Pulsation preventing method and device for peristaltic finger pump

Abstract

Abstract PURPOSE: To achieve a steady flow ideal for a transportation pump, by employing a pulsation correction finger designed on the basis of real measurement or calculation to prevent the pulsation. CONSTITUTION: In a liquid feed wave formed by transportation fingers 15 1 and 15 10 , pulsation correction fingers 15 11 and 15 12 are pressed when the flow is reduced to increase the flow at the delivery side 23 by the amount corresponding with the collapse of the tube. While at the portion where the flow is high, said fingers 15 11 and 15 12 are gradually retreated. Then the tube 20 is resiliently recovered and the liquid fed from the delivery side 23 is reduced by the amount corresponding with the collapsion of the tube. When performing the contraction and the expansion of the tube 20 at the delivery side 23 through the function of pulsation correction fingers 15 11 and 15 12 in accordance with the liquid feeding wave, the pulsation is prevented while the transporting liquid amount is made constant resulting in ideal steady flow. COPYRIGHT: (C)1981,JPO&Japio

Inventors

• 👤 Susumu Kobayashi
• 👤 Hideyuki Morikawa

Bibliographic Details