Multiple frequency oscilating screen

The utility model discloses a multiple-frequency vibration screen which belongs to a sieving machine. A straining box is arranged on a base through a rubber damping spring, and the straining box is dragged by three motors. One high-frequency motor and two low-frequency motors are respectively connected with a high-frequency inertial exciter and a low-frequency inertial exciter by flexible shaft couplings, and the high-frequency inertial exciter and the low-frequency inertial exciter both adopt external eccentric structure. A lateral plate of the straining box is bent by a monoblock steel plate, and each position is spliced by high-intensity screw bolts. The utility model has the advantages of high integral intensity, rigidity and service life, compact structure of a drive component, convenient maintenance, adjustment vibration amplitude, stable and reliable operation, low noise, large treating capacity and high sieving efficiency.