smaller in diameter than the cylindrical portion. The recessed portion provides a space for installing an O-ring therein.

摘要翻译： 由金属板制成的级间壳体包括圆柱形容器体，其端部具有壳体端壁和与端部相对的开口端。 所述端部具有轴向端面和径向内表面，所述径向内表面用作待接合到下一层间壳体的插口接头的构件。 圆柱形容器体还包括圆柱形侧壁，连接在壳体端壁和圆柱形侧壁之间的圆柱形部分，其外径略小于开口端的内径，以及平坦部分 凹陷部分并且用作壳体端壁的端表面。 平坦部适于与相邻级间壳体的开口端的端面接合。 平坦部分的外径略大于开口端的外径。 级间壳体还包括连接到圆柱形部分并且直径小于圆柱形部分的凹部。 凹陷部分提供了一个用于在其中安装O形环的空间。

公开(公告)号：US5318403A

公开(公告)日：1994-06-07

申请号：US811069

申请日：1991-12-20

申请人： Ken-ichi Kajiwara ,  Sou Kuroiwa ,  Kikuichi Mori ,  Hideo Ikeda

发明人： Ken-ichi Kajiwara ,  Sou Kuroiwa ,  Kikuichi Mori ,  Hideo Ikeda

IPC分类号： F04D29/42 ,  F04D1/06 ,  F04D29/62 ,  F01D25/24

CPC分类号： F04D29/4266 ,  F04D1/063

摘要： An interstage casing made of sheet metal includes a cylindrical receptacle-like body having a casing end wall on an end thereof and an open end opposite to the end. The open end has an axial end surface and a radially inner surface which serve as a member of a spigot joint to be joined to the next interstage casing. The cylindrical receptacle-like body also includes a cylindrical side wall, a cylindrical portion joined between the casing end wall and the cylindrical side wall and having an outside diameter slightly smaller than an inside diameter of the open end, and a flat portion joined to the recessed portion and serving as an end surface of the casing end wall. The flat portion is adapted to be engageable with the end surface of the open end of an adjacent interstage casing. The flat portion has an outside diameter slightly larger than an outside diameter of the open end. The interstage casing further includes a recessed portion joined to the cylindrical portion and smaller in diameter than the cylindrical portion. The recessed portion provides a space for installing an O-ring therein.

摘要翻译： 由金属板制成的级间壳体包括圆柱形容器体，其端部具有壳体端壁和与端部相对的开口端。 开口端具有轴向端面和径向内表面，其用作接头连接到下一层间壳体的插口接头的构件。 圆柱形容器体还包括圆柱形侧壁，连接在壳体端壁和圆柱形侧壁之间的圆柱形部分，其外径略小于开口端的内径，以及平坦部分 凹陷部分并且用作壳体端壁的端表面。 平坦部适于与相邻级间壳体的开口端的端面接合。 平坦部分的外径略大于开口端的外径。 级间壳体还包括接合到圆柱形部分的凹部，并且直径小于圆柱形部分。 凹陷部分提供了一个用于在其中安装O形环的空间。