Abstract: There are many problems on the first-generation air cushion belt conveyor which influences its operation effect. The innovative improvement of the design theory, design method, construction of air box, section shape, throttle orifice location mode, air source matching and air supply device were accomplished, so the second-generation air cushion belt conveyor was launched. The problems of the first generation product were solved, and a reference for application of air cushion belt conveyor in power plant coal handling system was offered.

Key words: air cushion belt conveyor, water waveform mode air flow, quadratic groove angle, five points located throttle orifice, air flow dispatching device