Key Functions of Pulper Rotor in the Pulping Process
The pulper rotor, as the core executing component of hydrapulper, plays a key role in fiber dissociation, impurity stripping, and pulp homogenization. Its performance directly determines pulping efficiency, fiber quality, and system energy consumption. In the process of paper recycling and fiber resource utilization, the pulper rotor achieves three core goals through the synergistic effect of mechanical shearing and hydraulic action:
- One is to complete fiber bundle dehazing without damaging the fiber length.
- The second is to efficiently remove contamination such as ink and adhesives.
- The third is to form a stable turbulent flow field to ensure the uniformity of the pulp.
Data shows that high-quality pulper rotor design can reduce the unit energy consumption of the pulping system by 22% to 30%, and control the fiber cutting index below 0.15, laying the foundation for subsequent copying processes.
Structure of Hydrapulper Rotor (Impeller)
A typical pulper rotor consists of a turntable body, a blade arm, a main blade, a turbulence bar, and a wear-resistant protective layer. The turntable body serves as the load-bearing foundation and ensures structural strength through integrated molding technology; The blade arm is arranged obliquely along the circumference, forming a synergistic turbulence effect with the turbulence bar; As the core cutting component, the inclination angle and blade design of the main blade directly affect the cutting efficiency. The latest patented technology uses a split welding structure to separate the spoiler bar from the rotary table body, which not only reduces the casting difficulty, but also realizes the flexible adaptation of “the first mock examination with multiple types”, significantly reducing production costs.
Concentration Adaptability Design of Hydrapulper Rotor
According to the difference in pulp concentration, the pulper rotor structure shows clear differentiation:
- Low consistency pulper rotor (concentration 3%~5%): adopting a wide blade design, focusing on hydraulic circulation efficiency, suitable for ordinary pulp board crushing;
- Medium consistency pulper rotor (concentration 6%~8%): optimizes blade spacing and inclination angle, balances shear force and energy consumption, widely used in conventional waste paper processing;
- High consistency pulper rotor (concentration 10%~18%): using asymmetric blades and stepped shear surfaces, enhancing the dissociation effect through fiber friction, reducing unit energy consumption by more than 22% compared to low concentration systems, has become the mainstream configuration of recycled paper production lines.
