METHOD FOR RESONANCE EXCITATION OF THE SCREEN SIEVING MESH AND A RESONANCE SCREEN FOR CARRYING OUT SAID METHOD

摘要

The invention relates to a material separation method, substantially by means of screens, and can be used in the coal, metal mining, building ant other industries. The inventive method for resonance excitation of the screen sieving mesh involves statically tensioning the sieving mesh and exposing it to frequency vibration action. The static tension of the sieving mesh is stabilised in relation to the opposite displacements of the sides thereof and the vibration action is substantially performed in the plane of the sieving mesh transversally to the above-mentioned sides thereof. The inventive resonance screen comprises a bed connected to a frame, to which the sieving mesh is attached with the longitudinal sides thereof, and at least one vibrator. The frame is designed in the form of elements which are not linked to each other and are arranged on the opposite sides of the mesh, at least one of said elements being connected to the bed by means of at least one stabilising device in the form of an elastic element located in the plane of the mesh and being provided with a vibrator.