The coupler is one of conveyor components
. The operating principle of fluid coupling is as follows:
A certain amount of working liquid is injected into the working chamber of coupler. The pump impeller gets mechanical energy and then convert it to hydraulic energy. The hydraulic energy drives turbine to rotate, during which hydraulic energy changes into mechanical energy and the energy is output through output shaft. The machine is driven by constantly changing energy, realizing the energy transfer from prime mover to working machine back and forth.