Analysis And Design Of Small Hydraulic Pulper Rotor Structure

The hydraulic pulp machine is the traditional pulp equipment in paper industry. The hydraulic crushing machine mainly through the mechanical effect and the rotor rotation of the hydraulic shear force to complete the waste paper, damage paper and pulp board and other pulp raw materials of the broken solution. At the same time, the traditional method of paper cannot meet the high level of the information carrier of secret destruction. Combined with hydraulic pulper and high requirement on paper destroyed, the waterpower pulp machine for destroying information carrier, thus thoroughly the highly classified document destruction. At present, domestic and foreign existing large waterpower pulp machine in use, in pulping performance good, but not suitable for use in a small range of office space, the rotor is one of the key components of the pulper, its structure directly affect the energy consumption of the pulper and pulping effect. The purpose of this thesis is to study the rotor structure of large scale hydraulic mill as the research object and do the following work.(1) The theoretical basis of the fluid simulation of the rotor structure of the hydraulic broken rotor is analyzed. According to the applicable range of the three k—s models, the corresponding turbulence k—s model is selected..(2) Three large hydraulic pulper rotor structure of3D model is established in SolidWorks, and imported into gambit software, the corresponding fluid modeling, fluid and rotor structure grid division and fluid with the rotor structure of the boundary and medium type definition; the three large waterpower pulp machine rotor structure and corresponding fluid structure into FLUENT software, according to the different working model choice corresponding solver, define the turbulence model, set parameter solution of iterative computation.(3) Analysis of fluid simulation results, obtained the different rotor structure under different conditions of static pressure distribution changes, the analysis and comparison of the different conditions of rotor broken energy consumption of pulp, pulping efficiency and stress conditions.(4) Through analysis of the simulation results comparison, select each broken slurry rotor better condition, change three large hydraulic pulp rotor structure, the fluid simulation, draw the influence of the shape of the rotor structure of crushing energy consumption of pulp, pulping efficiency and stress conditions.(5) Analysis of the fluid simulation results, combined with actual use of concentration range, the reference related literature in the rotor design theory, suitable for low and moderate concentrations of small hydraulic pulp machine rotor structure was designed and fluid simulation, and large hydraulic pulp machine rotor structure of the pulping efficiency compared to verify rationality of small hydraulic pulp machine rotor structure design, small hydraulic pulper rotor design provides the basis.