Pulp pumps can be mainly classified according to the concentration of the pulp they convey and the type of impeller structure.
Based on pulp concentration, pulp pumps can be classified into low-consistency pumps (concentration C%), medium-consistency pumps (7%≤C%), and high-consistency pumps (C≥16%).
Based on impeller structure, low-consistency pumps can be mainly classified into open/semi-open pumps, single-channel/dual-channel pumps, vortex pumps, and spiral centrifugal pumps.
Different impeller structures have different performance characteristics: Open/semi-open pumps, while ensuring the impeller-pump cover clearance, have good non-clogging performance and gas-carrying capacity, resulting in high efficiency; single/dual-channel pumps have good non-clogging performance and can transport large particles and long fibers, but their gas-carrying capacity is poor; vortex pumps have good non-clogging performance and good gas-carrying capacity, but their efficiency is low and they are more destructive to materials; spiral centrifugal pumps have superior overall performance, can handle large particles, have minimal damage to the pulp, are non-destructive, have high efficiency, and strong gas-carrying capacity, and are already used for transporting medium-consistency pulp.
