| 摘要 |
PURPOSE: A liquid feeding pump having a conical shaped impeller is provided to improve suction force and exhaust force and to reduce manufacturing cost by forming an impeller in a conical shape, thereby creating a swirl flow. CONSTITUTION: A liquid feeding pump(2) includes a cone-shaped housing(4) having a first chamber formed with a return port and a second chamber(18) formed with a suction port and an exhaust port. A power transmission shaft(6) is assembled into the cone-shaped housing(4) through a bush(30) made of resin. The power transmission shaft(6) is connected to a rotating shaft of a motor. A conical-shaped impeller(8) is coupled to the second chamber(18) in order to suck and discharge fluid. A rotating plate formed with radial blades is installed on the power transmission shaft(6).
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