Gear pumps and screw pumps are both positive displacement pumps because their functions are fundamentally similar - they can stably deliver high viscosity substances and have high delivery pressure.
However, the screw pump has a major drawback that determines its lack of practicality - due to its non streamlined curved surface and numerous shortcomings in the chamber, it has a short lifespan and cannot deliver liquids with higher concentrations than screw pumps, while gear pumps cannot deliver liquids.
The cargo characteristics of gear pumps: Long service life: Maintain a definite gap between the two wheels, without conflict or wear. There is no contact between the rotor and the rotor, and there is no wear during temporary use. The operation is stable, with low noise and high efficiency.
Wide range of practical applications: conveying high viscosity, concentration, and mission containing media, which is a practical substitute for screw pumps.
