The candle filter device is a highly efficient and precise solid-liquid separation equipment. Its core consists of multiple vertically arranged filter candles, with the surface covered by a filter medium. During operation, the liquid passes through the filter layer from the outside to the inside, and impurities are retained to form a filter cake. This enables closed filtration, dry residue discharge, and filter element regeneration. This device is widely used in clarification, impurity removal, and recovery processes in industries such as chemical engineering, pharmaceuticals, and food. It features high filtration accuracy, automated operation, and low operating costs.