更换泵管操作步骤：
将连接泵进出口的管道拆开，并将冷却液放出。将进出口管夹内六角螺栓（各四个）拧下。短接管及管卡取出。将进出口前接管螺栓旋出，将前接管、压环及密封圈取出。启动电机，使电机顺时针旋转，将软管拉出。启动电机，使电机逆时针旋转。将新软管一侧涂少量润滑脂（黄油），然后将涂有润滑脂的一侧向泵壳壁，从泵壳上方插入至泵壳中，直至软管到泵壳下方出口的合适位置，停电机。将密封圈套至软管下口泵接管内，将压环装入，拧紧前接管螺栓，装入管夹，拧紧管夹螺栓。启动电机，使电机逆时针旋转，用手或橡胶板堵住软管上方口，软管全自行进入泵中，通过泵侧面窗口观察，使软管贴到泵壳内壁，停电机，按固定的方式将软管安装好。填加冷却液，软管更换即告完成。

首先我们先介绍一下软管泵，软管泵又称蠕动泵。为了泵体污染流体或流体污染泵体的危险性，整个泵的装置中只有软管与介质接触。在一般场合下，软管泵使用的都是天然橡胶的软管。内层和外层都是完整光滑的天然橡胶，其目的是很强防磨损。适用于腐蚀性不高但磨损性很大的如泥浆以及无机物等等介质。而且一般适用于脂肪、油类或油脂的介质，以及有机化学物质。内层是橡胶，而外层是天然橡胶或者是复合橡胶。

First of all, lets introduce the hose pump, which is also called peristaltic pump. In order to eliminate the danger of the pump body contaminating the fluid or the fluid contaminating the pump body, only the hose in contact with the medium in the entire pump device. In general, hose pumps use natural rubber hoses. The inner and outer layers are completely smooth natural rubber, the purpose of which is to prevent abrasion. It is suitable for mediums that are not corrosive but very abrasive, such as mud and inorganic substances. And generally suitable for fats, oils or oils, and organic chemicals. The inner layer is rubber, while the outer layer is natural rubber or composite rubber.