| 摘要 |
PURPOSE:To control the delivery pressure and capacity efficiently by arranging a suction blocking member and a delivery control valve for setting the open/ close timing of the suction, delivery ports formed at the vane fitting sections of both rotors of a contactless pump in respective rotors. CONSTITUTION:In a contactless pump, two rotors 1, 2 having vanes 4 and vane fitting sections 5 are geared and arranged in a casing. A suction port 17 and a delivery port 8 communicatable with the interior of the rotor are formed in the bottom of the vane fitting sections 5 of both rotors 1, 2 and constructed such that the fluid can be sucked/discharged with predetermined timing by overlapping a delivery control valve 14 fitted over the inner circumferential section of the rotors 1, 2 and the open section of a suction blocking member 15. The delivery control valve 14 and the suction blocking member 15 can vary the position of the open section through rotation resulting in a free and efficient control of the delivery pressure and the capacity of pump.
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