Release of accumulated dust from the rigid candle filter surface has been extensively studied both theoretically and experimentally, especially for the case of pulse jet type cleaning. However, it is still unclear which is the most effective parameter to the release of accumulated dust. In this study, behaviors of released dust and pressure inside and outside the filter element were observed very precisely. Based on the observation, a simple model correlating between momentum acting on released dust, pressure and, shear and tensile stresses has been proposed. Then its validity was discussed by comparing calculated and experimental results.