| 20110280718 | PRESSURIZING CENTRIFUGAL PUMP - In a pressurizing centrifugal pump, tips of blades are arranged at a level lower than that of an outer circumferential surface of a blade plate by a level difference provided from the outer circumferential surface toward a central position of the blade plate. The outer circumferential surface of the blade plate is arranged close to an inner circumferential wall of a case to form a fluid control space for controlling movement of the fluid toward a rear side of the blades. A fluid passage space for promoting passage of a foreign substance in the fluid is formed between the inner circumferential wall and the tips of the blades. | 11-17-2011 |
