| 摘要 |
PROBLEM TO BE SOLVED: To provide displacement pump capable of reducing an excessive supply of objects when the feed-out amount of objects by the pump is large. SOLUTION: The displacement pump 11 is equipped with a rotor 14c and a space forming member 14d, wherein the rotor is furnished with a suction hole 13, a discharge hole 12, and a through hole 101a, while the space forming member 14d works together with the rotor to form trap spaces 14a and 14b. Each trap space changes its own capacity and sucks in and discharges the fluid according to the capacity change. The rotor enlarges and shrinks the capacities of the trap spaces, and the suction hole is in communication with the trap spaces and sucks in the fluid when the capacities of the trap spaces enlarge. The discharge hole is in communication with the trap spaces and discharges the fluid when the capacities of the trap spaces shrink. The through hole is in communication with the space whereto the fluid is discharged from the discharge hole, and the suction hole. COPYRIGHT: (C)2011,JPO&INPIT
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