| 摘要 |
PURPOSE: A pump device is provided to reduce manufacturing and maintaining cost, noise and foot space by substituting driving and driven gears operating by lubricant to driving and driven rotation elements and links, so that substitution or adding of the lubricant is not necessary. CONSTITUTION: A pump device includes a multiple spindle transferring type pump having a casing defining at least one pump chamber(2a,4a) having a suction hole(2b) and a discharge hole, and rotors(9,10) mounted on a plurality of parallel spindles(7,8) with a narrow clearance each other in the pump chamber, a rotation driving device(M) mounted adjacently to the multiple spindle transferring type pump and having a driving shaft protruded from a driving main body(30), and an electric motor train having a driving rotation body(21) fixed on the driving shaft of the rotation driving device, a driven rotation body(22) fixed on the respective spindles of the pump, and a link(24) wound on the driving and driven rotation bodies for transferring the rotation of the driving rotation body to the driven rotation body.
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