?The main purpose of hardening the rotor surface of a G-type sanitary screw pump is to enhance the rotor's wear and corrosion resistance, thereby increasing the pump's service life and operating efficiency.

?The progressive cavity pump rotor plays a crucial role in a progressive cavity pump. Its primary function is to propel or extract fluids through rotation. The following is a detailed explanation of the role of the progressive cavity pump rotor:

?Common causes of premature stator wear in screw pumps include the following:

?The main types of seals used in direct-coupled progressive cavity pumps include the following:

?The materials commonly used for the stator of a single-screw pump include rubber, elastomers, and synthetic resins. The choice of these materials depends primarily on the pump's application, the nature of the conveying medium, and the required wear resistance, corrosion resistance, and elasticity.

?A twin-screw pump requires a strict meshing clearance for several key reasons:

?Compared to ordinary screw pumps, single-stage screw pumps have some special structural features. These features are primarily designed to meet the unique requirements of the dosing process. The following are some of the special structural features of single-stage screw pumps: