| 摘要 |
<p>PURPOSE:To eliminate sliding parts and simplify the construction, by making a member corresponding to the cylinder in conventional arrangement from special expansible material, by driving it to make expansion and contraction for itself, and thereby obtaining the pulsation pump action pressure without piston and plunger. CONSTITUTION:If an expansion/contraction motion is applied to a tube 1, for ex. consisting of porous polypropylene, by a reciprocative driver part 6, the liquid flows into the hollow 9 of the tube by opening a globe valve 7 forcedly from the A side because the tube 1 has an enlarged volume at its hollow 9 at the time of expansion to give a depressurized condition. Meanwhile, another globe valve 8 blocks the pipe 2 at its outgoing side, so that fluid corresponding to the amount of expansion of the tube 1 is taken in the hollow part 9. Then, tube 1 is compressed, the volume of hollow part 9 decreased, and the fluid flows out to the B side. Accordingly a pulsation pump is allowed to work with its full performance with much simple construction which gets rid of any sliding part.</p> |
