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» 蠕动泵

蠕动泵

1881
  • Eugene Allen
无菌应用液压机械中的蠕动泵机制。.

(图片仅供参考)

蠕动型 is a positive displacement pump where fluid is contained within a flexible tube fitted inside a circular pump casing. A rotor with several ‘rollers’ or ‘shoes’ compresses the tube as it turns. This compression wave moves along the tube, forcing the fluid to move. The fluid only contacts the tube’s interior, making it ideal for sterile applications.

The operating principle of a peristaltic pump is inspired by the biological process of peristalsis, such as in the human gastrointestinal tract. The core components are the flexible tubing, the rotor, a set of rollers or shoes attached to the rotor, and the pump housing or ‘track’ that holds the tube in place. As the rotor turns, the rollers progressively squeeze the tubing against the housing, creating a temporary seal. This seal separates a ‘pillow’ or pocket of fluid. The rotation of the rotor moves this pocket along the tube from the inlet to the outlet.

One of the primary advantages of this design is that the pumped fluid is completely isolated from the pump’s mechanical components. This prevents contamination of the fluid and protects the pump from corrosive or abrasive media. This makes peristaltic pumps invaluable in sterile environments like medicine and biotechnology. They are also sealless, eliminating a common point of failure and leakage in other pump types. The gentle pumping action is suitable for shear-sensitive fluids, such as live cells or large proteins, that would be damaged by the high-speed impellers of centrifugal pumps.

Flow rate is determined by the rotor speed and the tube’s inner diameter, making them excellent for precise metering and dosing applications. However, they do have limitations. The flow is inherently pulsating, although this can be mitigated by using more rollers. The flexible tubing is a consumable part that wears out over time and requires periodic replacement.

UNESCO Nomenclature: 3313
- 机械工程

类型

物理设备

中断

重大的

用法

广泛使用

前体

  • 了解食道等生物体的生物蠕动
  • 开发柔性、弹性材料,如硫化橡胶,用于管道
  • 机械工程在制造旋转机构方面的进步
  • 运动流体的正排量概念

应用程序

  • 医用输液泵和透析机
  • 在水处理和游泳池中添加化学品
  • 在制药生产中泵送无菌介质
  • 食品加工,用于处理酱汁等剪切敏感产品
  • 精确流体计量的分析化学
  • 混凝土泵送

专利:

  • US249287

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Related to: peristaltic pump, positive displacement, tubing pump, roller pump, medical pump, sterile pumping, dosing pump, shear-sensitive, fluid metering, sealless pump.

历史背景

蠕动泵

1850
1867
1875-01-01
1881
1884
1890
1890
1850
1860
1870
1876
1882-01-01
1886-04-23
1890
1897

(如果日期未知或不相关,例如“流体力学”,则提供其显著出现的近似估计)

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