Abstract: In order to observe the flow morphology and regularity of the slurry within filter chamber and ultimately improve the filtration efficiency，3D geometry model of filter chamber was built.By adopting center feeding，Computational Fluid Dynamics（CFD) method was used to simulate the filtration process within the filter chamber of chamber filter press.Solid volume fraction increasing law，velocity distribution cloud images，velocity vector images，filter cakes formation law and pressure distribution cloud images within the filter chamber were obtained with the established model through the fluid simulation software Fluent.Under every entrance velocity，analysis of the solid volume fraction growth rate of different particle size within the filter chamber was analyzed，and combined with the pressure size distribution within the filter chamber at different entrance velocities；the appropriate entrance velocity was selected under higher filtration efficiency.By analyzing the velocity distribution cloud images and velocity vector images，the fluid flow state in the filter chamber and the impact on the filtration rate were obtained.By analyzing the formation and development laws of filter cakes，reference on better guide the practical work and improve the filtration efficiency of the filter press was provided.

Key words: Chamber filter press, Numerical simulation, Flow morphology, Solid-liquid flow