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A Study for Regulating Flow Fluctuation and Preventing Backflow of Peristaltic Pump

연동펌프의 유량맥동 조절과 역류현상을 방지하는 장치에 대한 연구

  • Jeong, Yoo-seok (Department of Mechanical Engineering Sogang University) ;
  • Lee, Cheol-Soo (Department of Mechanical Engineering Sogang University) ;
  • Lee, Tae-Kyung (Department of Mechanical Engineering Sogang University)
  • Received : 2015.12.31
  • Accepted : 2016.04.20
  • Published : 2016.10.01

Abstract

Though a peristaltic pump is a crucial element in miniaturized drug delivery systems, it has some intrinsic disadvantages such as backflow and flow fluctuation. To overcome these limitation, we have developed valve-less peristaltic pump system including orifice and stagnation chamber. we measured flow rate to investigate the performance of rotary peristaltic pump with three rollers and an elastomeric tube pumping a viscous fluid. The flow fluctuations and the backflow happen as a result from the disengagement of the contact interaction between the rollers and the tubes. Stagnation chamber installed in front of orifice plate was composed of rubber tube and gas chamber. By changing orifice hole diameter with stagnation chamber flow rate and pressure in the tube was regulated. The obtained maximum reduction ratio of flow fluctuation is 96.79%.

Acknowledgement

Supported by : 한국산업기술진흥원(KIAT)

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