| 摘要 |
A roller pump with a pair of opposed rollers which travel in a circular path concentric with a bearing surface of angular length less than 180 DEG and squeeze a flexible tube against the bearing surface. Lead ramps extend outwardly from the ends of the bearing surface so that as one roller begins to squeeze the flexible tube, the opposite roller begins to disengage said flexible tube; thereby providing a relatively constant driving torque and smooth operation of the pump.
|
