Separation of solids and fluid is completed within the drum. Its principle is high-speed rotating drum drive inner mud rotate speedily then the mud is thrown onto drum’s surface to make a fluid circle. Under the centrifugal force, solid sedimentary force in the separated liquid will be several hundred even thousands of times heavier than its own gravity so as to separate the solids from the suspension quickly. The ratio of centrifugal force which the solids have gained and the solid’s gravity is called as separating factor. The larger the centrifugal force, the finer the separated solids, so three types of centrifuge can get according to separating factor. Hydraulic Coupler Operation Principle Hydraulic coupler mounted on main motor, it is a hydrodynamic transmission device, have the function of buffering starting shock, reduce starting current and overload protection . It consists of shell, turbine, pump wheel, input shaft, output pulley; shell is joined with turbine, ou