蠕動(dòng)泵通過(guò)對(duì)泵的彈性輸送軟管交替進(jìn)行擠壓和釋放來(lái)泵送流體。就象用兩根手指夾擠軟管一樣,隨著手指的移動(dòng),管內(nèi)形成負(fù)壓,液體隨之流動(dòng).蠕動(dòng)泵就是在兩個(gè)轉(zhuǎn)輥?zhàn)又g的一段泵管形成“枕”形流體?！罢怼钡捏w積取決于泵管的內(nèi)徑和轉(zhuǎn)子的幾何特征。流量取決于泵頭的轉(zhuǎn)速與“枕”的尺寸、轉(zhuǎn)子每轉(zhuǎn)一圈產(chǎn)生的“枕”的個(gè)數(shù)這三項(xiàng)參數(shù)之乘積?！罢怼钡某叽缫话銥槌Ａ浚ū盟驼承蕴貏e大的流體時(shí)除外）。拿轉(zhuǎn)子直徑相同的泵相比較，產(chǎn)生較大“枕”體積的泵，其轉(zhuǎn)子每轉(zhuǎn)一圈所輸送的流體體積也較大，但產(chǎn)生的脈動(dòng)度也較大。這與膜閥的情形相似。而產(chǎn)生較小“枕”體積的泵，其轉(zhuǎn)子每轉(zhuǎn)一圈所輸送的流體體積也較?。欢?，快速、連續(xù)地形成的小“枕”使流體的流動(dòng)較為平穩(wěn)。這與齒輪泵的情形相似。
The creep pump works by squeezing and releasing the pump by squeezing and releasing the pump. Like use two fingers to squeeze the hose, along with the movement of the fingers, tube forming negative pressure, the liquid flow. Peristaltic pump is between two turning rolls a form "pillow" form fluid pump pipe. The size of the pillow depends on the internal diameter and the geometry of the rotor. The flow rate depends on the number of "pillow" the number of the "pillow" of the pump head and the "pillow" of the rotor. The size of the "pillow" is usually constant (except when the pump delivers a particularly viscous fluid). With rotor diameter, in comparison with the same pump "pillow" larger volume pump, its rotor per round the transmission fluid volume is bigger also, but the pulse is bigger also. This is similar to the membrane valve. The volume of the pump that produces a smaller "pillow" is smaller than that of the rotor. Furthermore, the rapid and continuous formation of small "pillows" makes the fluid flow more smoothly. This is similar to the case of a gear pump.
