| 摘要 |
PROBLEM TO BE SOLVED: To provide an uniaxial eccentric screw pump capable of suppressing deterioration of pressure delivery performance caused by liquid leakage from a high-pressure side to a low-pressure side. SOLUTION: The uniaxial eccentric screw pump 1, while a male screw shaped rotor 2 directly connected to a drive shaft 3 is rotating, is used to pressure-deliver a fluid from a suction side to a discharge side by performing an eccentric motion relative to a shaft center of a stator 4, and includes a communicating passage 20 formed in an axial direction at a position between self-lubricating bearings 5, 6 and the stator 4. The communicating passage 20 has a partitioning portion 22 for avoiding the suction side and the discharge side from becoming a direct communicating state. COPYRIGHT: (C)2010,JPO&INPIT |
