It is a better in separation, simple in structure, easy in operation and maintenance and small in the floor space. Type GF is used for separating varous emulsion, especially for liquid-liquid separation with slight gravity difference and liquid-liquid-solid separation with a little foreign matter. Type GQ is used for separation of various suspension which is diffcult to be separated especially for separation of solid-liquid suspension which has low concentration, high viscosity, small granularity and very small difference of solid-liquid gravity.