What is a screw pump rotor？

The rotor is an essential component of a screw pump. It is a cylindrical or conical-shaped shaft with a helical screw thread wrapped around it. When the rotor rotates inside the stator, the screw thread forms a series of chambers that trap and move the fluid from the pump inlet to the outlet.To get more news about SEEPEX Pump Parts, you can visit hw-screwpump.com official website.

The geometry of the rotor screw thread can vary depending on the type of screw pump. In general, there are two types of rotors used in screw pumps: single screw and twin screw. Single screw rotors have a single helical thread, while twin screw rotors have two intermeshing helical threads.
The material used for the rotor is also critical to the pump’s performance and longevity. Rotor materials should have high wear resistance, corrosion resistance, and mechanical strength. Common materials used for rotor construction include stainless steel, bronze, and various alloys.

One of the critical factors that affect the pump’s performance is the clearance between the rotor and the stator. The rotor’s helical screw thread should be closely matched to the stator’s internal profile to ensure that there is minimum clearance between the two components. This ensures that the fluid is effectively trapped and moved along the screw thread without any leakage.The rotor’s rotational speed also plays a critical role in the pump’s performance. A higher rotational speed leads to increased flow rate and pressure, but it also increases wear and tear on the rotor and stator. Therefore, the rotor speed should be optimized to balance performance and longevity.

In conclusion, the rotor is a critical component of a screw pump. Its design, material, and clearance affect the pump’s performance and longevity. Proper maintenance and care of the rotor can ensure optimal pump performance and longevity.