Screening system with vibration-node-arranged vibration systems

A screening system for screening material, the system comprising:

• a screen box comprising two side walls;
• at least two vibration systems arranged on each of the two side walls and configured to excite vibration, wherein the two side walls each have at least two vibration nodes in accordance with a bending mode;
• crossmembers connecting the two side walls;
• at least one screen deck disposed on the crossmembers;
• wherein each of the vibration systems on each of the side walls are respectively disposed in a region of one of the at least two vibration nodes of a respective side wall.

A method for screening material to be screened, in particular for screening mineral rock, by means of a screening system comprising a screen box comprising two side walls, at least two vibration systems arranged on each of the two side walls and configured to excite vibration, wherein the two side walls each have at least two vibration nodes in accordance with a bending mode, crossmembers connecting the two side walls, at least one screen deck disposed on the crossmembers, wherein each of the vibration systems on each of the side walls are respectively disposed in a region of one of the at least two vibration nodes of a respective side wall, wherein the method comprises:

• starting the vibration systems;
• defining a vibration angle for material to be screened by means of a control system of the screening system, for which purpose a phase offset of each vibration system is adjusted electronically;
• and
• adapting, when required, the vibration angle for material to be screened by means of the control system, for which purpose the phase offset of each vibration system is adapted electronically.