Fluid Transfer
A progressive cavity pump moves high viscosity finishing pastes and shear sensitive dyeing polymers through textile production lines with steady volumetric displacement. Rotating helical rotors inside elastomeric stators squeeze the fluid forward without turbulence. This positive displacement action prevents the breakdown of delicate molecular chains present in specialized print pastes.
Mills rely on this mechanism to meter thick sizing solutions precisely onto warp yarns before weaving begins.
Shear Protection
Maintaining low internal velocity keeps structural integrity intact for sensitive chemical formulations. Centrifugal alternatives generate high shear forces that degrade expensive thickening agents during application. The single internal cavity design shields delicate emulsions from mechanical damage throughout the transfer process.
Consistent flow rates prevent streaks and uneven patches from appearing across dyed fabric surfaces.
Metering Accuracy
Volumetric output depends directly on rotational speed rather than discharge pressure variations. Processing lines achieve exact chemical dosing because the displacement volume remains constant per revolution. Technicians calibrate drive motors to match output requirements for specific coating weights on technical textiles.
This exactness eliminates waste of costly finishing auxiliaries during commercial production runs.
Viscosity Tolerance
Thick mixtures pass through the internal pumping elements without losing volumetric efficiency. Higher resistance actually improves the volumetric seal between the rotor and stator walls. Fluid friction increases near the discharge port when handling heavy pigment pastes.
Operating parameters must account for elevated torque demands when pumping dense compounds through fine dispensing nozzles.
