Mining low-energy-consumption vibrating screen

The mining low-energy-consumption vibrating screen comprises a supporting frame and a screen box, a motor is installed on the supporting frame, the screen box comprises a box body, a screen mesh and a vibration exciter, the motor and the vibration exciter are connected through a flexible coupler, the motor has n-stage rotating speed, the vibrating screen comprises a detection channel and a stone flow prediction device, and the total volume of the detection channel is V. The stone flow prediction device comprises a controller, a length detector, a width detector and a height detector, n levels of measurement intervals are preset in the controller, and the length detector, the width detector and the height detector transmit the numerical values of the length a, the width b and the height h of stone in the detection channel to the controller; the controller calculates an estimated volume v which is larger than or equal to the volume of the stone, namely v = abh, the controller can judge that the measurement inte