蠕动泵体
Peristaltic pump body
蠕动泵体由三部分组成:驱动器，泵头和软管。流体被隔离在泵管中、可快速更换泵管、流体可逆行、可以干运转，维修费用低，等特点构成了蠕动泵体的主要竞争优势。蠕动泵体就是在两个转辊子之间的一段泵管形成"枕"形流体。"枕"的体积取决于泵管的内径和转子的几何特征。拿转子直径相同的泵相比较，产生较大"枕"体积的泵，其转子每转一圈所输送的流体体积也较大，但产生的脉动度也较大。这与膜阀的情形相似。而产生较小"枕"体积的泵，其转子每转一圈所输送的流体体积也较小;而且，快速、连续地形成的小"枕"使流体的流动较为平稳。这与齿轮泵的工作方式相似。
Peristaltic pump body consists of three parts: driver, pump head and hose. The main advantages of the pump are that the fluid is retrograde and the pump body can be replaced quickly and the pump body can be replaced quickly. The peristaltic pump body is a section of pump pipe between the two rollers to form a pillow shaped fluid. The volume of the "pillow" depends on the inner diameter of the pump pipe and the geometric characteristics of the rotor. Compared with the pump with the same rotor diameter, the pump with larger "pillow" volume will deliver larger volume of fluid per revolution, but the pulsation will also be larger. This is similar to the case of membrane valves. For the pump with small pillow volume, the volume of fluid delivered by each revolution of its rotor is also small; moreover, the small pillow formed rapidly and continuously makes the fluid flow more stable. This is similar to the way gear pumps work.