Screw pump is a single-screw transfer pump.Its main working parts include the screw of eccentric helicoids(called rotor)and the screw bush with a double-line helicoids on its surface(called stator).

• 螺杆泵是一种单螺杆输运泵，它的主要工作部件是偏心螺旋体的螺杆（称转子）和内表面呈双线螺旋面的螺杆衬套（称定子）。